SMD Zener Diode
CZRA4728-G Thru CZRA4764-G
Voltage: 3.3 to 100 Volts
Power: 1.0 Watts
RoHS Device
Features
- Glass passivated chip.
- Low leakage.
- Built-in strain relief
- Low inductance
- High peak reverse power dissipation
- For use in stabilizing and clipping with
High power rating
0.179(4.55)
0.161(4.10)
SMA/DO-214AC
0.064(1.63)
0.048(1.23)
0.109(2.76)
0.099(2.51)
Mechanical data
- Epoxy: UL 94V-0 rate flame retardant.
- Case: SMA/DO-214AC, molded plastic.
- Terminals: solderable per MIL-STD-750,
method 2026.
- Polarity: Color band denotes cathode end
execpt bipolar.
- Weight: 0.069 grams (approx.)
0.089(2.26)
0.077(1.96)
0.059(1.51)
0.030(0.75)
0.206(5.22)
0.192(4.87)
0.012(0.30)
0.006(0.15)
0.008(0.20)
0.000(0.00)
Dimensions in inches and (millimeter)
Circuit diagram
Maximum Ratings
(T =25°C, unless otherwise noted)
A
Parameter
DC power dissipation at T
L
= 50°C (note.1)
Maximum forward voltage at I
F
= 200mA
Maximum thermal resistance junction to ambeint air (note 2)
Junction temperature range
Storge temperature range
Note:
Symbol
P
D
V
F
R
θJA
T
J
T
STG
Value
1000
1.2
170
-55 to +175
-55 to +175
Unit
mW
V
K/W
°C
°C
1.T
L
= Lead temperature at 3/8” (9.5mm) from body.
2. Valid provided that leads are kept at ambient temperature at distance of 10mm form case.
Company reserves the right to improve product design , functions and reliability without notice.
QW-BZ004S
REV:A
Page 1
Comchip Technology CO., LTD.
SMD Zener Diode
Electrical Characteristics
( at T
Marking
Code
V
Z
@I
ZT
(V)
I
ZT
(mA)
Z
ZT
@ I
ZT
(Ω)
Z
ZK
@ I
ZK
(Ω)
I
ZK
(mA)
(uA)
A
= 25°C unless otherwise noted)
Nominal Zener Voltage
Part Number
Maximum Zener Impedance
Maximum
Reverse Leakage
Current
I
R @
V
R
(V)
Maximum
Surge
Current
I
RM
(mApk)
CZRA4728-G
CZRA4729-G
CZRA4730-G
CZRA4731-G
CZRA4732-G
CZRA4733-G
CZRA4734-G
CZRA4735-G
CZRA4736-G
CZRA4737-G
CZRA4738-G
CZRA4739-G
CZRA4740-G
CZRA4741-G
CZRA4742-G
CZRA4743-G
CZRA4744-G
CZRA4745-G
CZRA4746-G
CZRA4747-G
CZRA4748-G
CZRA4749-G
CZRA4750-G
CZRA4751-G
CZRA4752-G
CZRA4753-G
CZRA4754-G
CZRA4755-G
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
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
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
10
10
9
9
8
7
5
2
3.5
4
4.5
5
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
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
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
100
100
50
10
10
10
10
10
5.0
5.0
5.0
0.5
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
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
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
1370
1255
1160
1050
960
885
805
730
660
605
550
500
454
414
380
344
305
285
250
225
205
190
170
150
135
125
115
110
Company reserves the right to improve product design , functions and reliability without notice.
QW-BZ004S
REV:A
Page 2
Comchip Technology CO., LTD.
SMD Zener Diode
Electrical Characteristics
( at T
Marking
Code
V
Z
@I
ZT
(V)
I
ZT
(mA)
Z
ZT
@ I
ZT
(Ω)
Z
ZK
@ I
ZK
(Ω)
I
ZK
(mA)
(uA)
A
= 25°C unless otherwise noted)
Nominal Zener Voltage
Part Number
Maximum Zener Impedance
Maximum
Reverse Leakage
Current
I
R @
V
R
(V)
Maximum
Surge
Current
I
RM
(mApk)
CZRA4756-G
4756
4757
4758
4759
4760
4761
4762
4763
4764
47
51
56
62
68
75
82
91
100
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
80
95
110
125
150
175
200
250
350
1500
1500
2000
2000
2000
2000
3000
3000
3000
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
76.0
95
90
80
70
65
60
55
50
45
CZRA4757-G
CZRA4758-G
CZRA4759-G
CZRA4760-G
CZRA4761-G
CZRA4762-G
CZRA4763-G
CZRA4764-G
Notes:
1. The type number listed have a standard tolerance on the nominal zener voltage of ± 5%.
2. The reverse surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on I
ZT
per JEDEC
Company reserves the right to improve product design , functions and reliability without notice.
QW-BZ004S
REV:A
Page 3
Comchip Technology CO., LTD.
SMD Zener Diode
RATING AND CHARACTERISTIC CURVES (CZRA4728-G Thru. CZRA4764-G)
Fig.1 - Power Temperature Derating Curve
Temperature Coefficient,
ΘVz
(mV/°C)
1.0
100
Fig.2 - Temperature Coefficients
v.s. Zener Voltage
Max. Power Dissipation, P
D
(W)
0.8
0.6
Range
10
0.4
0.2
0
1
0
25
50
75
100
125
150
1
100
Lead Temperature, T
L
(°C)
Zener Voltage,Vz (V)
Fig.3 - Typical
Thermal Resistance
v.s.
Lead Length
175
150
Junction to Lead Thermal
Resistance ,
Θ
JL
(°C/W)
125
100
75
50
25
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
Lead Length to Heatsink, L (inches)
Fig.4 - Maximum Surge Power
100
Rectangular waveform
T
J
=25°C prior to initial pulse
Peak Surge Power, P
pk
(W)
5% duty cycle
11V-91V Non-Repetitive
10
10% duty cycle
20% duty cycle
1
0.01
0.1
1
10
100
1000
Pulse Width, PW (ms)
Company reserves the right to improve product design , functions and reliability without notice.
QW-BZ004S
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Page 4
Comchip Technology CO., LTD.
SMD Zener Diode
Reel Taping Specification
P
0
P
1
d
Index hole
E
F
B
P
A
W
C
12
0
o
D
2
D
1
D
W
1
Trailer
.......
.......
160mm (min)
Device
.......
.......
.......
.......
Leader
.......
.......
400mm (min)
End
Start
Direction of Feed
SYMBOL
SMA/DO-214AC
A
2.79
±
0.10
B
5.33
±
0.10
C
2.36
±
0.10
0.093
±
0.004
d
1.75
±
0.10
0.069
±
0.004
D
330MAX
13.00MAX
D
1
50.0 MIN.
1.969 MIN.
D
2
13.0
±
0.2
0.512
±
0.008
(mm)
(inch)
0.110
±
0.004 0.210
±
0.004
SYMBOL
SMA/DO-214AC
E
1.75
±
0.10
0.069
±
0.004
F
5.50
±
0.05
0.216
±
0.002
P
4.00
±
0.10
0.157
±
0.004
P
0
4.00
±
0.10
0.157
±
0.004
P
1
2.00
±
0.05
0.079
±
0.002
W
12.0
±
0.30
0.472
±
0.012
W
1
18.4 MAX.
0.724 MAX
(mm)
(inch)
Company reserves the right to improve product design , functions and reliability without notice.
QW-BZ004S
REV:A
Page 5
Comchip Technology CO., LTD.
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