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| * ZENER DIODE CHIPS * ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE * ELECTRICALLY EQUIVALENT TO 1N4728A THRU 1N4764A * 1 WATT CAPABILITY WITH PROPER HEAT SINKING * COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES, WITH THE EXCEPTION OF SOLDER REFLOW CD4728A thru CD4764A MAXIMUM RATINGS Operating Temperature: -65C to +175C Storage Temperature: -65C to +175C Forward Voltage @ 200 mA: 1.5 Volts Maximum ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified NOMINAL ZENER VOLTAGE (VZ) (Note 1) VOLTS CD4728A CD4729A CD4730A CD4731A CD4732A CD4733A CD4734A CD4735A CD4736A CD4737A CD4738A CD4739A CD4740A CD4741A CD4742A CD4743A CD4744A CD4745A CD4746A CD4747A CD4748A CD4749A CD4750A CD4751A CD4752A CD4753A CD4754A CD4755A CD4756A CD4757A CD4758A CD4759A CD4760A CD4761A CD4762A CD4763A CD4764A 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91 100 MAXIMUM ZENER IMPEDANCE (ZZT @ lZT) (Note 2) OHMS 10 10 9 9 8 7 5 2 3.5 4.0 4.5 5.0 7 8 9 10 14 16 20 22 23 25 35 40 45 50 60 70 80 95 110 125 150 175 200 250 350 MAXIMUM REVERSE CURRENT (lR @ VR) MAXIMUM KNEE IMPEDANCE (ZZK ) (Note 2) OHMS 400 400 400 400 500 550 600 700 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 2000 2000 2000 2000 3000 3000 3000 23 MILS 15 MILS TYPE NUMBER TEST CURRENT (lZT) mA 76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.7 3.3 3.0 2.8 2.5 TEST VOLTAGE (VR) VOLTS 1 1 1 1 1 1 2 3 4 5 6 7 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0 TEST CURRENT (lZK) mA 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 A 100 100 100 10 10 5 5 5 3 3 3 3 3 2 1 0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 BACKSIDE IS CATHODE FIGURE 1 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 Zener voltage range equals nominal Zener voltage + 5% for "A" Suffix. No Suffix denotes + 10%. Zener voltage is read using a pulse measurement, 10 milliseconds maximum. "C" suffix = + 2% and "D" suffix = + 1%. NOTE 2 Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT. 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 15 MILS 23 MILS CD4728A thru CD4764A 1000 500 400 300 200 ZENER IMPEDANCE ZZT (OHMS) 3. 3 VO LT 27 100 VO LT 1 5. LT VO 50 40 30 20 11 VO LT 10 5 4 3 2 6.2 VO LT 1 .1 .2 .3 .4 .5 1 25 10 20 OPERATING CURRENT lZT (mA) 30 40 50 100 FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT |
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