This part is a kind of semiconductor called MTZ8.2B.

Function of this product has SILICON EPITAXIAL PLANAR ZENER DIODES.

Manufacturers : SEMTECH

Image and pinout :

Some of the text within the PDF file :

MTZ Series SILICON EPITAXIAL PLANAR ZENER DIODES Constant Voltage Control Applications Features • High reliability. White Cathode Band Part No. Black Color max. 1.9 min. 27.5 max. 2.9 min. 27.5 • Glass sealed envelope. (MSD) max. 0.45 Glass case JEDEC DO-34 Dimensions in mm Absolute Maximum Ratings (Ta = 25OC) Symbol Power Dissipation Junction Temperature Storage Temperature Range Ptot Tj TS Value 500 175 -65 to +175 Unit mW O C C O SEMTECH ELECTRONICS LTD. (Subsidiary of Semtech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 03/09/2005 MTZ Series Characteristics at Ta = 25OC Zener Voltage VZ (V) Min. 1.880 1.880 2.020 2.090 2.120 2.220 2.300 2.330 2.430 2.500 2.540 2.690 2.800 2.850 3.010 3.100 3.160 3.320 3.400 [ ... ]

MTZ8.2B PDF Datasheet Download