• 1N3821A THRU 1N3828A AVAILABLE IN CD3821 thru CD3828A 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 MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C Forward Voltage @ 200mA: 1.2 volts maximum ELECTRICAL CHARACTERISTICS @ 25°C CDI NOMINAL ZENER TYPE ZENER TEST NUMBER VOLTAGE VZ @ 1ZT CURRENT 1ZT (NOTE 1) MAX. DC MAXIMUM ZENER IMPEDANCE ZZT @ 1ZT (NOTE 2) ZZK @ IZK=1mA ZENER MAX. REVERSE CURRENT 1 ZM LEAKAGE CURRENT lR @ VR (NOTE 3) FIGURE 1 OHMS mA µ A VOLTS 10 10 10 10 400 400 400 400 276 276 252 252 100 100 75 75 1 1 1 1 64 64 58 58 9 9 9 9 400 400 400 400 238 238 213 213 25 25 5 5 1 1 1 1 4.7 4.7 5.1 5.1 53 53 49 49 8 8 7 7 500 500 550 550 194 194 178 178 5 5 3 3 1 1 1 1 5.6 5.6 6.2 6.2 45 45 41 41 5 5 2 2 600 600 700 700 162 162 146 146 3 3 3 3 2 2 3 3 VOLTS mA CD3821 CD3821A CD3822 CD3822A 3.3 3.3 3.6 3.6 76 76 69 69 CD3823 CD3823A CD3824 CD3824A 3.9 3.9 4.3 4.3 CD3825 CD3825A CD3826 CD3826A CD3827 CD3827A CD3828 CD3828A OHMS Backside is Cathode NOTE 1 Zener voltage range equals nominal voltage + 5% for “A” Suffix No Suffix denotes + 10%. "C" suffix denotes + 2%, "D" suffix denotes + 1%. NOTE 2 Zener voltage is read using a pulse measurement, 10 milliseconds maximum. NOTE 3 Zener impedance is derived by superimposing on 1 A 60Hz rms a.c. current equal ZT to 10% of 1 . ZT 6 LAKE STREET, LAWRENCE, PHONE (978) 620-2600 WEBSITE: http://www.microsemi.com DESIGN DATA METALLIZATION: Top: (Anode).................... .Al Back: (Cathode).............. ...Au AL THICKNESS....... ....25,000 Å Min GOLD THICKNESS........4,000 Å 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 M A S S A C H U S E T T S 01841 FAX (978) 689-0803 187 CD3821A thru CD3828A 1000 500 400 300 3.3 VOLT ZENER IMPEDANCE ZZT (OHMS) 200 100 5.1 VOLT 50 40 30 20 10 5 4 6.2 VOLT 3 2 1 .1 .2 .5 1 2 5 10 20 50 100 OPERATING CURRENT IZT (mA) FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT 188