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| * 1N3821A THRU 1N3828A AVAILABLE IN JANHC * PER MIL-PRF-19500/115 * 1 WATT CAPABILITY WITH PROPER HEAT SINKING * ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE * COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES, WITH THE EXCEPTION OF SOLDER REFLOW CD3821 thru CD3828A MAXIMUM RATINGS Operating Temperature: -65C to +175C Storage Temperature: -65C to +175C Forward Voltage @ 200mA: 1.2 volts maximum ELECTRICAL CHARACTERISTICS @ 25C CDI TYPE NUMBER (NOTE 1) NOMINAL ZENER VOLTAGE VZ @ 1ZT (NOTE 2) VOLTS CD3821 CD3821A CD3822 CD3822A CD3823 CD3823A CD3824 CD3824A CD3825 CD3825A CD3826 CD3826A CD3827 CD3827A CD3828 CD3828A 3.3 3.3 3.6 3.6 3.9 3.9 4.3 4.3 4.7 4.7 5.1 5.1 5.6 5.6 6.2 6.2 mA 76 76 69 69 64 64 58 58 53 53 49 49 45 45 41 41 OHMS 10 10 10 10 9 9 9 9 8 8 7 7 5 5 2 2 ZENER TEST CURRENT 1ZT MAXIMUM ZENER IMPEDANCE ZZT @ 1ZT ZZK @ IZK=1mA MAX. DC ZENER CURRENT 1 ZM MAX. REVERSE LEAKAGE CURRENT l @V R R Backside is Cathode (NOTE 3) OHMS 400 400 400 400 400 400 400 400 500 500 550 550 600 600 700 700 mA 276 276 252 252 238 238 213 213 194 194 178 178 162 162 146 146 FIGURE 1 A 100 100 75 75 25 25 5 5 5 5 3 3 3 3 3 3 VOLTS 1 1 1 1 1 1 1 1 1 1 1 1 2 2 3 3 DESIGN DATA METALLIZATION: Top: (Anode)......................Al Back: (Cathode).............. ...Au AL THICKNESS....... ....25,000 A Min GOLD THICKNESS........4,000 A Min CHIP THICKNESS............. .....10 Mils CIRCUIT LAYOUT DATA: For Zener operation, cathode must be operated positive with respect to anode. TOLERANCES: ALL Dimensions + 2 mils NOTE 1 NOTE 2 NOTE 3 Zener voltage range equals nominal voltage + 5% for "A" Suffix No Suffix denotes + 10%. "C" suffix denotes + 2%, "D" suffix denotes + 1%. Zener voltage is read using a pulse measurement, 10 milliseconds maximum. Zener impedance is derived by superimposing on 1 A 60Hz rms a.c. current equal ZT to 10% of 1 . ZT 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 CD3821A thru CD3828A 1000 500 400 300 200 ZENER IMPEDANCE ZZT (OHMS) 100 50 40 30 20 10 5 4 3 2 1 .1 .2 .5 1 2 5 10 20 50 100 OPERATING CURRENT IZT (mA) 3.3 VOLT 5.1 VOLT 6.2 VOLT FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT |
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