Voltage: 3.3 - 100 Volts
Power: 1 Watt
CZRL4728 Thru CZRL4764
Features
Silicon Planar Power Zener Diodes
For use in stabilizing and clipping circuits
with higher power rating.
Standard Zener voltage tolerance is
10%. Add suffix "A" for 5% tolerance.
Other Zener voltages and tolerances are
available upon request.
Mechanical data
Case: MELF Glass Case
Weight: approx. 0.25g
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
Maximum Ratings and Electrical Characterics
MDS0302003A
Page 1
Parameter
Symbol
Value
Unit
Zener Current (see Table "Characteristics ")
Power Dissipation at Tamb = 25C
P
tot
1.0
(1)
W
Thermal Resistance Junction to Am bient Air
R
JA
170
(1)
C/W
Junction Temperature
Tj
200
C
Storage Temperature Range
T
S
65 to +200
C
Note: (1) Valid provided that electrodes are kept at am bient temperature
Glass MELF
(LL35)
Dimensions in mm
0.022 (0.55)
0.205 (5.2)
0.189 (4.8)
0.102 (
2
.6)
0.094 (
2
.4)
Cathode Mark
MDS0302003A
Page 2
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
CZRL4728
3.3
76
10
400
1
100
1
1380
276
CZRL4729
3.6
69
10
400
1
100
1
1260
252
CZRL4730
3.9
64
9
400
1
50
1
1190
234
CZRL4731
4.3
58
9
400
1
10
1
1070
217
CZRL4732
4.7
53
8
500
1
10
1
970
193
CZRL4733
5.1
49
7
550
1
10
1
890
178
CZRL4734
5.6
45
5
600
1
10
2
810
162
CZRL4735
6.2
41
2
700
1
10
3
730
146
CZRL4736
6.8
37
3.5
700
1
10
4
660
133
CZRL4737
7.5
34
4
700
0.5
10
5
605
121
CZRL4738
8.2
31
4.5
700
0.5
10
6
550
110
CZRL4739
9.1
28
5
700
0.5
10
7
500
100
CZRL4740
10
25
7
700
0.25
10
7.6
454
91
CZRL4741
11
23
8
700
0.25
5
8.4
414
83
CZRL4742
12
21
9
700
0.25
5
9.1
380
76
CZRL4743
13
19
10
700
0.25
5
9.9
344
69
CZRL4744
15
17
14
700
0.25
5
11.4
304
61
CZRL4745
16
15.5
16
700
0.25
5
12.2
285
57
CZRL4746
18
14
20
750
0.25
5
13.7
250
50
CZRL4747
20
12.5
22
750
0.25
5
15.2
225
45
CZRL4748
22
11.5
23
750
0.25
5
16.7
205
41
CZRL4749
24
10.5
25
750
0.25
5
18.2
190
38
CZRL4750
27
9.5
35
750
0.25
5
20.6
170
34
CZRL4751
30
8.5
40
1000
0.25
5
22.8
150
30
CZRL4752
33
7.5
45
1000
0.25
5
25.1
135
27
CZRL4753
36
7
50
1000
0.25
5
27.4
125
25
CZRL4754
39
6.5
60
1000
0.25
5
29.7
115
23
CZRL4755
43
6
70
1500
0.25
5
32.7
110
22
CZRL4756
47
5.5
80
1500
0.25
5
35.8
95
19
CZRL4757
51
5
95
1500
0.25
5
38.8
90
18
CZRL4758
56
4.5
110
2000
0.25
5
42.6
80
16
CZRL4759
62
4
125
2000
0.25
5
47.1
70
14
CZRL4760
68
3.7
150
2000
0.25
5
51.7
65
13
CZRL4761
75
3.3
175
2000
0.25
5
56
60
12
CZRL4762
82
3
200
3000
0.25
5
62.2
55
11
CZRL4763
91
2.8
250
3000
0.25
5
69.2
50
10
CZRL4764
100
2.5
350
3000
0.25
5
76
45
9
V
R
(V)
at
Notes: (1) The Zener impedance is derived from the 1KHZ AC volt age which results when an AC current having an RMS value equal to
10% of the Zener current (IZTor IZK) is superim posed on IZT or IZK. Zener impedance is m easured at two points to insure a sharp knee on
the breakdown curve and to eliminate unstable units
(2) Valid provided that electrodes at a distance of 10mm from case are kept at am bient temperature
(3) Measured under thermal equilibrium and DC test condit ions.
Max reverse Leakage
Current
Surge
Current at
T
A
= 25C
Ir(mA)
Maximum
Regulator
Current
I
ZM
(mA)
(Note 2.)
I
R
(uA)
Type No.
Nominal
Zener
Voltage
at I
ZT
VZ (V)
(Note 3.)
Test
current
I
ZT
(mA)
Maximum Zener Impedance
(Note 1.)
Z
ZT
at I
ZT
(Ohm)
at
I
ZK
(mA)
Z
ZK
(Ohm)
Rating and Characteristic Curves (
)
CZRL4728 Thru CZRL4764
MDS0302003A
Page 3
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
CZRL4728~CZRL4764
0
0.2
0.8
1.0
0.6
0.4
0
100
200
P,
P
O
WER
DISSIP
AT
I
O
N
(W)
d
T , AMBIENT TEMPERATURE (C)
Fig. 1, Power Derating Curve
A
PDF 
ZIP