List of Valves by Designation with Equivalent Types


K250
Rectifier HW
 

K300

Klystron

 

K3003

Klystron

 

K3007

Klystron

CV9423


K301
Klystron
 

K302
IO
1
2
3
4
5
6
7
8
tc
-
h
-
-
res
-
h,k
-
ref
 
Klystron
Klystron
Vh
Ah
Va
mAa
6.3
0.6
350
35.0
 
CV2164

K3020

Klystron

 

K3020A

Klystron

 


K30K
 
 

K311

Klystron

 


K324
Klystron
CV2304

K335

Klystron

CV2343

K337

Klystron

CV4515


K33A
Triode
 

K342

Klystron

CV6003

K350

Klystron

CV5426

K351

Klystron

CV2494


K353
Klystron
 

K357

Klystron

 

K359

Klystron

CV5985

K361

Klystron

 

K361B

Klystron

 


K391
Klystron
CV6194

K391A

Klystron

CV6142


K4
Bi-Grid
 

K90B
 
 

KBC32
IO
1
2
3
4
5
6
7
8
tc
m
f(+)
a
a(d2)
a(d1)
-
f(-)
-
g1
 
Double Diode Triode
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.05
175
-1.5
12.0
4,850
14.0
 
 

KCF30

Triode Pentode

 


KD21
IO
1
2
3
4
5
6
7
8
-
k
7
-
a
-
3
-
 
Voltage Stabiliser
Stabiliser
Va
mAa
75
40
 
OA3 VR75/30 QS75/40 CV3789 G75/2D

KD24
IO
1
2
3
4
5
6
7
8
-
k
ic
-
a
-
ic
-
 
Voltage Stabiliser
Stabiliser
Va
mAa
75
40
 
VR105/30 G105/1D CU686 QS1206 0C3

KD60

Voltage Stabiliser

 

KD61

Voltage Stabiliser

 

KD63

Voltage Stabiliser

CV5107


KF35
IO
1
2
3
4
5
6
7
8
tc
m
f+
a
g2
g3
-
f-
-
g1
 
Pentode
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
2.0
0.05
120
60
-1.5
1.45
0.5
1.5M
1.08
 
 

KK32
IO
1
2
3
4
5
6
7
8
tc
m
f(+)
a
g3,g5
g1
g2
f(-)
-
g4
 
Octode
Octode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
μ
2.0
0.13
135
45
0
0.7
0.7
2.5M
0.27
 
 

KL1
B4
1
2
3
4
tc
a
g1
h
h
k
 
Triode
Triode
Vh
Ah
Va
Vg
mAa
3.5
2.0
150
-
4.0
 
 

KL35
IO
1
2
3
4
5
6
7
8
-
f+
a
g2
g1
-
f-
-
 
Pentode
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
2.0
0.15
135
135
-4.5
5.6
-
0.15M
2.2
0.34
10%
 
1F5G

KLL32
IO
1
2
3
4
5
6
7
8
-
f+
a(1)
g1(1)
g1(2)
a(2)
f-,g3
g2
 
Double Pentode
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
2.0
0.3
135
135
-11.3
16.9
5.7
 
 

KR3

 

CV0158

KR4

 

CV0180

KR6/1

Velocity Modulated Valve

CV0116

KR6/2

Velocity Modulated Valve

CV0237


KR6/3
IO
1
2
3
4
5
6
7
8
tc
g1
h
-
Res
-
-
h
k
Ref
 
Velocity Modulated Valve
CV0238

KRN2
Velocity Modulated Valve (Klystron)
CV0087

KRN2A
Klystron
CV0129 CV0223 CV0224

KRN3

Klystron

CV0130


KS
Diode
 

KS9-20
IO
1
2
3
4
5
6
7
8
tc
res
h
-
o/p
-
-
h
k
ref
 
Klystron
Klystron
Vh
Ah
6.3
0.6
 
CV1795

KS9-20D
IO
1
2
3
4
5
6
7
8
tc
res
h
-
o/p
-
-
h
k
ref
 
Klystron
Klystron
Vh
Ah
6.3
0.6
 
2K25 723A/B

KS9-40D
Klystron
 

KT101

Beam Tetrode

 


KT2
B5
1
2
3
4
5
a
g1
f(-)
f(+)
g2
 
Beam Tetrode
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
2.0
0.2
150
150
-4.5
7.5
1.7
2.5
0.5
 
ARP1 CV1118 NR39 PP2 PT2 Pen220 VR118 220HPT 220OT PM22A PenB1

KT21
Pentode
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
2.0
0.3
150
120
-2.5
5.3
1.0
5.3
0.46
 
PM22D Pen231

KT24

Pentode

ARP18 CV1334

KT30

Beam Tetrode

CV3519

KT31

Beam Tetrode

CV3520


KT32
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
26
0.3
135
135
-7.6
75
5.0
9.0
3.5
11%
 
25L6G CV1287 CV1502 NR95 VR502

KT33
IO
1
2
3
4
5
6
7
8
hct
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
26
0.3
200
200
-13.2
60
10
10.0
5
 
 

KT33C
IO
1
2
3
4
5
6
7
8
hct
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
26
0.3
200
200
-13.2
60
10
10.0
5
 
CV1503 VR503

KT35
IO
1
2
3
4
5
6
7
8
hct
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
13
0.6
200
200
-11.5
50
8.5
10.0
4.2
 
 

KT36
IO
1
2
3
4
5
6
7
8
tc
-
h
-
g2
g1
-
h
k
a
 
Pentode
Pentode
Vh
Ah
Va
Vs
Pdiss
26
0.3
250
200
10W
 
 

KT41
B7
1
2
3
4
5
6
7
-
g1
g2
h
h
k
a,
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
4.0
2.0
250
250
-4.4
40
8.5
10.5
4.2W
8%
 
4066A 7A3 AC2/Pen ARP25 CV1181 NR59 PenA4 AC/Z APP4B OP42 A70C 42MP/Pen PenA4 420T PT4 7A2 N41 Pen4VB A70D

KT42
B7
1
2
3
4
5
6
7
-
g1
g2
h
h
k
a
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
4.0
1.0
250
250
-16.5
34
5.5
2.5
3.25
 
7A2 AC/Pen APP4A CV1174 MKT4/5 MPPen P4VA MKT4/7 A70B N40 Pen4VA

KT44
B7
1
2
3
4
5
6
7
tc
-
g1
s
h
h
k
g2
a
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
4.0
2.0
250
250
-25
85
20
6.3
7.5
9%
 
ARP26 CV1340 CV1437 CV1576 VT73 VT75A

KT45
B7
1
2
3
4
5
6
7
tc
-
g1
s
h
h
k
g2
a
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
4.0
2.0
300
300
-15
85
6.3
6.3
7.25
9%
 
CV1825

KT55

Beam Tetrode

 


KT61
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
6.3
0.95
250
250
-4.4
40.0
8.5
10.5
4.3
8%
 
6AG6 CV1438 CV2938 EL33 N147 OM9 6P25

KT63
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
6.3
0.7
250
250
-16.5
34
5.5
2.5
3.0
 
6F6G ARP17 CV1186 CV1911 NR85

KT66
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
nc
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
6.3
1.27
250
250
-15
85
6.3
22.5k
6.3
7.25
9%
 
6L6G CV1075 EL37 PP60 VT75

KT67

Beam Tetrode

CV0437


KT71
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g1
-
h
k
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
48
0.16
175
175
-9.8
70
12
10
5W
9%
 
50L6G

KT76

Beam Tetrode

 


KT77
IO
1
2
3
4
5
6
7
8
g3
h
a
g2
g1
nc
h
k
 
Beam Tetrode
Pentode
Vh
Ah
Va
Vs
Vg
mAs
gm
Vg
Pdiss
Pout
D
6.3
1.5
800
400
-39,mAa_91
19
11.0
66
25W
100W
5%
 
EL34

KT8

Beam Tetrode

CV1079


KT81
B8B
1
2
3
4
5
6
7
8
h
a
g2
ic
ic
g1
k
h
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
D
6.3
0.95
250
250
-4.4
40
7.5
10.8
4.3W
8%
 
7C5

KT88
IO
1
2
3
4
5
6
7
8
-
h
a
g2
g1
-
h
k,bp
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
Pout
6.3
1.8
300
300
-20
130
13.5
12
12.5W
 
12E13 7D11 CV5220 6550

KT8C
B5
1
2
3
4
5
tc
g2
g1
h
h
k
a
 
Beam Tetrode
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
Pdriv
Pdiss
Pout
freq
f.max
6.3
1.27
600
300
-100
85
6.0
0.5
25
38
25MHz
100MHz
 
VT79

KTW61
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2
g3
-
h
k
g1
 
Beam Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
100
-3
8.0
2.7
0.46M
2.9
 
 

KTW62
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2
g3
-
h
k
g1
 
Tetrode
Beam Tetrode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
100
-3
8.0
2.7
0.46M
2.9
 
CV1100 VR100

KTW63
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g3
nc
h
k
 
Pentode
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
125
-3
10.5
2.6
0.6M
1.65
 
6K7G ARP15 CV1195 CV1941 NR81 NR86 W63

KTW73M

Tetrode

CV3527


KTW74M
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g3
nc
h
k
 
Beam Tetrode
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
12.6
0.15
250
125
-3
10.5
2.6
0.6M
1.65
 
12K7GT CV0918 W76

KTZ41

Tetrode

CV1191 CV3529 NR76


KTZ63
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2
g3
-
h
k
g1
 
Pentode
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
100
-2
1.0
0.25
1.5M
1.23
 
6J7G 6S7 ARP16 CV1074 NR83 VT74 Z63

KTZ73
Pentode
ARP38 CV1343 CV3530

KY50
Rectifier EHT
Diode
Vh
Ah
mAa
2.0
0.2
0.2
 
U25 U47 2L2

KY80
B9A
1
2
3
4
5
6
7
8
9
tc
h,k,s
h
-
h,k,s
h
h,k,s
-
h
h,k,s
a
 
Rectifier EHT
Diode
Vh
Ah
mAa
2.0
0.35
0.2
 
2J2 R20 U26 U49
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