SMD Zener Diode
COMCHIP
SMD Diodes Specialist
CZRT5221B-HF Thru CZRT5267B-HF
Voltage: 2.4 to 39 Volts
Power: 350 mWatts
RoHS Device
Features
Halogen free.
Planar die construction
350mW power dissipation on FR-4 PCB
Ideally suited for automated assembly
process
General purpose, medium current
0.056(1.40)
0.047(1.20)
0.119(3.00)
0.110(2.80)
SOT-23
3
1
0.079(2.00)
0.071(1.80)
2
Mechanical data
Case: SOT-23, Molded plastic
Terminals: Solderable per MIL-STD-
202G,method 208
Polarity: See diagram below
Mounting position: Any
Marking: see table on page2
Weight: 0.0078 gram(approx.).
Single
0.004(0.10) max
0.020(0.50)
0.012(0.30)
0.008(0.20) min
0.041(1.05)
0.035(0.90)
0.006(0.15)
0.002(0.05)
0.100(2.55)
0.089(2.25)
Dimensions in inches and (millimeter)
Electrical Characteristics (TA=25°C, unless otherwise specified)
Parameter
Forward voltage drop at I
F
=10mA
Power dissipation (Notes A),T
A
= 25°C
Thermal resistance, junction to ambient air (Notes A)
Operating junction and storage temperature range
Symbol
V
F
P
D
R
θJA
T
J
Value
0.9
350
357
-65 to +150
Unit
V
mW
o
C/W
O
C
Notes:
A. Valid provided that device terminals are kept at ambient temperature.
B. Tested with pulses, Tp≤1.0mS.
REV:A
QW-JZ002
Page 1
Comchip Technology CO., LTD.
SMD Zener Diode
Electrical Characteristics(Ta = 25°C)
Zener Voltage
Part Number
Min.
CZRT5221B-HF
CZRT5222B-HF
CZRT5223B-HF
CZRT5225B-HF
CZRT5226B-HF
CZRT5227B-HF
CZRT5228B-HF
CZRT5229B-HF
CZRT5230B-HF
CZRT5231B-HF
CZRT5232B-HF
CZRT5234B-HF
CZRT5235B-HF
CZRT5236B-HF
CZRT5237B-HF
CZRT5239B-HF
CZRT5240B-HF
CZRT5241B-HF
CZRT5242B-HF
CZRT5243B-HF
CZRT5245B-HF
CZRT5246B-HF
CZRT5248B-HF
CZRT5250B-HF
CZRT5251B-HF
CZRT5252B-HF
CZRT5254B-HF
CZRT5255B-HF
CZRT5256B-HF
CZRT5257B-HF
CZRT5258B-HF
CZRT5259B-HF
CZRT5260B-HF
CZRT5261B-HF
CZRT5262B-HF
CZRT5263B-HF
CZRT5264B-HF
CZRT5265B-HF
CZRT5266B-HF
CZRT5267B-HF
2.28
2.38
2.57
2.85
3.14
3.42
3.71
4.09
4.47
4.85
5.32
5.89
6.46
7.13
7.79
8.65
9.50
10.45
11.40
12.35
14.25
15.20
17.10
19.00
20.90
22.80
25.65
26.60
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
57.00
58.90
64.60
71.25
VZ(V)@IZT
Nom.
2.4
2.5
2.7
3.0
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
28
30
33
36
39
43
47
51
56
60
62
68
75
Max.
2.52
2.63
2.84
3.15
3.47
3.78
4.10
4.52
4.94
5.36
5.88
6.51
7.14
7.88
8.61
9.56
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
29.40
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
63.00
65.10
71.40
78.75
Operating
Resistance
ZZT(Ohm)
Max.
30
30
30
30
28
24
23
22
19
17
11
7
5
6
8
10
17
22
30
13
16
17
21
25
29
33
41
44
49
58
70
80
93
105
125
150
170
185
230
270
IZT(mA)
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
9.5
8.5
7.8
7.0
6.2
5.6
5.2
5.0
4.5
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
2.1
2.0
1.8
1.7
Rising Operating
Resistance
ZZK(Ohm)
Max.
1200
1250
1300
1600
1600
1700
1900
2000
1900
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
1400
1500
1600
1400
IZK(mA)
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
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Max.
100
100
75
50
25
15
10
5.0
5.0
5.0
5.0
5.0
3.0
3.0
3.0
3.0
3.0
2.0
1.0
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
COMCHIP
SMD Diodes Specialist
Reverse Current
IR(uA)
VR(V)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
3.0
4.0
5.0
6.0
6.5
7.0
8.0
8.4
9.1
9.9
11
12
14
15
17
18
21
21
23
25
27
30
33
36
39
43
46
47
52
56
KC1
KC2
KC3
KC5
KG1
KG2
KG3
KG4
KG5
KE1
KE2
KE4
KE5
KF1
KF2
KF4
KF5
KH1
KH2
KH3
KH5
KJ1
KJ3
KJ5
KK1
KK2
KK4
KK5
KM1
KM2
KM3
KM4
KM5
KN1
KN2
KN3
KN4
KN5
KP1
KP2
Marking
Code
Note: 5% Standard Vz Tolerance
REV:A
QW-JZ002
Page 2
Comchip Technology CO., LTD.
SMD Zener Diode
COMCHIP
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CZRT5221B-HF Thru CZRT5267B-HF)
Fig.1 Typical forward voltage
1000
1000
100
10
Forward current(mA)
Fig.2 Typical leakage current
100
Leakage current(uA)
1
0.1
0.01
0.001
0.0001
+25°C
+150°C
0°
C
+7
5
5°C
-5°
C
10
+1
5
°C
+2
-55°C
1
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
0.00001
0
10
20
30
40
50
60
70
80
90
Forward Voltage(V)
Normal zener voltage(V)
Fig.3 Temperature coefficents
100
Temperature coefficient,(mA/°C)
0.6
Fig.4 Steady state power derating
T
A
= 25°C
0.5
Power dissipation(W)
0.4
0.3
0.2
0.1
10
1
10
Nominal zener voltage(V)
100
0
0
25
50
75
100
125
150
175
Temperature(°C)
REV:A
QW-JZ002
Page 3
Comchip Technology CO., LTD.
Microcontroller MCU
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