ManufacturerWestern Electric Company
Dimensionsoverall: 1 3/4 in x 1/2 in x 1/4 in
DescriptionIncluded is a description card from the Transistor Museum that says, "
Device ID: WE Type 400A/1N43 diode
Type: Germanium point contact
Case Color/Style: Brown phenolic axial
Vintage/Date Code: 1950s/1960s
Use: General purpose diode/radio detector
Notes: Rugged "workhorse" diode for the Bell System. Based on 1940s design."