This part is a kind of semiconductor called 1N4454.

Function of this product has SWITCHING DIODE.

Manufacturers : Compensated Deuices Incorporated

Image and pinout :

Some of the text within the PDF file :

• 1N4454 and IN4454-1 AVAILABLE IN JAN, JANTX, AND JANTXV PER MIL-PRF-19500/144 • SWITCHING DIODE • HERMETICALLY SEALED • METALLURGICALLY BONDED • DOUBLE PLUG CONSTRUCTION 1N4454 1N4454-1 MAXIMUM RATINGS Junction Temperature: -55°C to +175°C Storage Temperature: -55°C to +175°C Operating Current: 200 mA @ TA = +25°C Derating Factor: 1.33 mA/°C Above TA = + 25°C Surge Current A: 1A (pk), Pw = 1 sec Surge Current B: 4A (pk), Pw = 1 µs ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified. VBR @5µA V RWM I0 Vf 1 @I F = 10 mA Vf 2 @I F = 10 mA TA = 150°C t rr Volts 75 Volts (pk) 50 mA 200 V dc 1.0 V dc 0.7 n sec 4 FIGURE 1 I R1 @ 50 V dc I R2 @ 50 V TA = 150°C CAPACITANCE @0V DESIGN DATA CASE: Hermetically sealed glass case per MIL-S-19500/144 [ ... ]

1N4454 PDF Datasheet Download