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The 19G3 is a half wave vacuum rectifier based on the VX6010. The heater needs a warm-up time of 15 seconds minimum before HT is applied.

The high voltage involved requires the use of ceramic insulators.

Thanks to Mark Mallison for sending the images.

The wide glass tube envelope is 32 mm in diameter, and excluding the IO base pins is 82 mm tall.

Reference: Data-sheet. Type 19G3 was first introduced in 1948. See also 1948 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.