This part is a kind of semiconductor called 1N975B.

Function of this product has SILICON ZENER DIODE.

Manufacturers : Central Semiconductor

Image and pinout :

Some of the text within the PDF file :

1N957B THRU 1N992B SILICON ZENER DIODE 6.8 VOLTS THRU 200 VOLTS 500mW, 5% TOLERANCE w w w. c e n t r a l s e m i . c o m DESCRIPTION: The CENTRAL SEMICONDUCTOR 1N957B Series Silicon Zener Diode is a high quality voltage regulator designed for use in industrial, commercial, entertainment and computer applications. DO-35 CASE MAXIMUM RATINGS: (TL=75°C) Power Dissipation Operating and Storage Junction Temperature VZ Tolerance: Part number with “B” suffix VZ Tolerance: Part number with “C” suffix VZ Tolerance: Part number with “D” suffix SYMBOL PD TJ, Tstg 500 -65 to +200 ±5 ±2 ±1 UNITS mW °C % % % ELECTRICAL CHARACTERISTICS: (TA=25°C) VF=1.5V MAX @ IF=200mA (for all types) TYPE 1N957B 1N958B 1N959B 1N960B 1N961B 1N962B 1N963B 1N964B 1N965B 1N966B 1N967B 1N968B 1N969B [ ... ]

1N975B PDF Datasheet Download