1N957

• 1N962B-1 THRU 1N986B-1 AVAILABLE IN PER MIL-PRF-19500/117 • METALLURGICALLY BONDED • DOUBLE PLUG CONSTRUCTION JAN, JANTX AND JANTXV 1N957 thru 1N986B and 1N962B-1 thru 1N986B-1 MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C DC Power Dissipation: 500 mW @ +50°C Power Derating: 4 mW / °C above +50°C Forward Voltage @ 200mA: 1.1volts maximum ELECTRICAL CHARACTERISTICS @ 25°C JEDEC TYPE NUMBER (NOTE 1) NOMINAL ZENER VOLTAGE V Z (NOTE 2) VOLTS 1N957B 1N958B 1N959B 1N960B 1N961B 1N962B 1N963B 1N964B 1N965B 1N966B 1N967B 1N968B 1N969B 1N970B 1N971B 1N972B 1N973B 1N974B 1N975B 1N976B 1N977B 1N978B 1N979B 1N980B 1N981B 1N982B 1N983B 1N984B 1N985B 1N986B 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 56 62 68 75 82 91 100 110 ZENER TEST CURRENT 1 ZT (NOTE 3) Z @1 ZT ZT mA 18.5 16.5 15.0 14.0 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 2.2 2.0 1.8 1.7 1.5 1.4 1.3 1.1 OHMS 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 90 93 105 125 150 185 230 270 330 400 500 750 Z @1 ZK ZK OHMS 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 2000 2000 2000 2000 3000 3000 3000 4000 mA 1.0 .5 .5 .5 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 .25 1 ZM lR @ VR MAXIMUM ZENER IMPEDANCE MAX. DC ZENER CURRENT MAX. REVERSE LEAKAGE CURRENT mA 55 50 45 41 38 32 31 28 25 24 20 18 16 15 13 12 11 10 9.5 8.8 7.9 7.4 6.8 6.0 5.5 5.0 4.6 4.1 3.7 3.3 µA 5 5 5 5 2 1 1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 VOLTS 5.2 5.7 6.2 6.9 7.6 8.4 9.1 9.9 11 12 14 15 17 18 21 23 25 27 30 33 36 39 43 47 52 56 62 69 76 84 FIGURE 1 DESIGN DATA CASE: Hermetically sealed glass case. DO – 35 outline. LEAD MATERIAL: Copper clad steel. LEAD FINISH: Tin / Lead THERMAL RESISTANCE: (ROJEC): 250 °C/W maximum at L = .375 inch THERMAL IMPEDANCE: (ZOJX): 35 °C/W maximum POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any. NOTE 1 NOTE 2 NOTE 3 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%. Zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25°C + 3°C. Zener impedance is derived by superimposing on 1 A 60Hz rms a.c. current ZT equal to 10% of 1 ZT 6 L AKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (978) 689-0803 WEBSITE: http://www.microsemi.com 23 1N957 thru 1N986B INCLUDING -1 VERSIONS FIGURE 2 Pd, Rated Power Dissipation (mW) 500 400 300 200 100 0 0 25 50 75 100 125 150 175 TA, Ambient temperature (C°) POWER DERATING CURVE 1000 500 400 300 200 ZENER IMPEDANCE ZZT (OHMS) 3. 3 VO LT 27 100 VO LT 5. 1 VO LT 50 40 30 20 11 VO LT 10 6.2 5 4 3 2 VO LT 1 .1 .2 .3 .4 .5 1 25 10 20 OPERATING CURRENT lZT (mA) 30 40 50 100 FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT 24