• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE CD4728A thru • ELECTRICALLY EQUIVALENT TO 1N4728A THRU 1N4764A CD4764A • ZENER DIODE CHIPS • 1 WATT CAPABILITY WITH PROPER HEAT SINKING • COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES, WITH THE EXCEPTION OF SOLDER REFLOW 23 MILS 15 MILS MAXIMUM RATINGS 23 MILS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C Forward Voltage @ 200 mA: 1.5 Volts Maximum TYPE NUMBER NOMINAL ZENER VOLTAGE (VZ) (Note 1) TEST CURRENT (lZT) MAXIMUM ZENER IMPEDANCE (ZZT @ lZT) (Note 2) MAXIMUM REVERSE CURRENT (lR @ VR) TEST VOLTAGE (VR) MAXIMUM KNEE IMPEDANCE (ZZK ) (Note 2) TEST CURRENT (lZK) VOLTS mA OHMS µA VOLTS OHMS mA CD4728A CD4729A CD4730A CD4731A 3.3 3.6 3.9 4.3 76 69 64 58 10 10 9 9 100 100 100 10 1 1 1 1 400 400 400 400 1.0 1.0 1.0 1.0 CD4732A CD4733A CD4734A CD4735A 4.7 5.1 5.6 6.2 53 49 45 41 8 7 5 2 10 5 5 5 1 1 2 3 500 550 600 700 1.0 1.0 1.0 1.0 CD4736A CD4737A CD4738A CD4739A 6.8 7.5 8.2 9.1 37 34 31 28 3.5 4.0 4.5 5.0 3 3 3 3 4 5 6 7 700 700 700 700 1.0 0.5 0.5 0.5 CD4740A CD4741A CD4742A CD4743A 10 11 12 13 25 23 21 19 7 8 9 10 3 2 1 0.5 7.6 8.4 9.1 9.9 700 700 700 700 0.25 0.25 0.25 0.25 CD4744A CD4745A CD4746A CD4747A 15 16 18 20 17 15.5 14 12.5 14 16 20 22 0.1 0.1 0.1 0.1 11.4 12.2 13.7 15.2 700 700 750 750 0.25 0.25 0.25 0.25 CD4748A CD4749A CD4750A CD4751A 22 24 27 30 11.5 10.5 9.5 8.5 23 25 35 40 0.1 0.1 0.1 0.1 16.7 18.2 20.6 22.8 750 750 750 1000 0.25 0.25 0.25 0.25 CD4752A CD4753A CD4754A CD4755A 33 36 39 43 7.5 7.0 6.5 6.0 45 50 60 70 0.1 0.1 0.1 0.1 25.1 27.4 29.7 32.7 1000 1000 1000 1500 0.25 0.25 0.25 0.25 CD4756A CD4757A CD4758A CD4759A 47 51 56 62 5.5 5.0 4.5 4.0 80 95 110 125 0.1 0.1 0.1 0.1 35.8 38.8 42.6 47.1 1500 1500 2000 2000 0.25 0.25 0.25 0.25 CD4760A CD4761A CD4762A CD4763A 68 75 82 91 3.7 3.3 3.0 2.8 150 175 200 250 0.1 0.1 0.1 0.1 51.7 56.0 62.2 69.2 2000 2000 3000 3000 0.25 0.25 0.25 0.25 CD4764A 100 2.5 350 0.1 76.0 3000 0.25 15 MILS ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified BACKSIDE IS CATHODE FIGURE 1 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 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: [email protected] CD4728A thru CD4764A 1000 500 400 300 3. 3 VO LT 27 100 VO LT 1 5. LT VO ZENER IMPEDANCE ZZT (OHMS) 200 50 40 30 11 20 VO LT 10 6.2 VO LT 5 4 3 2 1 .1 .2 .3 .4 .5 1 2 5 10 20 OPERATING CURRENT lZT (mA) 30 40 50 100 FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT