Page1
Parameter
Power Dissipation (Note A) at 75oC
Peak Forward Surge Current Surge, 8.3ms Single
Half Sine-Wave Superimposed on Rated Load
(JEDEC Method) (Note B)
Operating Junction and Storage Temperature Range
mW
A
IFSM
PD
oC
www.comchiptech.com
UnitsValueSymbols
Tj
500
4
-55 to +150
Case: SOD-123, Molded Plastic
Terminals: Solderable per MIL-STD-202, Method 208
Polarity: See Diagram Below
Mounting position: Any
Approx. Weight: 0.008 gram
Mechanical Data:
Maximum Ratings and Electrical Characterics
Planar Die Constructions
500mW Power Dissipation
Zener Voltages from 2.4V ~ 39V
Ideally Suited for Automated Assembly Processes
Features:
Voltage: 2.4 ~ 39 Volts
Power: 500 mW
CZRW5221B-G thru CZRW5259B-G
Surface Mount Zener Diodes
Notes:
A. Mounted on 5.0mm2(.013mm thick) land areas.
B. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.
“-G” suffix designated RoHS compliant version
SOD-123
.154 (3.90)
.141 (3.60)
.110 (2.80)
.098 (2.50)
.071 (1.80)
.055 (1.40)
.028 (0.70)
.019 (0.50)
.005 (.12) Max.
.008 (0.20) Max.
.016 (.40) Min.
.053 (1.35)
.037 (0.95)
Dimensions in inches and (millimeters)
Page2
www.comchiptech.com
CZRW5221B-G thru CZRW5259B-G
Surface Mount Zener Diodes
“-G” suffix designated RoHS compliant version
Maximum Ratings and Electrial Characterics
(TA=25 unless otherwise noted) VF=1.2V, IF=100mA for all types
I
ZM
@ T
A
Nom. V Min. V Max. V Ohm mA Ohm mA nA V mA
CZRW5221B-G 2.4 2.28 2.52 30 20 1200 0.25 100 1 188
CZRW5222B-G 2.5 2.38 2.63 30 20 1250 0.25 100 1 180
CZRW5223B-G 2.7 2.57 2.84 30 20 1300 0.25 75 1 167
CZRW5225B-G 3 2.85 3.15 30 20 1600 0.25 50 1 150
CZRW5226B-G 3.3 3.14 3.47 28 20 1600 0.25 25 1 138
CZRW5227B-G 3.6 3.42 3.78 24 20 1700 0.25 15 1 126
CZRW5228B-G 3.9 3.71 4.1 23 20 1900 0.25 10 1 115
CZRW5229B-G 4.3 4.09 4.52 22 20 2000 0.25 5 1 106
CZRW5230B-G 4.7 4.47 4.94 19 20 1900 0.25 5 2 97
CZRW5231B-G 5.1 4.85 5.36 17 20 1600 0.25 5 2 89
CZRW5232B-G 5.6 5.32 5.88 11 20 1600 0.25 5 3 81
CZRW5234B-G 6.2 5.89 6.51 7 20 1000 0.25 5 4 73
CZRW5235B-G 6.8 6.46 7.14 5 20 750 0.25 3 5 67
CZRW5236B-G 7.5 7.13 7.88 6 20 500 0.25 3 6 61
CZRW5237B-G
CZRW5238B-G
8.2 7.79 8.61 8 20 500 0.25 3 6 58
8.7 8.27 9.14 8 20 500 0.25 55
CZRW5239B-G 9.1 8.65 9.56 10 20 600 0.25 3
3
6.5
6.5
50
CZRW5240B-G 10 9.5 10.5 17 20 600 0.25 3 8 45
CZRW5241B-G 11 10.45 11.55 22 20 600 0.25 3 8.4 41
CZRW5242B-G 12 11.4 12.6 30 2 0 600 0.25 2 9.1 3 8
CZRW5243B-G 13 12.35 13.65 13 9.5 600 0.25 1 9.9 35
CZRW5245B-G 15 14.25 15.75 16 8.5 600 0.25 0.5 11 30
CZRW5246B-G 16 15.2 16.8 17 7.8 600 0.25 0.1 12 28
CZRW5248B-G 18 17.1 18.9 21 7 600 0.25 0.1 14 25
CZRW5250B-G 20 19 21 25 6.2 600 0.25 0.1 15 23
CZRW5251B-G 22 20.9 23.1 29 5.6 600 0.25 0.1 17 21
CZRW5252B-G 24 22.8 25.2 33 5.2 600 0.25 0.1 18 19.1
CZRW5254B-G 27 25.65 28.35 41 5 600 0.25 0.1 21 16.8
CZRW5255B-G 28 26.6 29.4 44 4.5 600 0.25 0.1 21 16.2
CZRW5256B-G 30 28.5 31.5 49 4.2 600 0.25 0.1 23 15.1
CZRW5257B-G 33 31.35 34.65 58 3.8 700 0.25 0.1 25 13.8
CZRW5258B-G 36 34.2 37.8 70 3.4 700 0.25 0.1 27 12.6
CZRW5259B-G 39 37.05 40.95 80 3.2 800 0.25 0.1 30 11.6
Max Reverse
Leakage Current Zener
Current
500 mWatts Zener Diodes
V
Z
@ I
ZT
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
Max. Zener ImpedanceNominal Zener Voltage
Part Number
I
R
@ V
R
NOTE:
1. Tolerance and T ype Number Designation. The type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
2. Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.
B. Matched sets.
3. Zener V oltage (V
Z
) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T
L
) at 30
O
C, from the diode body .
4. Zener Impedance (Z
Z
) Derivation. 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 on I
ZT
or I
ZK
.
5. Surge Current (I
R
) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine
wave pulse of 1/120 second duration superimposed on the test current, I
ZT
, per JEDEC registration; however, actual device capability is as described in Figure 5.
NOTE:
1. Tolerance and T ype Number Designation. The type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
2. Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.
B. Matched sets.
3. Zener V oltage (V
Z
) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T
L
) at 30
O
C, from the diode body .
4. Zener Impedance (Z
Z
) Derivation. 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 on I
ZT
or I
ZK
.
5. Surge Current (I
R
) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine
wave pulse of 1/120 second duration superimposed on the test current, I
ZT
, per JEDEC registration; however, actual device capability is as described in Figure 5.
Page3
www.comchiptech.com
CZRW5221B-G thru CZRW5259B-G
Surface Mount Zener Diodes
“-G” suffix designated RoHS compliant version
TYPICAL REVERSE CURRENT
TEMPERATURE COEFFICIENT,mV /C
)
o
NOMINAL ZENER VOLTAGE, Volts
-1
0
1
2
3
4
5
6
7
8
12111098765432
-2
-3
STEAD Y S TAT E POWER DERA TING
100101
1000
100
10
1
IZ=1mA
5mA
20 mA
DYNAMIC IMPEDANCE,
NORMAL ZENER VOLTAGE, Volts
T
J
=25 C
O
I
Z(AC)=0.1
I
F=1 kHZ
Z(DC)
FORW
ARD CURRENT, mA
1.21.11.00.90.80.70.60.50.4
1000
100
10
1
75 C
O
5C
O
25 C
O
150 C
O
CAPACITANCE, pF
NOMINAL ZENER VOLTAGE, Volts
T=25C
A
o
100
10
1
NOMINAL ZENER VOLTAGE, Volts
TEMPERATURE COEFFICIENT,mV/ C)
o
10 100
100
1000
100
10
1101
BIAS AT
50% OF VZNOM
0VBIAS
1VBIAS
CAPACITANCE, pF
T=25C
A
o
100
10
1
NOMINAL ZENER VOLTAGE, Volts
TEMPERATURE COEFFICIENT,mV/ C)
o
TEMPERATURE ( C)
o
POWER DISSIPATION, Watts
1.2
1.0
0.8
0.6
0.4
0.2
0150125100755025
P
DV
.
S
.T
A
155
TYPICAL FORW ARD VOL T AGE
FORWARD VOLTAGE, Volts
Page4
www.comchiptech.com
CZRW5221B-G thru CZRW5259B-G
Surface Mount Zener Diodes
“-G” suffix designated RoHS compliant version
ZENER VOL T AGE V.S. ZENER CURRENT
90
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001 80706050403020100
LEAKAGE CURRENT ( A)
NOMINAL ZENER VOLTAGE, Vlots
+150 C
O
+25 C
O
-55 C
O
12
100
10
1
0.1
0.01 1086420
ZENER CURRENT,mA
ZENER VOLTAGE, Volts
T =25 C
A
o
100
10
1
0.1
0.01 10 30 50 70 90
T=25C
A
o
ZENER VOLTAGE, Volts
ZENER VOL T AGE V.S. ZENER CURRENT
ZENER CURRENT,mA
