• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE CD3154 thru • 8.4 VOLT NOMINAL ZENER VOLTAGE + 5% CD3156 • MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS • ELECTRICALLY SIMILAR TO 1N3154 THRU 1N3156 • COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES, WITH THE EXCEPTION OF SOLDER REFLOW 38 MILS 23 MILS 38 MILS 10 MILS MAXIMUM RATINGS 11 MILS 23 MILS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C FIGURE 1 ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise speci½ed. JEDEC TYPE NUMBER ZENER VOLTAGE V @I ZT ZT ZENER TEST CURRENT I ZT MAXIMUM MAXIMUM VOLTAGE TEMPERATURE ZENER TEMPERATURE RANGE IMPEDANCE STABILITY ZZT ³V ZT MAXIMUM (Note 1) EFFECTIVE TEMPERATURE COEFFICIENT METALLIZATION: Top: C (Cathode).............Al A (Anode)................Al Back:.................................Au (Note 2) VOLTS mA OHMS mV CD3154 8.00-8.80 10 25 130 -55 to + 100 °C 0.01 CD3155 8.00-8.80 10 25 65 -55 to + 100 0.005 CD3156 8.00-8.80 10 25 26 -55 to + 100 0.002 DESIGN DATA % / °C AL THICKNESS.......25,000 Å Min GOLD THICKNESS...4,000 Å Min CHIP THICKNESS.............10 Mils NOTE 1 Zener impedance is derived by superimposing on lZT @ 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. CIRCUIT LAYOUT DATA: Backside must be electrically isolated. Backside is not cathode. For Zener operation cathode must be operated positive with respect to anode. TOLERANCES: ALL Dimensions + 2 mils 6 LAKE STREET, LAWRENCE, PHONE (978) 620-2600 WEBSITE: http://www.microsemi.com M A S S A C H U S E T T S 01841 FAX (978) 689-0803 185 CD3154 CD3156 Pd, Rated Power Dissipation (mW) thru 600 500 400 300 200 100 0 0 25 50 75 100 125 150 TL, Ambient temperature (C°) 100 FIGURE 2 ZENER IMPEDANCE ZZT (OHMS) POWER DERATING CURVE 50 10 5 1 8 9 10 11 12 13 OPERATING CURRENT lZT (mA) FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT CHANGE IN TEMPERATURE COEFFICIENT ( %/°C) +.0015 +.0010 +.0005 0 -.0005 -.0010 -.0015 6 8 10 12 OPERATING CURRENT lZT (mA) 14 FIGURE 4 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 186 175