ManufacturerGeneral Electric Company (GE)
|Other number||126||On the side of the transistor.|
|Other number||2G||On the top of the transistor.|
|Other number||5B||On the top of the transistor.|
|Other number||ES||On the top of the transistor.|
Dimensionsoverall: 1 7/8 in x 1/4 in x 1/4 in
DescriptionIncluded is a description card from the Transistor Museum that says, "
Device ID: GE 2N491/2N492 transistor
Type: N-type silicon bar unijunction
Case Color/Style: Black metal TO-5
Vintage/Date Code: 1950s/1960s
Use: Timers, oscillators, SCR triggers
Notes: Unique technology developed at GE in 1956. Also known as double-base diode."