2SD1427 silicon NPN transistor - Toshiba

2SD1427 silicon NPN transistor with damper diode by Toshiba.   

Package: TO3-P(H)(BS) package - ugly looking thing   

Download Toshiba 2SD1427 datasheet:    

Status: NOS (New Old Stock)   

(Note: these always test as 2 x common cathode diode if tested on Peak DCA74, this is nornmal)    

(resistance between Emitter & Base stated as 50 Ohms,  usually tests as about 40 Ohms)  

RoHS compliant: no