1N5251

1N5220...1N5281 SILICON PLANAR ZENER DIODES Standard Zener voltage tolerance is ± 20%. Add suffix "A" for ± 10% Tolerance, suffix "B" for ± 5% tolerance, suffix "C" for ± 2% tolerance, Other tolerance, non standard and higher Zener voltages are upon request. Max. 0.5 Max. 1.9 Min. 27.5 Black Cathode Band Black Part No. Black "ST" Brand XXX ST Max. 3.9 Min. 27.5 Max. 0.45 Max. 1.9 Min. 27.5 Black Cathode Band Black Part No. XXX Max. 2.9 Min. 27.5 Glass Case DO-35 Dimensions in mm Glass Case DO-34 Dimensions in mm Absolute Maximum Ratings (Ta = 25 OC) Parameter Symbol Value Power Dissipation at Tamb = 75 OC Ptot 500 1) Junction Temperature Tj 200 Storage Temperature Range TS - 65 to + 200 1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case. Unit mW OC OC Characteristics at Ta = 25 OC Parameter Symbol Max. Thermal Resistance Junction to Ambient Air RthA 0.3 1) Forward Voltage at IF = 200 mA VF 1.1 1) Valid pr...