Voltage: 2.4 - 39 Volts
Power: 500mWatts
CZRT 5221 THRU 5259
CZRT 5221 THRU 5259
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
COMCHIP
MDS0209005A
Page 1
Features
Planar Die construction
500mW Power Dissipation
Zener Voltages from 2.4V 39V
Ideally Suited for Automated Assembly Processes
Mechanical Data
Case: SOT-23, Plastic
Terminals: Solderable per NIL-STD-202, Method 208
Approx. Weight: 0.008 gram
Parameter
Symbol
Value
Units
Power Disspation (
Notes A
) at 75
C
P
D
500
mW
Peak Forward Surge Current, 8.3ms single half sine-ware
superimposed on rate load (
JEDEC method
)
(Notes B
)
I
FSM
4.0
Amps
Operating Junction and Storage Temperature Range
T
J
-55 to +15C
C
Maximum Ratings and Thermal Characteristics
B. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle = 4 pulses minute maximum.
Notes:
A. Mounted on 5.0 mm2(.013mm thick) land areas.
.037(0.95) .037(0.95)
.00
6
(0
.
1
5
)
max.
.1
19
(3.
0
)
.0
20
(0.
5
)
.0
20
(0.
5
)
Top View
.10
3
(2.6)
.00
6
(
0
.15)
.0
4
4
(1
.
1
0
)
.110 (2.8)
.0
47
(1
.
2
0
)
.00
2
(0
.
0
5)
.0
86
(2.
2
)
.0
3
5
(0
.
9
0
)
.0
20
(0.
5
)
.056 (
1
.4
0)
SOT-23
Dimensions in inches (millimeters)
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
COMCHIP
MDS0209005A
Page 2
CZRT 5221 THRU 5259
Max. Zener
current
I
ZM
@ T
a
Nom.V Min.V
Max.V
mA
mA
nA
V
mA
CZRT5221
2.4
2.28
2.52
30
20
1200
0.25
100
1
188
CZRT5222
2.5
2.38
2.63
30
20
1250
0.25
100
1
180
CZRT5223
2.7
2.57
2.84
30
20
1300
0.25
75
1
167
CZRT5225
3
2.85
3.15
30
20
1600
0.25
50
1
150
CZRT5226
3.3
3.14
3.47
28
20
1600
0.25
25
1
138
CZRT5227
3.6
3.42
3.78
25
20
1700
0.25
15
1
126
CZRT5228
3.9
3.71
4.10
23
20
1900
0.25
10
1
115
CZRT5229
4.3
4.09
4.52
22
20
2000
0.25
5
1
106
CZRT5230
4.7
4.47
4.94
19
20
1900
0.25
5
2
97
CZRT5231
5.1
4.85
5.36
17
20
1600
0.25
5
2
89
CZRT5232
5.6
5.32
5.88
11
20
1600
0.25
5
3
81
CZRT5234
6.2
5.89
6.51
7
20
1000
0.25
5
4
73
CZRT5235
6.8
6.46
7.14
5
20
750
0.25
3
5
67
CZRT5236
7.5
7.13
7.88
6
20
500
0.25
3
6
61
CZRT5237
8.2
7.79
5.61
8
20
500
0.25
3
6
55
CZRT5239
9.1
8.65
9.56
10
20
600
0.25
3
6.5
50
CZRT5240
10
9.50
10.50
17
20
600
0.25
3
8
45
CZRT5241
11
10.45
11.55
22
20
600
0.25
3
8.4
41
CZRT5242
12
11.40
12.60
30
20
600
0.25
2
9.1
38
CZRT5243
13
12.35
13.65
13
9.5
600
0.25
1
9.9
35
CZRT5245
15
14.25
15.75
16
8.5
600
0.25
0.5
11
30
CZRT5246
16
15.20
16.80
17
7.8
600
0.25
0.1
12
28
CZRT5248
18
17.10
18.90
21
7
600
0.25
0.1
14
25
CZRT5250
20
19.00
21.00
25
6.2
600
0.25
0.1
15
23
CZRT5251
22
20.90
23.10
29
5.6
600
0.25
0.1
17
21
CZRT5253
24
22.80
25.20
33
5.2
600
0.25
0.1
18
19.1
CZRT5254
27
25.65
28.35
41
5
600
0.25
0.1
21
16.8
CZRT5255
28
26.60
29.40
44
4.5
600
0.25
0.1
21
16.2
CZRT5256
30
28.50
31.50
49
4.2
600
0.25
0.1
23
15.1
CZRT5257
33
31.35
34.65
58
3.8
700
0.25
0.1
25
13.8
CZRT5258
36
34.20
37.80
70
3.4
700
0.25
0.1
27
12.6
CZRT5259
39
37.05
40.95
80
3.2
800
0.25
0.1
30
11.6
Part Number
-0.070
-0.065
-0.060
Max. Zener Impedance
I
R
@ V
R
Typical Temp.
Coefficient
V
z
@ I
ZT
Z
ZT
@ I
ZT
Z
zk
@ I
zk
Max Reverse
Leakage Current
T
C
Max. Zener Impedance
+0.038
0.030
0.030
+0.038
-0.055
+0.045
+0.050
+0.058
+0.079
+0.082
+0.062
+0.065
+0.068
+0.075
+0.091
+0.091
+0.086
+0.086
+0.087
+0.087
Electrical Characteristics
(TA = 25 C unless otherwise noted) V
F
=1.2V max, I
F
=100mA for all types.)
500 mWatts Zener Diodes
+0.089
+0.090
+0.082
+0.083
+0.084
+0.085
+0.076
+0.077
5. Surge Current (IR) Non-Repetitive. The rating listed in the el ectrical characteristics table is maximum peak, non-repetit ive, reverse surge current of 1/2
square wave or equivalent sine wave pulse of 1/120 second duration superimposed on t he test current, IZT, per JEDEC regis tration; however, actual
device capability is as described in Figure 5.
NOTE:
+0.092
1.Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener voltage of 5% for 'B' and 10% for 'A
4. Zener Impedance (ZZ) Derivation. The zener impedanc e is derived from the 60 cycle ac voltage, which resul ts when an AC current having an rms
value equal to 10% of the dc zener current (IZT or IZK) is superimposed on IZT or IZK
2.Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage t olerances.
B. Matched sets.
3. Zener Voltage (VZ) Measurement. Guarantees the zener volt age when measured at 90 seconds while maintaining the lead the t emperature (TL) at
30C, from the diode body.
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
COMCHIP
MDS0209005A
Page 3
C Z R T 5 2 2 1 T H R U 5 2 5 9
TYPICAL REVERSE CURRENT
TEMPERA
TURE
COEFFICIENT
,mV
/
C
)
o
NOMINAL ZENER VOLTAGE, Volts
-1
0
1
2
3
4
5
6
7
8
12
11
10
9
8
7
6
5
4
3
2
-2
-3
100
10
1
1000
100
10
1
IZ = 1 mA
5 mA
20 mA
DYNAMIC
IMPEDANCE,
W
NORMAL ZENER VOLTAGE, Volts
T
J
=25 C
O
I
Z(AC)=0.1
I
F=1 kHZ
Z(DC)
FOR
W
ARD
CURRENT
,m
A
TYPICAL FORWARD VOLTAGE
FORWARD VOLTAGE, Volts
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
1000
100
10
1
75 C
O
5 C
O
25 C
O
150 C
O
TYPICAL CAPACITANCE
100
1000
100
10
1
10
1
BIAS AT
50% OF VZ NOM
0 V BIAS
1 V BIAS
CAP
ACIT
ANCE,
pF
NOMINAL ZENER VOLTAGE, Volts
T =25 C
A
o
100
10
1
NOMINAL ZENER VOLTAGE, Volts
TEMPERA
TURE
COEFFICIENT
,mV
/
C
)
o
10
100
TEMPERATURE ( C)
o
POWER
DISSIP
A
TION,
W
atts
STEADY STATE POWER DERATING
1.2
1.0
0.8
0.6
0.4
0.2
0
150
125
100
75
50
25
P
D V
.
S
. T
A
155
Surface Mount Zener Diodes
www.comchip.com.tw
COMCHIP
COMCHIP
MDS0209005A
Page 4
C Z R T 5 2 2 1 T H R U 5 2 5 9
ZENER VOLTAGE V.S. ZENER CURRENT
TYPICAL LEAKGE CURRENT
90
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001
80
70
60
50
40
30
20
10
0
LEAKAGE
CURRENT
(
A
)
m
NOMINAL ZENER VOLTAGE, Vlots
+150 C
O
+25 C
O
-55 C
O
12
100
10
1
0.1
0.01
10
8
6
4
2
0
ZENER
CURRENT
,m
A
ZENER VOLTAGE, Volts
T =25 C
A
o
100
10
1
0.1
0.01
10
30
50
70
90
T =25 C
A
o
ZENER VOLTAGE, Volts
ZENER VOLTAGE V.S. ZENER CURRENT
ZENER
CURRENT
,m
A
PDF 
ZIP