The B7G voltage stabilisers were the last to be developed before zener diodes took over as voltage references.

The regulation of this tube was 3 Volts for currents of between 5 and 30 mA. The 0B2WA is a special quality version of the commercial 0B2 and the regulation is tighter at 3 volts. The striking voltage was 133 volts.

The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 45 mm tall.

 
Pin Connections

B7G	1	2	3	4	5	6	7
	a	k	ic	k	a	ic	k

 
Absolute Maximum Operating Conditions

Stabiliser	Va	mAa
	108	30

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 12 June 2007