JAN1N944B-1

• 1N941B, 1N943B, 1N944B AND 1N945B AVAILABLE IN JAN, JANTX PER MIL-PRF-19500/157 AND JANTXV • 1N941B-1, 1N943B-1, 1N944B-1 AND 1N945B-1 AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/157 1N941 thru 1N945B and 1N941B-1 thru 1N945B-1 • 11.7 VOLT NOMINAL ZENER VOLTAGE • TEMPERATURE COMPENSATED ZENER REFERENCE DIODES • METALLURGICALLY BONDED MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C DC Power Dissipation: 500mW @ +50°C Power Derating: 4 mW / °C above +50°C REVERSE LEAKAGE CURRENT lR = 15µ A @ 25°C & VR = 8 Vdc ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise speci½ed. JEDEC TYPE NUMBER ZENER VOLTAGE vz @ I ZT ZENER TEST CURRENT I ZT MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE ZENER TEMPERATURE RANGE TEMPERATURE IMPEDANCE STABILITY COEFFICIENT ZZT ³V ZT MAXIMUM (Note 1) (Note 2) VOLTS mA OHMS mV °C % / °C 1N941 1N941A 1N941B 11.12—12.28 11.12—12.28 11.12—12.28 7.5 7.5 7.5 30 30 30 88 181 239 0 to + 75 -55 to +100 -55 to +150 0.01 0.01 0.01 1N942 1N942A 1N942B 11.12—12.28 11.12—12.28 11.12—12.28 7.5 7.5 7.5 30 30 30 44 90 120 0 to + 75 -55 to +100 -55 to +150 0.005 0.005 0.005 1N943 1N943A 1N943B 11.12—12.28 11.12—12.28 11.12—12.28 7.5 7.5 7.5 30 30 30 18 36 47 0 to + 75 -55 to +100 -55 to +150 0.002 0.002 0.002 1N944 1N944A 1N944B 11.12—12.28 11.12—12.28 11.12—12.28 7.5 7.5 7.5 30 30 30 9 18 24 0 to + 75 -55 to +100 -55 to +150 0.001 0.001 0.001 1N945 1N945A 1N945B 11.12—12.28 11.12—12.28 11.12 -12.28 7.5 7.5 7.5 30 30 30 4 9 12 0 to + 75 -55 to +150 -55 to +150 0.0005 0.0005 0.0005 FIGURE 1 DESIGN DATA CASE: Hermetically sealed glass case. DO – 35 outline. LEAD MATERIAL: Copper clad steel. LEAD FINISH: Tin / Lead POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any. NOTE 1 Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT. NOTE 2 The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the speci½ed mV at any discrete temperature between the established limits, per JEDEC standard No.5. 6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (978) 689-0803 WEBSITE: http://www.microsemi.com 21 thru 1N945B INCLUDING -1 VERSIONS Pd, Rated Power Dissipation (mW) 1N941 600 500 400 300 200 100 0 0 25 50 75 100 125 150 TL, Lead temperature (C°) 3/8” from body FIGURE 2 CHANGE IN TEMPERATURE COEFFICIENT (% / °C) POWER DERATING CURVE +.0010 +.0005 0 -.0005 -.0010 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 OPERATING CURRENT lZT (mA) 9.5 FIGURE 3 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 100 ZENER IMPEDANCE ZZT (OHMS) 50 20 10 5 2 1 5 6 7 8 9 OPERATING CURRENT lZT (mA) 10 FIGURE 4 ZENER IMPEDANCE VS. OPERATING CURRENT 22 175