The STR100/80 is a voltage stabiliser made by WF Werk f Fernsehelektronik.
The reverse is plain except for the code L3.
The thin glass tube envelope is 21 mm in diameter, and excluding the B9A base pins is 70 mm tall.
Reference: Datasheet. Type StR100/80 was first introduced in 1965.
Absolute Maximum Operating Conditions¶
Updated April 26, 2016. shape:thin.glass.tube construction:all.glass type:voltage.stabiliser base:b9a pins:9 pin:1.a pin:2.k pin:3.ic pin:4.a pin:5.ic pin:6.ic pin:7.k pin:8.ic pin:9.ic