This part is a kind of semiconductor called 1N6319.

Function of this product has 500 mW ZENER DIODES.

Manufacturers : Compensated Deuices Incorporated

Image and pinout :

Some of the text within the PDF file :

• AVAILABLE IN JAN, JANTX, JANTXV, AND JANS PER MIL-PRF-19500/533 • 500 mW ZENER DIODES • NON CAVITY CONSTRUCTION • METALLURGICALLY BONDED 1N6309 THRU 1N6320 MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C Power Dissapation: 500 mW @ TL=+75°C @ L=3/8” Power Derating: 5mW/°C above TL=+75°C Forward Voltage: 1.4V dc @ IF=1A dc (Pulsed) 0.056/0.075 1.42/1.91 POLARITY BAND (CATHODE) 0.140/0.180 3.55/4.57 1.00 25.4 0.018/0.022 0.46/0.56 ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified VZ2 NOM. ±5% @ IZ2 VOLTS 1N6309 1N6310 1N6311 1N6312 1N6313 1N6314 1N6315 1N6316 1N6317 1N6318 1N6319 1N6320 2.4 2.7 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 v VZ VZ1 MIN. @IZ1 250µ A VOLTS 1.1 1.2 1.3 1.5 1.8 2.0 2.4 2.8 3.3 4.3 5.2 [ ... ]

1N6319 PDF Datasheet Download