The DEH612 is a general purpose triode from 1927 and is part of the M-OV six volt range. The bulb is silvered to the point where all internal details are obscured.
The brass base pins are of two part construction with the lead-out wires wrapped round and soldered into place.
The balloon envelope is 56 mm in diameter, and excluding the B4 base pins is 95 mm tall.
Reference: 1043. Type DEH612 was first introduced in 1927.
Absolute Maximum Operating Conditions¶
Updated April 16, 2013. shape:balloon construction:pinch type:triode age:1920.1930 base:b4 heater:6.0v pins:4 pin:1.a pin:2.g1 pin:3.f pin:4.f