CV1657 @ The Valve Museum

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CV1657

Sensibly equivalent^¶ to:

3A/108B 4020B POVT79A

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Unknown Proforma entries

The CV1657 is a directly heated triode based on the 4020B. The old GPO code is POVT79A.

Reference: Data-sheet.

Pin Connections

B4	1	2	3	4
	a	g1	f-	f+

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	ra	gm	μ
	2.0	0.2	150	50k	0.6	30

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated October 29, 2017.

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