SMD Zener Diode
CZRM5221B-HF Thru CZRM5263B-HF
Voltage: 2.4 to 56 Volts
Power: 500 mWatts
RoHS Device
Halogen Free
Features
- Surface Device Type Mounting.
- Moisture Sensitivity Level 1.
- Clip bonding construction, good thermal capability.
- Ideally suited for automated assembly
processes.
0.028(0.70)
0.020(0.50)
0.067(1.70)
0.059(1.50)
SOD-123 Flat Lead
0.146(3.70)
0.130(3.30)
0.106(2.70)
0.098(2.50)
Mechanical data
- Case: SOD-123 Flat Lead,Molded plastic.
- Terminals: Solder Plated,solderable per
MIL-STD-750,method 2026.
- Polarity: Cathode band.
Dimensions in inches and (millimeter)
0.039(1.00)
0.031(0.80)
0.008(0.20)
0.002(0.05)
Circuit Diagram
Cathode
Anode
Maximum Ratings
(@Ta=25°C unless otherwise specified)
Parameter
Power Dissipation
Storage Temperature Range
Operating and Storage Temperature Range
Symbol
P
D
T
STG
T
OPR
Value
500
-65 to +150
-65 to +150
Unit
mW
°C
°C
Notes: 1. These ratings are limiting values above which the serviceability of the diode may be impaired.
2. Company reserves the right to improve product design , functions and reliability without notice.
Company reserves the right to improve product design , functions and reliability without notice.
QW-JZ005
REV: C
Page 1
Comchip Technology CO., LTD.
SMD Zener Diode
Electrical Characteristics
(Ta = 25°C)
Part Number
Min
V
Z
@ I
ZT
(Volts)
Nom
Max
Z
ZT
@
I
ZT
(Ohm)
Max
I
ZT
(mA)
Z
ZK
@ I
ZK
(Ohm)
Max
I
ZK
(mA)
I
R
@ V
R
(μA)
Max
V
R
(V)
Marking
Code
Z2V4
Z2V5
Z2V7
Z2V8
Z3V0
Z3V3
Z3V6
Z3V9
Z4V3
Z4V7
Z5V1
Z5V6
Z6V0
Z6V2
Z6V8
Z7V5
Z8V2
Z8V7
Z9V1
Z10V
Z11V
Z12V
Z13V
Z14V
Z15V
Z16V
Z17V
Z18V
Z19V
Z20V
CZRM5221B-HF
CZRM5222B-HF
CZRM5223B-HF
CZRM5224B-HF
CZRM5225B-HF
CZRM5226B-HF
CZRM5227B-HF
CZRM5228B-HF
CZRM5229B-HF
CZRM5230B-HF
CZRM5231B-HF
CZRM5232B-HF
CZRM5233B-HF
CZRM5234B-HF
CZRM5235B-HF
CZRM5236B-HF
CZRM5237B-HF
CZRM5238B-HF
CZRM5239B-HF
CZRM5240B-HF
CZRM5241B-HF
CZRM5242B-HF
CZRM5243B-HF
CZRM5244B-HF
CZRM5245B-HF
CZRM5246B-HF
CZRM5247B-HF
CZRM5248B-HF
CZRM5249B-HF
CZRM5250B-HF
2.28
2.38
2.57
2.66
2.85
3.14
3.42
3.71
4.09
4.47
4.85
5.32
5.70
5.89
6.46
7.13
7.79
8.27
8.65
9.5
10.45
11.40
12.35
13.30
14.25
15.20
16.15
17.10
18.05
19.00
2.4
2.5
2.7
2.8
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.0
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
2.52
2.63
2.84
2.94
3.15
3.47
3.78
4.10
4.52
4.94
5.36
5.88
6.30
6.51
7.14
7.88
8.61
9.14
9.56
10.50
11.55
12.60
13.65
14.70
15.75
16.80
17.85
18.90
19.95
21.00
30
30
30
30
29
28
24
23
22
19
17
11
7
7
5
6
8
8
10
17
22
30
13
15
16
17
19
21
23
25
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
9.5
9.0
8.5
7.8
7.4
7.0
6.6
6.2
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
1600
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
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
0.25
0.25
0.25
0.25
0.25
100
100
75
75
50
25
15
10
5
5
5
5
5
5
3
3
3
3
3
3
2
1
0.5
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
1.0
1.0
1.0
2.0
2.0
3.0
3.5
4.0
5.0
6.0
6.5
6.5
7.0
8.0
8.4
9.1
9.9
10
11
12
13
14
14
15
Company reserves the right to improve product design , functions and reliability without notice.
QW-JZ005
REV: C
Page 2
Comchip Technology CO., LTD.
SMD Zener Diode
Electrical Characteristics
(Ta = 25°C)
Part Number
Min
V
Z
@ I
ZT
(Volts)
Nom
Max
Z
ZT
@
I
ZT
(Ohm)
Max
I
ZT
(mA)
Z
ZK
@ I
ZK
(Ohm)
Max
I
ZK
(mA)
I
R
@ V
R
(μA)
Max
V
R
(V)
Marking
Code
Z22V
Z24V
Z25V
Z27V
Z28V
Z30V
Z33V
Z36V
Z39V
Z43V
Z47V
Z51V
Z56V
CZRM5251B-HF
CZRM5252B-HF
CZRM5253B-HF
CZRM5254B-HF
CZRM5255B-HF
CZRM5256B-HF
CZRM5257B-HF
CZRM5258B-HF
CZRM5259B-HF
CZRM5260B-HF
CZRM5261B-HF
CZRM5262B-HF
CZRM5263B-HF
20.90
22.80
23.75
25.65
26.60
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
22
24
25
27
28
30
33
36
39
43
47
51
56
23.10
25.20
26.25
28.35
29.40
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
29
33
35
41
44
49
58
70
80
93
105
125
150
5.6
5.2
5.0
4.6
4.5
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
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
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
17
18
19
21
21
23
25
27
30
33
36
39
43
Notes: 1. The zener voltage (V
Z
) is tested under pulse condition of 15mS.
The measured V
Z
is guaranteed to be within specification with device junction in thermal equilibrium.
2. The device numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
3. The zener impedance is derived from the 60-cycle ac voltage, which results when an ac current having an rms value equal
to 10% of the dc zener current (I
ZT
or I
ZK
) is superimposed to I
ZT
or I
ZK
.
4. Company reserves the right to improve product design , functions and reliability without notice.
Company reserves the right to improve product design , functions and reliability without notice.
QW-JZ005
REV: C
Page 3
Comchip Technology CO., LTD.
SMD Zener Diode
RATING AND CHARACTERISTIC CURVES (
CZRM5221B-HF Thru. CZRM5263B-HF
)
Fig.1 - Typical Forward Voltage
1000
1000
Fig.2 - Effect Of Zener Voltage
On Zener Impedance
T
J
=25°C
I
Z(AC)
=0.1 I
Z(AC)
F=1k Hz
100
Dynamic Zener Impedance, (Ω)
0.9
1.0
1.1
Forward Current, (mA)
100
150°C
75°C
5°C
25°C
10
10
1
0.4
0.5
0.6
0.7
0.8
1.2
1
1
10
100
Forward Voltage, (V)
Nominal Zener Voltage, (V)
Fig.3 - Power Dissipation
VS.
Ambient Temp.
1000
1000
Fig.4 - Typical Capacitance
T
A
=25°C
0V BIAS
1V BIAS
Power Dissipation, (mW)
750
Capacitance, (pF)
100
BIAS AT
50% Of Vz Nom
500
10
250
0
0
25
50
75
100
125
150
1
1
10
100
Temperature (°C)
Nominal Zener Voltage, (V)
Company reserves the right to improve product design , functions and reliability without notice.
QW-JZ005
REV: C
Page 4
Comchip Technology CO., LTD.
SMD Zener Diode
RATING AND CHARACTERISTIC CURVES (
CZRM5221B-HF Thru. CZRM5263B-HF
)
Fig.5 - Zener Breakdown Characteristics
100
T
A
= 25°C
Fig.6 - Zener Breakdown Characteristics
100
T
A
= 25°C
Zener Current, (mA)
1
Zener Current, (mA)
10
10
1
0.1
0.1
0.01
0
2
4
6
8
10
12
0.01
10
30
50
70
Zener Voltage, (V)
Zener Voltage, ( V )
Fig.7 - Typical Leakage Current
1000
100
Leakage Current, (µA)
10
1
+150°C
0.1
0.01
+25°C
0.001
0.0001
-55°C
0.00001
0
10
20
30
40
50
60
70
80
Nominal Zener Voltage, (V)
Company reserves the right to improve product design , functions and reliability without notice.
QW-JZ005
REV: C
Page 5
Comchip Technology CO., LTD.
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