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| * 1N941BUR-1, 1N943UR-1B, 1N944BUR-1 AND 1N945BUR-1 AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/157 * TEMPERATURE COMPENSATED ZENER REFERENCE DIODES * LEADLESS PACKAGE FOR SURFACE MOUNT * 11.7 VOLT NOMINAL ZENER VOLTAGE * METALLURGICALLY BONDED, DOUBLE PLUG CONSTRUCTION 1N941BUR-1 thru1N945BUR-1 and CDLL941 thru CDLL945B MAXIMUM RATINGS Operating Temperature: -65C to +175C Storage Temperature: -65C to +175C DC Power Dissipation: 500mW @ +50C Power Derating: 4 mW / C above +50C REVERSE LEAKAGE CURRENT lR = 15 A @ 25C & VR = 8 Vdc MILLIMETERS INCHES MIN MAX MIN MAX 1.60 1.70 0.063 0.067 0.41 0.55 0.016 0.022 3.30 3.70 .130 .146 2.54 REF. .100 REF. 0.03 MIN. .001 MIN. ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified. CDI TYPE NUMBER ZENER VOLTAGE VZ @ I ZT ZENER TEST CURRENT I ZT MAXIMUM VOLTAGE TEMPERATURE ZENER TEMPERATURE RANGE IMPEDANCE STABILITY ZZT V ZT MAXIMUM (Note 1) (Note 2) mV 88 181 239 44 90 120 18 36 47 9 18 24 4 9 12 C 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150 0 to + 75 -55 to +100 -55 to +150 EFFECTIVE TEMPERATURE COEFFICIENT DIM D F G G1 S FIGURE 1 % / C 0.01 0.01 0.01 0.005 0.005 0.005 0.002 0.002 0.002 0.001 0.001 0.001 0.0005 0.0005 0.0005 VOLTS CDLL941 CDLL941A CDLL941B CDLL942 CDLL942A CDLL942B CDLL943 CDLL943A CDLL943B CDLL944 CDLL944A CDLL944B CDLL945 CDLL945A CDLL945B 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 - 12.28 11.12 -12.28 mA 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 OHMS 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 DESIGN DATA CASE: DO-213AA, Hermetically sealed glass case. (MELF, SOD-80, LL34) LEAD FINISH: Tin / Lead POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any. MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) Of this Device is Approximately +6PPM/C. The COE of the Mounting Surface System Should Be Selected To Provide A Suitable Match With This Device. NOTE 1 Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT. 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. NOTE 2 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 Pd, Rated Power Dissipation (mW) CDLL941 CDLL945B thru 600 500 400 300 200 100 0 0 25 50 75 100 125 TL, Ambient temperature (C) 150 175 FIGURE 2 POWER DERATING CURVE CHANGE IN TEMPERATURE COEFFICIENT ( %/C) +.0010 +.0005 0 -.0005 -.0010 5.5 6.0 6.5 7.0 7.5 8.0 8.5 OPERATING CURRENT lZT (mA) 9.0 9.5 FIGURE 3 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 100 50 ZENER IMPEDANCE ZZT (OHMS) 20 10 5 2 1 5 6 7 8 9 OPERATING CURRENT lZT (mA) 10 FIGURE 4 ZENER IMPEDANCE VS. OPERATING CURRENT |
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