1N945B

• 1N941B, 1N943B, 1N944B AND 1N945B AVAILABLE IN JAN, JANTX AND JANTXV PER MIL-PRF-19500/157 • 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 specified. JEDEC TYPE NUMBER ZENER VOLTAGE v @I z ZT ZENER TEST CURRENT I ZT MAXIMUM VOLTAGE TEMPERATURE ZENER TEMPERATURE RANGE IMPEDANCE STABILITY ZZT ∆V ZT MAXIMUM EFFECTIVE TEMPERATURE COEFFICIENT (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 specified mV at any discrete temperature between the established limits, per JEDEC standard No.5. 22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com 1N941 thru 1N945B INCLUDING -1 VERSIONS Pd, Rated Power Dissipation (mW) 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 175