The EAB1 is a triple diode designed for signal detection, ACG rectification and delaying the start of the AGC action in all mains sets with heaters in parallel.
The AAB1 differs in having a 4 Volt 0.64 Amp heater. And the PAB1 designed for series heater chains has a 300 mA heater and draws that current at 6.3 Volts.
The original box.
Thanks to Mark from Vintage-parts for sending these images.
The classic envelope is mm in diameter, and excluding the Ct8 base pins is mm tall.
References: Datasheet, & 1043. Type EAB1 was first introduced in 1938.
Absolute Maximum Operating Conditions¶
Updated February 27, 2017. shape:classic construction:pinch type:triple.diode age:1930.1940 base:ct8 heater:6.3v pins:8 pin:1.m pin:2.h pin:3.h pin:4.k pin:5.a(d3) pin:6.- pin:7.a(d2) pin:8.a(d1)