Download the 1N974 datasheet PDF.
This datasheet also covers the 1N957 variant, as both devices belong to the same silicon planar zener diodes family and are provided as variant models within a single manufacturer datasheet.
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
1N974. For precise diagrams, and layout, please refer to the original PDF.
1N957...1N978 SILICON PLANAR ZENER DIODES Standard Zener voltage tolerance is ± 20%. Add suffix "A" for ± 10% tolerance and suffix "B" for ± 5% tolerance. Other tolerance...
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for ± 10% tolerance and suffix "B" for ± 5% tolerance. Other tolerances, 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 Glass Case DO-35 Dimensions in mm Absolute Maximum Ratings (Ta = 25 OC) Parameter Symbol Value Unit Power Dissipation Ptot 500 1) mW Junction Temperature Tj 175 OC Storage Temperature Range TStg - 65 to + 175 OC 1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case Characteristics at Ta = 25 OC Parameter Thermal Resistance Junction to Ambient Air Symbol
1N974 Datasheet
