1U4 @ The Valve Museum

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1U4

Sensibly equivalent^¶ to:

CV2507 DF904 DT153

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Unknown Proforma entries

The 1U4 is a directly heated sharp cut-off pentode. The use is in battery receivers at RF or IF.

Reference: Data-sheet. Type 1U4 was first introduced in 1946. See also 1946 adverts.

Pin Connections

B7G	1	2	3	4	5	6	7
	f-	a	g2	nc	ic	g1	f+

Absolute Maximum Operating Conditions^¶

Pentode	Vh	Ah	Va	Vs	Vg	mAa	mAs	ra	gm
	1.4	0.05	90	90	-0	1.6	0.45	1.5M	0.9

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated January 09, 2022.

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