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| 1N957 THRU 1N978 SILICON PLANAR ZENER DIODES Features Silicon Planar Zener Diodes 20%. Add suffix A Standard Zener voltage tolerance is for 10% tolerance and suffix B for 5% tolerance. Other tolerances, non standard and higher Zener voltages upon request. DIM ENSIONS DIM A B C D inches Min. 1.083 Max. 0.154 0.075 0.020 Min. 27.50 mm Max. 3.9 1.9 0.52 Note Absolute Maximum Ratings (Ta=25 ) Symbols Values Units Zener current see Table "Characteristics" Power dissipation at Tamb=50 Junction temperature Storage temperature range Ptot Tj TS 400 1) mW 175 -65 to +175 Note: (1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case. Characteristics Thermal resistance junction to ambient Air at Tamb=25 Symbols Min. Typ. Max. Units RthA VF - - 0.3 1) K/mW V Forward voltage at IF=200mA 1.5 Note: (1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case. 1 Zener voltage range Type 1) Dynamic resistance Typical temperature coefficient Maximum reverse leakage currrent Maximum regulator current IZM mA 47 42 38 35 32 28 26 24 21 19 17 15 14 13 11 10 9.0 8.5 7.8 7.0 6.4 5.9 Vznom V IZT mA 18.5 16.5 15 14 12.5 11.5 10.5 9.5 8.5 7.8 7.0 6.2 5.6 5.2 4.6 4.2 3.8 3.4 3.2 3.0 2.7 2.5 4.5 5.5 6.5 7.5 8.5 9.5 11.5 13 16 17 21 25 29 33 41 49 58 70 80 93 105 125 rzjT and rzjk at Izk mA 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 1.0 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 (%/ ) IR 2) Test - Voltage Suffix A Suffix B V 4.9 5.4 5.9 6.6 7.2 8.0 8.6 9.4 10.8 11.5 13.0 14.4 15.8 17.3 19.4 21.6 23.8 25.9 28.1 31.0 33.8 36.7 V 5.2 5.7 6.2 6.9 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 uA 150 75 50 25 10 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 1N957 1N958 1N959 1N960 1N961 1N962 1N963 1N964 1N965 1N966 1N967 1N968 1N969 1N970 1N971 1N972 1N973 1N974 1N975 1N976 1N977 1N978 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 0.050 0.058 0.062 0.068 0.075 0.076 0.077 0.079 0.082 0.083 0.085 0.086 0.087 0.088 0.090 0.091 0.092 0.093 0.094 0.095 0.095 0.096 Notes: (1) Test with pulse tp=20ms. (2) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case. 2 RATINGS AND CHARACTERISTIC CURVES 3 |
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