This part is a kind of semiconductor called 1N937.

Function of this product has TEMPERATURE COMPENSATED ZENER REFERENCE DIODES.

Manufacturers : Digitron Semiconductors

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1N935(A)(B)(UR)-1N935(A)(B)(UR) High-reliability discrete products and engineering services since 1977 TEMPERATURE COMPENSATED ZENER REFERENCE DIODES FEATURES  Available as High Reliability, JANTX level by adding “-HR” suffix.  Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.  Available as surface mount by adding “UR” suffix. MAXIMUM RATINGS Characteristics Junction and storage temperatures DC power dissipation Solder temperatures Values -65 to +175°C 500mW @ TL = 25°C and maximum current IZM of 50 mA. For optimum voltage temperature stability, IZ = 7.5mA (less than 75 mW in dissipated power) 260°C for 10 s (maximum) ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified) Part number Notes 1 1N935 1N935A 1N935B [ ... ]

1N937 PDF Datasheet Download