The GZ33 shares base pin layout with the GZ32 and the GZ34. All are full wave rectifiers with a rating of 500 Volts for the anodes. The GZ34 is an upgrade to the GZ32 and both are rated at 125 mA rectifier current. The GZ33, however, is a high current version and is rated at 250 mA rectified current, and unlike its lower rated counterparts is not given a maximum reservoir current rating, but 200 µF would seem a maximum value that would be used in practice. The cathode is tied to one side of the heater as heater-cathode insulation would not be sufficient to withstand the full voltage.

The classic envelope is 42 mm in diameter and, excluding the IO base pins, is 123 mm tall.

 
Pin Connections

IO	1	2	3	4	5	6	7	8
	M	h	nc	a(2)	nc	a(1)	nc	h-k

 
Absolute Maximum Operating Conditions

Rectifier	Vh	Ah	Va	mAa
	5.0	2.8	500	250

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 12 June 2007 {find valves by name}