23 MILS
15 MILS
15 MILS23 MILS
199
• 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
DESIGN DATA
METALLIZATION:
Top: (Anode)....................Al
Back: (Cathode)............. Au
AL THICKNESS...... .....25,000 ÅMin
GOLD THICKNESS........4,000 ÅMin
CHIP THICKNESS..................10 Mils
CIRCUIT LAYOUT DATA:
For Zener operation, cathode
must be operated positive
with respect to anode.
TOLERANCES: ALL
Dimensions + 2 mils
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Forward Voltage @ 200 mA: 1.5 Volts Maximum
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise speci½ed
NOMINAL MAXIMUM MAXIMUM MAXIMUM
TYPE ZENER TEST ZENER REVERSE TEST KNEE TEST
NUMBER VOLTAGE CURRENT IMPEDANCE CURRENT VOLTAGE IMPEDANCE CURRENT
(VZ)(l
ZT)(Z
ZT @ lZT)(l
R@ VR)(V
R)(Z
ZK )(l
ZK)
(Note 1) (Note 2) (Note 2)
VOLTS mA OHMS
µ
A VOLTS OHMS mA
CD4728A 3.3 76 10 100 1 400 1.0
CD4729A 3.6 69 10 100 1 400 1.0
CD4730A 3.9 64 9 100 1 400 1.0
CD4731A 4.3 58 9 10 1 400 1.0
CD4732A 4.7 53 8 10 1 500 1.0
CD4733A 5.1 49 7 5 1 550 1.0
CD4734A 5.6 45 5 5 2 600 1.0
CD4735A 6.2 41 2 5 3 700 1.0
CD4736A 6.8 37 3.5 3 4 700 1.0
CD4737A 7.5 34 4.0 3 5 700 0.5
CD4738A 8.2 31 4.5 3 6 700 0.5
CD4739A 9.1 28 5.0 3 7 700 0.5
CD4740A 10 25 7 3 7.6 700 0.25
CD4741A 11 23 8 2 8.4 700 0.25
CD4742A 12 21 9 1 9.1 700 0.25
CD4743A 13 29 10 0.5 9.9 700 0.25
CD4744A 15 17 14 0.1 11.4 700 0.25
CD4745A 16 15.5 16 0.1 12.2 700 0.25
CD4746A 18 14 20 0.1 13.7 750 0.25
CD4747A 20 12.5 22 0.1 15.2 750 0.25
CD4748A 22 11.5 23 0.1 16.7 750 0.25
CD4749A 24 10.5 25 0.1 18.2 750 0.25
CD4750A 27 9.5 35 0.1 20.6 750 0.25
CD4751A 30 8.5 40 0.1 22.8 1000 0.25
CD4752A 33 7.5 45 0.1 25.1 1000 0.25
CD4753A 36 7.0 50 0.1 27.4 1000 0.25
CD4754A 39 6.5 60 0.1 29.7 1000 0.25
CD4755A 43 6.0 70 0.1 32.7 1500 0.25
CD4756A 47 5.5 80 0.1 35.8 1500 0.25
CD4757A 51 5.0 95 0.1 38.8 1500 0.25
CD4758A 56 4.5 110 0.1 42.6 2000 0.25
CD4759A 62 4.0 125 0.1 47.1 2000 0.25
CD4760A 68 3.7 150 0.1 51.7 2000 0.25
CD4761A 75 3.3 175 0.1 56.0 2000 0.25
CD4762A 82 3.0 200 0.1 62.2 3000 0.25
CD4763A 91 2.8 250 0.1 69.2 3000 0.25
CD4764A 100 2.5 350 0.1 76.0 3000 0.25
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.
BACKSIDE IS CATHODE
FIGURE 1
6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841
PHONE (978) 620-2600 FAX (978) 689-0803
WEBSITE: http://www.microsemi.com
200
CD4728A thru CD4764A
.1 .2 .3 .4 .5 1 2 5 10 20 30 40 50 100
OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
1000
500
400
300
200
100
50
40
30
20
10
5
4
3
2
1
ZENER IMPEDANCE ZZT (OHMS)
3.3 VOLT
5.1 VOLT
27 VOLT
11 VOLT
6.2 VOLT
