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The CV2851 is a gas filled thyratron designed for industrial control applications. The envelope is also marked with the commercial 3D22 Type designation.

The KB/F identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the F identifies the maker as STC, Paignton.

See 3D22 for more information and the commercial data-sheet.

The wide glass tube envelope is 52 mm in diameter, and excluding the B7D base pins is 96 mm tall.

Reference: Data-sheet. Type CV2851 was first introduced in 1958. See also 1958 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.