This part is a kind of semiconductor called 1N6642US.

Function of this product has SWITCHING DIODES.

Manufacturers : Compensated Deuices Incorporated

Image and pinout :

Some of the text within the PDF file :

• 1N6638US,1N6642US, 1N6643US AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/578 • 1N6638U,1N6642U, 1N6643U AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/578 • SWITCHING DIODES • NON-CAVITY GLASS PACKAGE • METALLURGICALLY BONDED 1N6638U & US 1N6642U & US 1N6643U & US MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C Operating Current: 300 mA Derating: 4.6 mA/°C Above TEC = + 110°C Surge Current: IFSM = 2.5A, half sine wave, Pw = 8.3ms ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified. V BR TYPES @ IR =100 µA V RWM V F1 IFM =10 mA (Pulsed) V (pk) 1N6638U & US 1N6642U & US 1N6643U & US 150 100 75 V (pk) 125 75 50 V dc 0.8 1.0 1.0 V dc 1.1 1.2 1.2 (Pulsed) mA 200 100 100 V F2 @ I F2 tfr IF =50 [ ... ]

1N6642US PDF Datasheet Download