Radio Valve Data: 1915-1960

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Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.

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Help information: Abbreviations - Explanations - Notes.

Post-1925 amplifying valves, frequency changers and signal diodes
Type	Description	Filament		Anode		Auxillary Grid		Grid	r_a	g_m/g_o	R_L	P_o	R_k	Base^{(1)Pin-out details for non-exhibits can be found with the base details.}		Year
		Volts	Amps	Volts	mA	Volts	mA	-V	kΩ	mA/V	kΩ	Watts	Ω	Type	Ref
Mazda
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
1C1 (IR5)	Heptode FC	1.4*	50mA	90	1.6	67.5	3.2	0	600.0	0.30⅄				B7G	3
1C2 (1AC6)	Heptode FC	1.4*	50mA	mix85 osc80	0.7 1.6	60.0	0.15	0	650.0	0.325⅄				B7G	54
1C3 (1AB6)	Heptode FC	1.4*	50mA	mix85 osc35	0.6 1.5	68	0.8	0	800.0	0.3⅄				B7G	54
1D13	Single diode	1.4	0.15	300	0.5	-	-	-	-	-				B7G	13
1F1	VM RF pentode	1.4*	25mA	85	1.65	64	0.55	0	1MΩ	0.85				B7G	64
1F2 1L4	RF pentode	1.4*	50mA	90	2.9	67.5	1.2	0	600.0	0.92				B7G	2
1F3 1T4	VM RF pentode	1.4*	50mA	90	3.5	67.5	1.4	0	500.0	0.90				B7G	2
1FD1	Diode & AF pentode	1.4*	25mA	67.5	0.17	67.5	55μa	1.5		0.17				B7G	65
1FD9 1S5	Diode & AF pentode	1.4*	50mA	90	2.7	9	0.63	0	500.0	0.72				B7G	5
1P1	Output pentode	1.4*	50mA	85	5.0	85	0.9	5.2	150.0	1.40	13.0	0.2		B7G	9
1P10 3S4	Output pentode	1.4*	0.1	90	7.4	67.5	1.4	7.0	100.0	1.58	8.0	0.27		B7G	6
1P11 3V4	Output pentode	1.4*	0.1	90	9.5	90	2.1	4.5	100.0	2.15	10.0	0.27		B7G	9
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
6/30L2	GP double triode	6.3	0.30	200	10.0	-	-	7.7	5.3	3.40				B9A	39
6BW7	VHF pentode	6.3	0.30	180	9.5	180	3.5	600.0		9.3				B9A	10
6C9	Triode heptode FC	6.3	0.45	mix250 osc80	3.0 5.0	100	6.0	2.5	650.0	0.65⅄				B8A	3
6C10	Triode hexode FC	6.3	0.23	mix250 osc250	3.0 4.8	85.0	3.0	2.0		0.75⅄			180	B8A	3
6C12	Triode heptode FC	6.3	0.30	mix250 osc250	3.25 4.5	103	6.7	2.0		0.775⅄			140	B9A	24
6C18	VHF frame grid triode VM pentode FC	6.3	0.35	mix155 osc77	7.8 7.8	135	2.4	3.0	400.0	4.7				B9A	72
6C31	Triode heptode FC	6.3	0.85	mix250 osc80	3.0 5.0	100	6.05	3.0	1.6MΩ	0.75 ⅄				IO	3
6D1	Signal diode	6.3	0.15	125	5.0	-	-	-	-	-				B3G	1
6D2	Double diode	6.3	0.30	175	9.0	-	-	-	-	-				B7G	18
6D3	Slow heating diode	6.3	0.30		5.0	-	-	-	-	-				B7G	50
6F1	RF pentode	6.3	0.35	200	10.0	200	2.6	1.8	900.0	9.0				B8A	17
6F11	RF pentode	6.3	0.20	250	4.4	100	1.35	1.8	2.8MΩ	2.2				B8A	8
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
6F12	RF pentode	6.3	0.30	250	10.0	250	2.5	2.0	1MΩ	7.50				B7G	21
6F13	RF pentode	6.3	0.35	200	10.0	200	2.6	1.	900.0	9.00				B8A	8
6F14	Video output pentode	6.3	0.35	135	27.0	135	6.5	1.3		10.6				B8A	8
6F15	VM RF pentode	6.3	0.20	250	7.0	100	2.0	2.5	1.7MΩ	2.3				B8A	8
6F16	VM RF pentode	6.3	0.20	250	6.0	100	1.7	2.5	1MΩ	2.2				B8A	18
6F18	VM RF pentode	6.3	0.20	175	12.0	100	3.5	1.3	400.0	4.4				B9A	10
6F19	VM RF pentode	6.3	0.30	250	10.0	100	2.5	2.0	500.0	6.0				B9A	10
6F20	VM RF pentode	6.3	0.30	170	10.0	170	2.5	2.0	400.0	6.0				B9A	10
6F21	VM RF pentode	6.3	0.20	250	7.8	250	2.0	2.5	1.2MΩ	4.7				B7G	21
6F22	RF pentode	6.3	0.20	250	3.0	140	0.55	2.0	2MΩ	1.85				B9A	23
6F23/EF812	RF pentode	6.3	0.30	170	10.0	170	2.6	1.9		9.2			150	B9A	10
6F24/EF814	Frame grid RF pentode	6.3	0.30	170	10.0	170	2.7	1.9		9.2			150	B9A	10
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
6F25	Frame grid VM RF pentode	6.3	0.30	170	11.5	90	2.8	1.5		12.5			100	B9A	10
6F26	VM RF pentode	6.3	0.30	250	10.0	100	2.5	2.0	500.0	6.0				B9A	10
6F28	Frame grid beam tetrode video output	6.3	0.30	180	10.0	180	2.5	2.9	310.0	12.5				B9A	80
6F29	Frame grid VM RF pentode	6.3	0.30	200	12.0	90	4.5	2.0	500.0	9.5			120	B9A	10
6F30	Frame grid VM RF pentode	6.3	0.30	200	10.0	200	4.1	2.5	380.0	15.0			180	B9A	10
6F32	RF pentode	6.3	0.63	200	5.1	200	3.45	4.5		3.0				MO+tc	11
6F33	RF pentode	6.3	0.35	200	5.75	200	3.1	4.0		3.55				B7G	21
6FD12	Double Diode VM RF pentode	6.30	0.30	250	9.0	100	2.7	2.0	1MΩ	5.2				B9A	12
6H1	Hexode	6.3	0.20	250	2.3	100	2.7	2.2	1MΩ	0.56⅄				B7G	76
6L1	GP double triode for TV	6.3	0.40	250	10.0	-	-	11.5	6.2	2.8				B8A	13
6L12	VHF double power triode	6.3	0.435	250	10.0	-	-	2.3	9.7	5.9				B9A	39
6L13	Double triode	6.3	0.30	250	1.2	-	-		62.5	1.6				B9A	1
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
6L18	RF oscillator triode	6.3	0.30	250	12.0	-	-	13.3	3.0	4.8				B8A	6
6L19	AF double triode	6.3	0.40	250	4.0	-	-	3.1	20.0	2.75				B8A	13
6L34	VHF triode	6.3	0.30	250	10.0	-	-	1.5	10.5	8.5				B7G	24
6LD3	Double diode triode	6.3	0.23	100	0.8	-	-	0.7	54.0	1.4				B8A	9
6LD12	Triple diode triode	6.3	0.45	100	0.8	-	-	1.0	48.0	1.45				B9A	2
6LD13	Double diode triode	6.3	0.20	100	0.8	-	-	0.70	54.0	1.4				B9A	54
6LD20	Double diode triode	6.3	0.25	250	5.0	-	-	5.9	13.5	2.3				B8A	9
6P1	Output beam tetrode	6.3	0.80	250	40.0	250	7.5	8.5	40.0	8.8	5.0	4.2	180	IO	36
6P15	Output pentode	6.3	0.76	250	48.0	250	5.5	7.3	38.0	11.3	4.0	5.4	135	B9A	16
6P17	Output pentode	6.3	0.20	250	16.0	250	2.4	13.5		2.6	16.0	1.4		B7G	77
6P25	Output beam tetrode	6.3	1.10	258	40.0	250	8.0	8.5	40.0	8.8	5.0	4.5	180	IO	36
6P26	Output beam tetrode	6.3	0.60	250	40.0	250		8.5		8.8				IO	36
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
6P28	Line o/p beam tetrode	6.3	1.10	350	35.0	250	7.0	16.0		9.5			100	IO+tc	38
6PL12	Triode & output beam tetrode Audio or field o/p	6.3	0.78	bt200 t100	35.0 3.5	200 -	7.0 -	16.0 0		6.4 2.5	5.6	3.5	390	B9A	37
10C1	Triode heptode FC	28.0	0.10	mix175 osc80	3.0 5.0	100	6.0	2.5	2.2MΩ	0.65⅄				B8A	3	1947
10C2	VHF triode pentode FC	28.0	0.10	mix150 osc80	4.7 5.0	150	1.3	0		2.1⅄				B8A	19
10C14	Triode heptode FC	19.0	0.10	mix200 osc100	3.7 4.5	119	8.1	2.6	1MΩ	0.78⅄				B9A	24
10D2	Signal double diode	19.0	0.10	175	9.0	-	-	-	-	-				B7G	18
10F1	RF pentode	22.0	0.10	200	20.0	200	2.6	1.8	900.0	9.0				B8A	17
10F3	RF pentode	22.0	0.10	200	6.0	200	1.6	2.35		6.5				B8A	8
10F9	VM RF pentode	13.0	0.10	175	7.0	100	2.0	2.5	1MΩ	2.3				B8A	8
10F18	VM RF pentode	13.0	0.10	175	12.0	100	3.5	1.3	400.0	4.4				B9A	10
10FD12	Double diode VM RF pentode	19.0	0.10	175	12.0	100	3.5	1.3	400.0	4.4				B9A	12
10L1	VHF grounded grid triode	19.0	0.10	250	10.0	-	-	1.5	10.5	8.5				B7G	24
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
10L14	VHF double triode	26.0	0.10	100	8.7	-	-	1.4	8.4	6.0	1.5			B9A	39
10LD3	Double diode triode	14.0	0.10	100	0.8	-	-	0.7	54.0	1.4				B8A	9
10LD11	Double diode triode	15.0	0.10	250	5.0	-	-	5.9	13.52.3					B8A	9	1947
10LD12	Triple diode triode	28.0	0.10	200	1.0	-	-	2.3	50.0	1.4				B9A	2
10LD13	Double diode triode	13.0	0.1	100	0.8	-	-	0.7	54.0	1.4				B9A	54
10P13	Output beam tetrode	40.0	0.10	180	29.0	150	5.8	6.3		7.4	5.4	2.6		B8A	7
10P14	Output beam tetrode	40.0	0.10	165	42.0	175	10.5	9.4		7.2	3.5	3.4		IO	36	1947
10P18	Output pentode	45.0	0.10	160	70.0	170	5.0	12.5	23.0	10.0	2.2	5.2		B9A	16
10PL12	Triode & output beam tetrode	50.0	0.1	bt200 t100	35.0 3.5	200	7.0	16.0 0		6.4 2.5	5.6	3.5	300	B9A	37
11A1	Power triode for stabilized supplies	63.	0.95	600 max		-	-							B9A	62
12E1	Beam tetrode for stabilized supplies	6.3	1.60	800 max		300 max								IO+tc	38
12E13	Power triode (Push-pull)	6.3	1.8	425	90.0 per valve	-	-						525 per valve	IO	36
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
13E1	Beam tetrode for stabilized supplies	13.0	2.6	800 Max		300 max					4.0			B7A	2
20D1	Double diode	9.5	0.20	175	9.0	-	-	-	-	-				B7G	18
20F2	RF pentode	11.0	0.20	135	27.0	135	6.5	1.3		10.6				B8A	8
20L1	AF double triode	12.6	0.20	200	10.0	-	-	8.5	5.7	2.8				B8A	13
20P1	Line o/p beam tetrode	38.0	0.20	400		250								IO+tc	38
20P3	Output beam tetrode	20.0	0.20	195	51.0	210	12.7	11.5		7.4	3.7	4.5	180	IO	36
20P4	Line o/p beam tetrode	38.0	0.20	400		250								IO+tc	38
20P5	Output beam tetrode	20.0	0.20	180	29.0	150	5.8	6.3		7.5	5.4	2.6	180	B8A	7
30C1	VHF triode pentode FC	9.0	0.30	pen170 t120	6.8 6.0	145	2.0			2.0⅄				B9A	25
30C15	VHF triode pentode FC	9.0	0.30	pen200 t120	7.6 6.0	138	2.3			3.3⅄				B9A	42
30C17	Frame grid triode & VM pentode FC	7.4	0.30	pen160 t77	7.3 7.0	150	1.8			4.8⅄ 5.5				B9A	42
30C18	Frame grid triode & VM pentode FC	7.4	0.30	pen155 t60	7.8 7.8	135	2.4			4.7⅄ 4.9				B9A	72
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
30F5	RF pentode	7.3	0.30	170	10.0	170	2.6	1.9		8.8				B9A	10
30F27	VHF VM tetrode	3.7	0.30	170	13.5	140	1.7	1.25		15.0				B9A	61
30FL1	Triode beam tetrode	9.4	0.30	bt170 t200	10.0 10.0	170		2.1 7.7		8.0 3.4				B9A	49
30FL12	Triode frame grid tetrode, video output	10.0	0.30	tet180 t150	10.0 10.0	180		2.9 4.9		12.5 3.7				B9A	79
30FL14	Triode pentode RF amp & scanning oscillator	7.4	0.30	Pen t100	12.0 14.0	160	4.0	1.7 3.0	3.1	14.5 5.5				B9A	78
30L1	VHF double triode, cascode amplifier	7.0	0.30	90	12.0	-	-	1.5		6.0				B9A	28
30L15	VHF double triode, VM cascode amplifier	7.0	0.30	90	15.0	-	-	1.2		90				B9A	28
30L17	Frame grid VHF double triode, VM cascode amplifier	7.2	0.30	75	15.0	-	-	0.75		16.5				B9A	87
30P4	Line o/p beam tetrode, video or sync separator	25.0	0.30	230		200								IO+tc	129
30P4MR	Line o/p beam tetrode	25.0	0.30	400		250								IO+tc	129
30P12	Output beam tetrode	12.6	0.10	170	31.0	180	7.3	10.3			5.0	2.25		B9A	16
30P14	Output beam tetrode	16.0	0.30	170	50.0	170	3.0	15.0		7.6				B9A	37
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
30P16	Output pentode, audio or field output	16.5	0.30	200	45.0	200	8.5	14.4	24.0	7.6	4.0	4.2		B9A	16
30P18	Field output pentode	15.0	0.30	160	70.0	170	5.0	12.5	23.0	10.0	2.2	5.2		B9A	16
30P19	Line o/p beam tetrode	25.0	0.30	250 max		250 max								IO+tc	129
30PL1	Triode & beam tetrode audio or field output	13.0	0.30	bt180 t200	28.0 10.0	190	6.5	7.7 10.3		3.4	6.2	2.2	270	B9A	27
30PL12	Triode & output beam tetrode	16.0	0.30	bt200 t100	35.0 3.5	200	7.0	16.0 0	28.0	6.4 2.5	5.6	3.5	380	B9A	37
30PL13	Triode & beam tetrode field output	16.0	0.30	bt170 t100	45.0 10.0	170		13.0 2.2		7.5 4.3				B9A	37
30PL14	Triode & beam tetrode field output	16.0	0.30	bt170 t100	50.0 10.0	170		14.5 2.2		7.3 4.4				B9A	37
30PL15	Triode & beam tetrode field output	16.0	0.30	bt170 t100	50.0 10.0	170		14.5 2.2		7.3 4.4				B9A	66
215SG	RF tetrode	2.0*	0.15	150	2.6	60		0	270.0	1.10				B4+tc	2	1929
230Pen	Output pentode	2.0*	0.30	150	8.0	125	2.0	9.0		1.50		0.35		B4+st	26	1929
425Pen	Output pentode	4.0*	0.25	150	18.0	150	5.0	12.0		2.00		0.75		B4+st	26	1929
A40	Acorn UHF triode	4.0	0.25	100		-	-			2.00				5AA	1	1939
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
A41	Acorn UHF pentode	4.0	0.25	250		100				2.00				7AA	1	1939
AC/2HL	Detector or AF triode	4.0	1.00	200	3.6	-	-	2.0	11.5	6.50				B5	1	1932
AC/2Pen	Output pentode	4.0	1.75	250	32.0	250	6.0	5.3	110.0	8.50	6.7	3.5	140	B7	24	1933
AC/2Pen DD	Double diode output pentode	4.0	2.00	250	32.0	250	6.0	5.3	110.0	8.50	6.7	3.5	140	B7+tc	9	1934
AC3/Pen	Output Pentode	4.0	1.75	250		250				9.00				B7	24	1936
AC6/Pen	Line t/b beam tetrode	4.0	1.75	310	63.0	210	14.0	6.9		8.50			90	B7	36	1938
AC/4Pen	Output beam tetrode	4.0	1.75	250	64.0	250	13.0	8.8	20.0	11.00	3.4	7.0	115	B7	24	1937
AC/5 Pen	Output beam tetrode	4.0	1.75	250	40.0	250	7.5	8.5		9.40	5.2	4.85	180	B7	24	1938
AC/5 Pen DD	Double diode output beam tetrode	4.0	2.00	250	40.0	250	7.5	8.5		9.40	5.2	4.85	180	B7+tc	9	1938
AC/DD	Double diode	4.0	1.00			-	-							B5	3	1932
AC/HL	Detector or AF triode	4.0	1.00	200 200	6.0 3.7	-	-	3.0 4.0	13.5 11.7	2.60 3.00				C5 B5	1 1	1929 1929
AC/HL DD	Double diode triode	4.0	1.00	200	4.3	-	-	3.0	13.8	2.60				B7+tc	7	1933
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
AC/HL DDD	Triple diode triode	4.0	1.00	200	4.9	-	-	3.0	13.0	2.70				B9+tc	5	1934
AC/P	Output triode	4.0	1.00	200	20.0	-	-	12.0	2.65	3.75	6.1	0.65		C5 B5	1 1	1929
AC/P1	Output triode	4.0	1.00	200 200	16.0 24.0	-	-	30.0 28.0	2.0 2.2	2.50 2.30	5.0	1.0 1.0	1150	B5	1	1929 1934
AC/P4	Output triode (for line & frame timebases)	4.0	1.00	700		-	-			7.00				B5+tc	9	1937
AC/Pen	Output pentode	4.0	1.00	250 250	30.0 32.0	200 250	5.0 6.0	10.0 15.5	75.0	2.50 2.70	8.0 7.5	1.9 3.3	410	B5+st B7	Q 24	1930 1933
AC/S1 VM	VM RF tetrode	4.0	1.00	200	4.5	75	0.8	1.5	700.0	1.10				B5+tc	2	1932
AC/S2	RF tetrode	4.0	1.00	200	6.2	80		0	600.0	5.00				B5+tc	2	1931
AC/S2 Pen	RF pentode for FC	4.0	1.00	250	6.5	100	2.2		1.5M	5.50				B7+tc	5	1933
AC/SG	RF tetrode	4.0	1.00	200 200	4.2 4.5	75 60	0.8	0 0	400.0 895.0	3.00				B5+tc	2	1929 1932
AC/SG VM	VM RF tetrode	4.0	1.00	200	5.0	60	0.9	2.0	700.0	2.00				B5+tc	2	1932
AC/SP1	RF pentode	4.0	1.00	200	4.9	200	4.1	3.0	120.0	2.65				B7+tc	5	1936
AC/SP3	RF pentode for TV & HF	4.0	1.00	250	7.9	100	2.5	1.7	550.0	7.00				B7+tc	6	1937
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
AC/TH1	Triode heptode FC	4.0	1.30	h250 t80	3.0 4.0	100	6.0	3.0	1.6M 3.0	0.75⅄ 5.3				B7+tc	3	1936
AC/TH1A	Triode heptode FC (forerunner of TH41)	4.0	1.30	h250 t80	3.0 4.5	100	6.0	3.0	1.6M 3.0	0.75⅄ 5.3				MO	12	1938
AC/TP	Triode pentode FC	4.0	1.25	p250 t200	6.5 1.5	200	2.5	5.0	900.0 21.5	0.70⅄ 1.40				B9+tc	3	1934
AC/VP1	VM RF pentode	4.0	0.65	250	8.8	250	2.2	4.0	1M	2.00				B5 B7+tc	2 5	1934 1934
AC/VP2	VM RF pentode	4.0	0.65	250	7.4	200	1.85	2.8	1M	2.00				B7+tc	6	1936
D1	Television diode	4.0	0.20	125	5.0	-	-							B3G	1	1937
DC/2HL DD	Double diode triode	25.0	0.10	200		-	-		15.0	2.00				B7+tc	7	1933
DC/2P	Output triode	35.0	0.10	200	17.0	-	-	13.5	2.2	4.50	6.0	0.65		B5	1	1931
DC/2Pen	Output pentode	35.0	0.10	250	30.0	200	5.0	10.0		2.50	10.0	2.3		B5+st B7	16 24	1931
DC/2SG	RF tetrode	20.0	0.10	200 200	4.25 7.3	60 60	1.5	1.5	800.0 510.0	1.50 1.80				B5+tc	2	1932 1933
DC/2SG VM	VM RF tetrode	20.0	0.10	200	5.0	60	0.9	1.5	830.0	1.50				B5+tc	2	1932
DC/3HL	Detector or AF triode	25.0	0.10	200	5.0	-	-	3.5	11.7	3.00				B5	1	1931
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
DC/HL	Detector or AF triode	6.0	0.50	200	5.6	-	-	3.0	13.0	2.70				B5	1	1931
DC/P	Output triode	8.0	0.50	200	16.0	-	-	14.0	2.2	4.50	6.0	0.65		B5	1	1931
DC/Pen	Output pentode	8.0	0.50	250	30.0	200	5.0	10.0		3.50	10.0	2.0		B5+st	2	1931
DC/SG	RF tetrode	6.0	0.50	200 200	4.5 3.5	80 60	0.7	0	363.0 810.0	2.75 1.80				B5+c	2	1931 1933
DD41	Double diode	4.0	0.50	175	5.0	-	-							MO	13	1938
DD101	Double diode	10.0	0.20			-	-							MO	13	1938
DD207	Double diode	2.0*	0.075		2.0	-	-							B4+tc	5	1937
DD620	Double diode	6.0	0.20		1.0	-	-							B5	3	1934
FC141	Heptode FC	1.4*	0.05	mix82 osc75	0.55 1.2	45	0.6	0	600.0	0.25⅄				MO+tc	5	1939
GP210	General-purpose triode	2.0*	0.10	120		-	-		14.0	0.90				B4	1	1928
GP407	General-purpose triode	4.0*	0.07	120		-	-		14.0	1.00				B4	1	1928
GP607	General-purpose triode	6.0*	0.07			-	-		12.5	1.00				B4	1	1928
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
H2	General-purpose triode	2.0*	0.10	150	0.8	-	-	1.5	45.0	1.10				B4	1	1932
H141D	Single diode AF triode	1.4*	0.05	90	0.1	-	-	0.6	260.0	0.25				MO+tc	6	1939
H210	General-purpose triode	2.0*	0.10	150	2.0	-	-	0	59.0	0.80				B4	1	1929
H607	RF or RCC triode	6.0*	0.07	150	1.2	-	-	0	90.0	0.45				B4	1	1929
H610	RF or RCC triode	6.0*	0.10	150	1.6	-	-	0	66.0	0.60				B4	1	1930
HF210	General-purpose triode	2.0*	0.10	150		-	-		28.0	0.70				B4	1	1928
HF407	General-purpose triode	4.0*	0.07	150		-	-		21.0	0.85				B4	1	1928
HF607	General-purpose triode	6.0*	0.07	150		-	-		20.0	1.00				B4	1	1928
HL2	General-purpose triode	2.0*	0.10	150	2.0	-	-	2.0	24.0	1.35				B4	1	1931
HL21/DD	Double diode triode	2.0*	0.15	150	2.0	-	-	2.0	25.0	1.30				B5+tc	5	1934
HL22	General-purpose triode	2.0*	0.10	150	2.0	-	-	2.0	25.0	1.30				MO	2	1938
HL22/DD	Double diode triode	2.0*	0.10	150	2.0	-	-	2.0	25.0	1.30				MO+tc	7	1938
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
HL23	General-purpose triode	2.0*	0.05	150	1.5	-	-	2.4	27.0	1.20				MO	2	1938
HL23/DD	Double diode triode	2.0*	0.05	150	1.5	-	-	2.8	24.0	1.05				MO+tc	7	1938
HL41	Oscillator or RCC triode	4.0	0.65	250	7.0	-	-	4.5	11.5	3.10				MO	16	1938
HL41/DD	Double diode triode	4.0	0.65	250	6.0	-	-	5.2	13.5	2.20				MO+tc	10	1938
HL42/DD	Double diode VM triode	4.0	0.65	65	2.8	-	-	1.25	12.5	1.85				MO+tc	10	1939
HL133	AF triode	13.0	0.20	200	6.0	-	-	3.3	12.5	3.40				MO+tc	19	1938
HL133/DD	Double diode triode	13.0	0.20	250	6.0	-	-	5.4	14.0	2.50				MO+tc	10	1938
HL134/DD	Double diode triode	13.00	0.20	250	6.0	-	-	5.4	14.0	2.30				MO+tc	10
HL210	General-purpose triode	2.0*	0.10	150	1.7	-	-	3.0	18.5	1.40				B4	1	1929
HL607	General-purpose triode	6.0*	0.07	150	1.6	-	-	3.0	20.0	1.00				B4	1	1929
HL610	General-purpose triode	6.0*	0.10	150	1.4	-	-	3.0	20.0	1.10				B4	1	1930
HL1320	Detector or AF triode	13.0	0.20	250	6.0	-	-	3.3	10.0	3.00				B7+tc	23	1934
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
HL/DD1320	Double diode triode	13.0	0.20	200	4.3	-	-	3.0	16.0	1.90				B7+tc	7	1934
L2	Detector or AF triode	2.0*	0.10	150	4.0	-	-	4.0	12.5	1.50				B4	1	1931
L2/DD	Double diode triode	2.0*	0.10	150	1.9	-	-	6.0	10.0	1.60				B5+tc	5	1933
L21/DD	Double diode triode	2.0*	0.15	150	4.0	-	-	4.2	12.0	1.55				B5+tc	5	1934
L22/DD	Double diode triode	2.0*	0.10	150	4.0	-	-	4.2	12.0	1.55				MO+tc	7	1939
L210	AF triode	2.0*	0.10	150	3.7	-	-	4.5	10.0	1.70				B4	1	1929
LF215	AF triode	2.0*	0.15	120		-	-		7.0	1.00				B4	1	1928
LF407	AF triode	4.0*	0.07	120		-	-		5.7	1.40				B4	1	1928
LF607	AF triode	6.0*	0.07	120		-	-		5.3	2.60				B4	1	1928
P41	Oscillator triode for TV	4.0	0.95	250	16.0	-	-	11.8	3.7	4.5				MO	16	1938
P61	Oscillator triode for TV	6.3	0.60	250	16.0	-	-	11.8	3.7	4.5				MO	16	1941
P215	Output triode	2.0*	0.10	150	5.8	-	-	13.5	6.5	1.10	11.0	0.15		B4	1	1933
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
P220	Output triode	2.0*	0.20	150 150	8.0 5.5	-	-	6.0 7.0	3.7 5.6	3.40 2.20	8.0 10.0	0.14 0.15		B4	1	1929 1934
P220A	Output triode	2.0*	0.20	150	15.0	-	-	14.0	2.4	2.70	4.1	0.35		B4	1	1930
P227	Output triode	2.0*	0.27	120		-	-		2.9	1.40				B4	1	1928
P240	Output triode	2.0*	0.40	150	11.0	-	-	13.5	1.9	3.70	5.6	0.35		B4	1	1929
P415	Output triode	4.0*	0.15	120		-	-		2.9	1.90				B4	1	1928
P425	Output triode	2.0*	0.25	150	13.5	-	-	27.0	1.9	1.80	4.0	0.36		B4	1	1929
P615	Output triode	6.0*	0.15	120		-	-		2.6	2.30				B4	1	1928
P625A	Output triode	6.0*	0.25	200	19.0	-	-	30.0	1.6	2.50	4.7	0.8		B4	1	1929
P625B	Output triode	6.0*	0.25	200	17.0	-	-	17.0	2.5	2.80	5.5	0.55		B4	1	1929
P650	Output triode	6.0*	0.50	200	23.5	-	-	40.0	1.3	2.70	3.5	1.1		B4	1	1929
PA20	Output triode	2.0*	2.00	250 300	50.0 48.0	-	-	27.5 36.0	1.0 1.1	6.50 5.20	2.2 3.0	2.75 4.2	750	B4	1	1936 1939
PA40	Output triode	4.0*	2.00	450	107.0	-	-	96.5	425Ω	4.50	4.0	40.0		B4	1	1937
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
PD220	Class B double triode	2.0*	0.20	150	0.4	-	-	1.15			11.5	2.85		B7	10	1933
PD220A	Class B double triode	2.0*	0.20	150	1.25	-	-	6.0			10.0	2.9		B7	10	1933
Pen24	Output pentode	2.0*	0.30	120	5.0	120	1.0	3.3		4.00	15.0	0.44		MO	3	1938
Pen25	Output pentode	2.0*	0.15	120	5.0	120	1.0	3.6	350.0	3.00	14.0	0.4		MO	3	1938
Pen44	Output beam tetrode (triode connection) (Class AB1 push-pull)	4.0	2.10	260 275 300	70.0 57.0 155.0	270 275	12.0 50.0	11.1 13.6 12.2	1.2	10.6 11.5	3.0 2.4 5.0	8.0 3.2 24.0	134 240 -	MO	20	1939
Pen45 (later 6P25 with IO base)	Output pentode (Triode connection) (Class AB1 push-pull)	4.0	1.75	250 250 250	40.0 35.0 95.0	250 250	8.0 28.0	8.5 9.8 8.5	40.0 1.9	8.80 9.30	5.0 3.5 7.0	4.5 1.7 12.0	180 280 -	MO	20	1938
Pen45/DD	Double diode output pentode	4.0	2.00	250	40.0	250	8.0	8.5	40.0	8.80	5.0	4.5	180	MO+tc	15	1938
Pen46	Line t/b beam tetrode	4.0	1.75	315	63.0	210	14.0	6.9		8.50				MO+tc	14	1940
Pen141	Output pentode	1.4*	0.10	90	5.5	90	1.1	9.0		1.40	10.0	0.24		MO	3	1939
Pen220	Output pentode	2.0*	0.20	150 150	9.0 9.0	150 150	2.0 1.6	4.5 4.5		2.50 2.20	17.0 14.0	0.5 0.6		B4+st B5	21 6	1931 1933
Pen220A	Output pentode	2.0*	0.20	150 150	18.0 18.0	150 150	4.0 3.6	9.0 9.0	270.0	2.50 2.20	7.5 6.0	1.0 1.1		B4+st B5	21 6	1931 933
Pen230	Output pentode	2.0*	0.30	150	10.5	125	2.0	7.5		1.50	10.0	0.35		B4+st	21	1931
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
Pen231	Output pentode	2.0*	0.30	110	4.6	110	0.9	2.2	500.0	5.30	19.0	0.29		B5	6	1936
Pen383	Output beam tetrode	38.0	0.20	160	64.0	175	13.0	10.0		10.50	2.6	3.75	130	MO	20	1938
Pen384	Output beam tetrode	38.0	0.20	110	40.0	110	2.9	7.0		7.80	2.2	1.9	160	MO	20	1946
Pen425	Output pentode	4.0*	0.25	150	18.0	150	4.0	12.0		2.0	7.0	0.80		B4+st	21	1931
Pen453/DD	Double diode output beam tetrode	45.0	0.20	160	64.0	175	13.0	10.0		10.5	2.6	3.75	130	MO+tc	15	1938
Pen1340	Output pentode	13.0	0.40	240	41.0	240	8.0	8.6	80.0	6.40	5.5	3.5	175	B7	24	1935
Pen3520	Output pentode	35.0	0.20	200	40.0	200	8.0	8.0	67.0	7.30	4.4	3.0	165	B7	24	1935
Pen3820	Output beam tetrode	38.0	0.20	160	64.0	175	13.0	10.0		10.5	2.6	3.75	130	B7	24	1938
Pen/DD61†	See AC2/PenDD	6.3	2.00											B7+tc	9
Pen/DD 1360	Double diode output pentode	13.0	0.60	250	32.0	250	6.0	5.3	100.0	8.20	6.7	3.5	140	B7+tc	9	1935
Pen/DD 2530†	See Pen/DD 4020	25.0	0.30											B7+tc	9	1936
Pen/DD 4020	Double diode output pentode	40.0	0.20	240	43.0	250	8.5	7.75		7.80	4.8	3.9	150	B7+tc	9	1935
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
	† Both of these were made for Philco.
Pen/DD 4021	Double diode output pentode	45.0	0.20	160	64.0	175	13.0	10.0		10.5	2.6	3.75	130	B7+tc	9	1937
PP3/250	Output triode	4.0*	1.00	250 300	40.0 48.0	-	-	32.0 37.0	1.0 1.1	6.50 5.20	2.3 3.0	2.5 4.2	770	B4	1	1932 1939
PP3/425	Output triode	7.5*	1.25	425	28.0	-	-	100.0	2.9	1.00	10.4	3.0		B4	1	1929
PP5/400	Output triode	4.0*	2.00	400	63.0	-	-	32.0	1.5	6.00	2.7	5.9		B4	1	1931
PP3521	Output triode	35.0	0.20	200	70.0	-	-	25.0	950Ω	6.30	2.0	2.3	360	B7	16	1935
PX650	Output triode	6.0*	0.50	200		-	-		1750Ω	2.00				B4	1	1928
QP25	Double output pentode	2.0*	0.20	120	2.3	120	9.75				15.5	1.2		MO	9	1939
QP230	Double output pentode	2.0*	0.30	120	2.3	120	0.60	9.6			17.0	0.85		B7	11	1936
QP240	Double output pentode	2.0*	0.40	150	2.0	130.5	0.45	10.3		4.0	15.0	2.25		B9	4	1934
RC210	RCC triode	2.0*	0.10	150		-	-		86.0	0.47				B4	1	1928
RC407	RCC triode	4.0*	0.07	150		-	-		100.0	0.40				B4	1	1928
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
RC607	RCC triode	6.0*	0.07	150		-	-		90.0	0.45				B4	1	1928
S6F12 (SQ)	RF pentode	6.3	0.30											B7G	21
S6F33 (SQ)	RF pentode	6.3	0.35											B7G	21
S11E12 (SQ)	Beam tetrode for stabilized supplies	6.3	1.60											IO	138
S215A	RF tetrode	2.0*	0.15	150	2.0	60	0.30	0	720.0	1.10				B4+tc	2	1931
S215B	RF tetrode	2.0*	0.15	150	1.5	60	0.30	1.0	410.0	1.70				B4+tc	2	1931
S215 VM	VM RF tetrode	2.0*	0.15	150	2.8	60		0	500.0	1.40				B4+tc	2	1932
SG207	RF tetrode	2.0*	0.07	150		80				0.40				B4+tc	2	1929
SG215	RF tetrode	2.0*	0.15	150	1.5	60	0.25	1.5	455.0	1.10				B4+tc	2	1931
SP22	RF pentode	2.0*	0.10	120	1.1	120	0.38	1.0	1.35M	1.20				MO+tc	1	1938
SP41	RF pentode for TV	4.0	0.95	200	10.9	200	2.7	1.5	700.0	8.50				MO+tc	11	1938
SP42	Video output pentode	4.0	0.95	200	20.0	115	5.0	1.25		8.40				MO+tc	11	1938
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
SP61	RF pentode for TV	6.3	0.60	200	10.9	200	2.7	1.5	700	8.50				MO+tc	11	1941
SP62	Video output pentode	6.3	0.60	200	20.0	115	5.0	1.25		8.40				MO+tc	11	1946
SP141	RF pentode	1.4*	0.05	83	1.3	83	0.50	0	600.0	0.75				MO+tc	4	1939
SP181	RF pentode	18.0	0.20	200	10.9	200	2.7	1.5	700.0	8.50				MO+tc	11	1940
SP210	RF pentode	2.0*	0.10	120	1.1	120	0.33	1.0	2M	1.20				B7+tc	4	1936
SP215	RF tetrode	2.0*	0.15	150	2.1	80	0.70	1.5	800.0	1.60				B7+tc	4	1934
SP1320	RF pentode	13.0	0.20	250	4.5	100	0.90		1M	2.50				B7+tc	5	1934
SP2220	RF pentode	22.0	0.20	250	4.9	200	4.1	3.0	120.0	2.65				B7+tc	5	1936
TH41	Triode heptode FC	4.0	1.30	h250 t80	3.0 5.0	100	6.0	3.0	1.6M	0.65⅄				MO+tc	12	1939
TH233	Triode heptode FC	23.0	0.20	h175 t80	2.6 4.5	100	5.6	3.0	1.3M	0.64⅄				MO+tc	12	1939
TH2320	Triode heptode FC	23.0	0.20	h150 t80	3.0 4.5	100	6.0	3.0	1.2M	0.75⅄				B7+tc	3	1936
TH2321	Triode heptode FC	23.0	0.20	h150 t80	3.0 4.5	100	6.0	3.0	1.0M	0.65⅄				B7+tc	3	1938
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
TP22	Triode pentode FC	2.0*	0.25	p150 t150	1.2 0.7	60	0.4	1.5	1.6M 24.0	0.50⅄ 1.40				B9+tc	1	1934
TP23	Triode pentode FC	2.0*	0.25	p120 t80	0.55 2.5	60	0.95	1.5	1.6M	0.25⅄				B7+tc	34	1937
TP25	Triode pentode FC	2.0*	0.20	p120 t80	0.58 2.5	60	0.92	1.5	1.3M	0.26⅄				MO+tc	23	1938
TP26	Triode pentode FC	2.0*	0.20	p103 t65	1.2 0.9	65	0.3	2.0	1.4M	0.55⅄				MO+tc	22	1939
TP1340	Triode pentode FC	13.0	0.40	p250 t200	6.5 1.5	200	2.5	5.0	900.0 21.5	0.7⅄ 1.4				B9+tc	2	1935
TP2620	Triode pentode FC	26.0	0.20	p250 t200	6.5 1.5	200	2.5	5.0	900.0 21.5	0.65⅄ 1.40				B9+tc	2	1934
TS215 (was BTH BTS215)	Det triode & AF triode (Two-Stage)	2.0*	0.15	120 120	7.0	-	-	1.0 6.0	100.0 7.0	0.27 0.90				B4+2st	24	1929
V257 = CV1723	RF pentode	2.0*	0.15	150		150				2.30				MO+tc	1
V312	Low noise AF triode	4.0	0.65	250	6.0	-	-	4.8	13.0	2.30				B5+tc	13	1939
V339 = CV3767	High-μ voltmeter triode	4.0	0.58	250		-	-		43.0	1.70				B7+tc	6
V453	Pentode	4.0	0.65	250	4.5	100	0.8	1.75		2.00				MO+tc	11	PW
V503 = PA40	Output triode (Class AB1 push-pull)	4.0*	2.00	450	110.0	-	-	96.5	0.425	4.50	4.0	40.0		B4	1	1948
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
V872 = CV1116	RF pentode	6.3	0.63	250		250				4.00				MO+tc	11	WW2
V914	Double diode	4.0	0.30		1.0	-	-							B53	3	1934
V1135B = CV345 Became 12E1	Series regulator tetrode	6.3	1.60	150	200.0	150	12.0	9.5		12.50				IO+tc	38	1946
V1505	See STC 4212E													-	-
VP22	VM RF pentode	2.0*	0.10	120	1.2	60	0.32	1.5	1.3M	0.80				MO+tc	1	1938
VP23	VM RF pentode	2.0*	0.05	120	1.45	60	0.5	1.5	1.45M	1.08				MO+tc	1	1938
VP41	VM RF pentode	4.0	0.65	250	7.7	200	2.0	2.7	1.3M	6.50				MO+tc	11	1938
VP133	VM RF pentode	13.0	0.20	150	8.0	150	2.2	2.7	700.0	2.10				MO+tc	11	1938
VP210	VM RF pentode	2.0*	0.10	120	1.8	70	0.63	1.5	890.0	1.40				B7+tc	4	1936
VP215	VM RF tetrode	2.0*	0.15	150	2.5	80	0.8	1.5	800.0	1.25				B7+tc	4	1934
VP1320	VM RF pentode	13.0	0.20	250	5.0	100	1.2	1.7	2M	2.00				B7+tc	5	1934
VP1321	VM RF pentode	13.0	0.20	250	8.8	250	2.2	4.0	1M	3.00				B7+tc	5	1934
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
VP1322	VM RF pentode	13.0	0.20	250	8.8	250	2.2	4.0	1M	3.00				B7+tc	6	1936

Rectifiers
Type	Class	Cathode			Va	DC Ia	PIV	DC Vo	Base		Year
		Type	Volts	Amps	Max RMS	mA	Volts	Volts	Type	Ref	Year
Mazda
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
19E2	EHT	IH	4.0	2.10			4000		IO+tc	156
19G3	EHT	IH	4.0	1.40	2200	375pk	7500		IO+tc	119
19G6	EHT	IH	4.0	0.50	2500	30			B7G+tc	22
19H1	EHT	DH	4.0	2.00	5300	75			B4+tc	6
19H4	EHT	DH	2.5	1.70	7000	30			IO+tc	58
19H5	EHT	IH	4.0	4.00	650o	125	20kV		ESG
CR2	HW	DH	4.0	0.40	250	30			B4	4	1934
DY86/87	EHT	IH	1.4	0.55		0.5	22kV		B9A+tc	50
DY802	EHT	IH	1.4	0.60	20kV	0.5	30kV	20kV	B9A+tc	85
ESU75 (Ediswan)	HW/MV	DH	2.0	8.00	3000	900pk			ES
ESU150 (Ediswan)	HW/MV	DH	4.0	10.00	5000	1800pk			ESG
GY501	EHT	IH	3.15	0.40		1.7	35kV	25kV	B9D+tc	9
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
MU1 (Ediswan)	HW/MV	DH	4.0	2.50	1000	250			B4	4	1934
MU2 (Ediswan)	HW/MV	DH	2.0	3.10	4500	300	12.5kV		B4+tc	6	1935
S19G6 (SQ)	EHT	HW	4.0	0.50	2000	30.0			B7G+tc	78
S19G6/F (SQ)	EHT	HW	4.6	0.50	2000	30			B7G+tc	78
U21	EHT	IH	2.0	1.85	4500	5	12.5kV	5450	B4+tc	17	1937
U22	EHT	IH	2.0	2.00	4500	5	12.5kV	6100	MO+tc	17	1939
U24	EHT	IH	2.0	0.15		0.1	20kV		IO+tc	102	1949
U25	EHT	IH	2.0	0.20		25	19kV	16kV	Wires
U26	EHT	IH	2.0	0.35		0.2	23.5kV		B9A+tc	50
U30/250	HW	DH	4.0	1.00	250	30			B4	4	1929
U60/500	HW	DH	4.0	2.00	500	60			B4	4	1930
U65/550	HW	DH	7.5	1.25	550	65			USM4	4	1929
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
U75/300	HW	DH	4.0	2.00	300	75			B4	4	1929
U120/500	HW	IH	4.0	2.00	500	60			B4	14	1930
U191	ED	IH	19.0	0.30		150	5000		IO+tc	55
U192	HW	IH	19.0	0.30	250	180			B9A	18
U193	ED	IH	19.0	0.30		175	5500		B9A	34
U201	HW	IH	20.0	0.20	250	90			IO	55	1947
U251	ED	IH	25.0	0.30		120	7000		B9A+tc	34
U281	ED	IH	28.0	0.20	250	120			IO+tc	55	1951
U282	ED	IH	28.0	0.20		120	4500		IO+tc	121	1952
U291	HW	IH	29.0	0.30	250	300			IO	111	1958
U301	ED	IH				150	4500		IO+tc	128
U381	HW	IH	38.0	0.10	250	110	700		B9A	18
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
U403	HW	IH	40.0	0.20	250	120		1380	MO	18	1938
U404	HW	IH	40.0	0.10	250	90			B8A	1
U801	2xHW	IH	80.0	o.10	250	300			IO	117	1949
U4020 = CV1267	HW	IH	40.0	0.20	250	75			B5	8	1934
UD41	VD	IH	4.0	1.15	550	35			B7	33	1937
UU2	FW	IH	4.0	1.00	250	60			B4	14	1930
UU3	FW	IH	4.0	2.20	250	60			B4	14	1934
UU4	FW	IH	4.0	2.20	350	120		400	B4	14	1936
UU5	FW	IH	4.0	2.30	500	120		580	B4	14	1936
UU6	FW	IH	4.0	1.35	350	90		405	MO	8	1938
UU7	FW	IH	4.0	2.30	350	120		405	MO	8	1938
UU8	FW	IH	4.0	2.80	350	250		380	MO	8	1939
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
UU9	FW	IH	6.3	0.58	350	90			B8A	14	1948
UU10	FW	IH	4.0	2.30	500	180			B4	14	1951
UU12	FW	IH	6.3	1.00	350	150			B9A	31
UU30/250	FW	DH	4.0	1.00	250	30			B4	5	1930
UU60/250	FW	IH	4.0	2.00	250	60			B4	14	1929
UU120/250	FW	DH	4.0	2.00	250	120			B4	5
UU120/350	FW	DH	4.0	2.50	350	120			B4	5	1930
UU120/500	FW	IH	4.0	2.50	500	120			B4	14	1931
UU4020	HW	IH	30.0	0.20	250	120			Ct8	6
UY41	HW	IH	50.0	0.10	250	90			B8A	1	1954
V960 = CV1133	HW	IH	4.0	1.30	2500	60	7000	1500	B4+tc	17
V1904 = CV1072	HW/MV	DH	4.0	3.00	1500	500	5200		B4+tc	6
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
V1906 = CV20	EHT	DH	4.0	2.50	1500	75	4000		B4+tc	6
V1907 = CV1111	HW	DH	4.0	1.10	5000	50	14kV		B4+tc	6
V1913 = CV1508	HW	DH	4.0	3.00	2750	125	8000		B4+tc	6
V1920 = CV121	EHT	DH	4.0	2.10	5800	75	16.5kV		B4+tc	6

Tuning Indicators
Type	Heater		Anode		Target		-Vg1	Shadow	Base		Year
	Volts	Amps	Volts	mA	Volts	mA	max/min	angle x°	Type	Ref	Year
Mazda
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
1M1 = Y25 (MOV)	1.4	25mA			90 60	0.25 0.12	13.5/0 8/0		B8D	9
6FG6 = EM84	6.3	0.27	250		250	1.6	22/0		B9A	56
6M1	6.3	0.30			250	1.16	22.5/0		IO	46
6M2 (Dual sensitivity)	6.3	0.20			250	0.46	4/0&20/0		IO	135
10M1	18.0	0.10			250	1.16	22.5/0		IO	46
10M2(Dual sensitivity)	12.6	0.10			200	0.40	3/0&20/0		IO	136
ACME	4.0	0.50	250	0.24	250	1.50	22/0	0/90	B7	19	1937
ME41	4.0	0.50	250	0.23	250	1.16	22.5/0		MO	21	1939
ME91	9.0	0.20	175	0.16	175	2.70	19/0		MO	21	1938
ME920	9.0	0.20	200	0.18	200	2.60	19/0		B7	19	1937

Thyratrons
Type	Heater		Anode		Control	fmax	Gas	Base		Year
	Volts	Amps	Pk Volts	Pk mA	Ratio	KHz		Type	Ref	Year
Mazda
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
6K25	6.3	0.95	400	500	20			IO	20
20A2	6.3	1.00	650	1.25A	300			IO	118
20A3	6.3	0.60	650	500	250			B7G	46
21A1	6.3	0.95	600	1.25A	300			IO	126
T11	4.0	1.20	700	300			Mercury	B5+tc	9	1936
T21	4.0	1.50	200	300	20		Argon	B5+tc	9	1936
T31 (Clear)	4.0	1.50	200	500	20		Helium	B5+tc	9	1937
T32 (Metallised)	4.0			500			Helium	B5+tc	9
T41	4.0	1.50	400	500	20		Helium	MO	16	1940

Barretters
Type	Current	Voltage	Base		Year
	Amps	Min-Max	Type	Ref	Year
Mazda
Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
BU10	0.13	50-80	B4	13
BU29/4	0.285	2.5-6	IO	pins 2&7
BU30/6	0.30	3-9	ES	1
BU65/10	0.65	6-1	ES	1
BU78/10	0.78	8-14	B4	20
BU115/22	1.15	11-31	B4	20
BU200/14	2.00	8-20	B4	20
BU280/20	2.80	10-30	B4	13
BU600/6	6.00	3-9	ES	1

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rvd-069

▼ Menu

Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.

Extras ▼

Help information: Abbreviations - Explanations - Notes.

Post-1925 amplifying valves, frequency changersand signal diodes

Type

Description

Filament

Anode

Auxillary Grid

Grid

ra

gm/go

RL

Po

Rk

Base (1)Pin-out details for non-exhibits can be found with the base details.

Year

Volts

Amps

Volts

mA

Volts

mA

-V

kΩ

mA/V

kΩ

Watts

Ω

Type

Ref

Mazda

Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless

1C1 (IR5)

Heptode FC

1.4*

50mA

90

1.6

67.5

3.2

0

600.0

0.30⅄

B7G

3

1C2 (1AC6)

Heptode FC

1.4*

50mA

mix85 osc80

0.71.6

60.0

0.15

0

650.0

0.325⅄

B7G

54

1C3 (1AB6)

Heptode FC

1.4*

50mA

mix85osc35

0.61.5

68

0.8

0

800.0

0.3⅄

B7G

54

1D13

Single diode

1.4

0.15

300

0.5

Post-1925 amplifying valves, frequency changers
and signal diodes

r_a

g_m/g_o

R_L

P_o

R_k

Base^{(1)Pin-out details for non-exhibits can be found with the base details.}

mix85
osc80

0.7
1.6

mix85
osc35

0.6
1.5

1F2
1L4

1F3
1T4