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1N981B Datasheet(PDF) 2 Page - Digitron Semiconductors |
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1N981B Datasheet(HTML) 2 Page - Digitron Semiconductors |
2 / 3 page DIGITRON SEMICONDUCTORS 144 Market Street Kenilworth NJ 07033 USA phone +1.908.245-7200 1N957B-1N992B 500mW SILICON ZENER DIODES Nominal zener voltage (2) Zener test current Maximum zener impedance(3) Maximum DC zener current (4) Maximum surge current (5) Maximum reverse leakage current Maximum temperature coefficient VZ IZT ZZT @ IZT ZZK @IZK IZM IZSM IR @VR αvz Part number (1) Volts mA Ohms Ohms mA mA mA µA Volts %/°C 1N984B 91 1.4 400 3000 0.25 4.1 21 5 69.2 0.099 1N985B 100 1.3 500 3000 0.25 3.7 18 5 76.0 0.110 1N986B 110 1.1 750 4000 0.25 3.3 16 5 83.6 0.110 1N987B 120 1.0 900 4500 0.25 3.1 15 5 91.2 0.110 1N988B 130 0.95 1100 5000 0.25 2.7 13 5 98.8 0.110 1N989B 150 0.85 1500 6000 0.25 2.4 12 5 114.0 0.110 1N990B 160 0.80 1700 6500 0.25 2.2 11 5 121.6 0.110 1N991B 180 0.68 2200 7100 0.25 2.0 10 5 136.8 0.110 1N992B 200 0.65 2500 8000 0.25 1.8 9 5 152.0 0.110 NOTE 1. Zener voltage tolerance on ‘’B’’ suffix is + 5%. Suffix letter A denotes +10%. No suffix denotes +20% tolerance. ‘’C’’ suffix denotes + 2% and ‘’D’’ suffix denotes + 1%. NOTE 2. Zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25°C + 3°C. NOTE 3. Zener impedance is derived by superimposing on IZTA 60HZ rms a.c. current equal to 10% of IZT. NOTE 4: The values of IZM are calculated for a ±5% tolerance on nominal zener voltage. Allowance has been made for the rise in zener voltage above VZT which results from zener impedance and the increase in junction temperature as power dissipation approaches 400mW. In the case of individual diodes IZM is that value of current which results in a dissipation of 400mW at 75°C lead temperature at 3/8” from body. NOTE 5: The surge for IZM is a square wave or equivalent half-sine wave pulse of 1/120 second duration. MECHANICAL CHARACTERISTICS Case Hermetically sealed glass DO-35 Marking Body painted, alph-numeric Polarity Cathode band Dimensions Inches Millimeters Min Max Min Max BD 0.055 0.090 1.400 2.290 BL 0.120 0.200 3.050 5.080 LD 0.018 0.022 0.460 0.560 LL 1.000 1.500 25.400 38.100 Available Non-RoHS (standard) or RoHS compliant (add PBF suffix) Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number sales@digitroncorp.com fax +1.908.245-0555 www.digitroncorp.com Rev. 20120730 |
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