• 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: -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
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
29
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
µ
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
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.
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
199
15 MILS
23 MILS
CD4728A
thru
CD4764A
1000
500
400
300
200
ZENER IMPEDANCE ZZT (OHMS)
3.
3
VO
LT
27
100
VO
LT
5.
1
L
VO
T
50
40
30
20
11
VO
LT
10
6.2
5
4
3
2
VO
LT
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
200
嵌入式系统
