1N5221B Series
ELECTRICAL CHARACTERISTICS (T = 25°C unless
otherwise noted, Based on dc measurements at thermal
A
I
I
F
equilibrium; lead length = 3/8″; thermal resistance of heat sink
= 30°C/W, V = 1.1 V Max @ I = 200 mA for all types)
F
F
Symbol
Parameter
V
I
Reverse Zener Voltage @ I
Reverse Current
Z
ZT
V
Z
V
R
V
ZT
I
ZT
V
F
R
Z
Maximum Zener Impedance @ I
ZT
ZK
ZT
ZK
I
I
Reverse Current
Z
ZK
Maximum Zener Impedance @ I
I
Reverse Leakage Current @ V
Breakdown Voltage
R
R
V
R
I
F
Forward Current
Zener Voltage Regulator
V
F
Forward Voltage @ I
F
q
Maximum Zener Voltage Temperature Coefficient
VZ
ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted, Based on dc measurements at thermal equilibrium; lead
A
length = 3/8″; thermal resistance of heat sink = 30°C/W, V = 1.1 V Max @ I = 200 mA for all types)
F
F
Zener Voltage (Note 3.)
Zener Impedance (Note 4.)
Leakage Current
@ V
q
VZ
V (Volts)
Z
@ I
Z
ZT
@ I
Z
ZK
@ I
I
R
(Note 5.)
ZT
ZT
ZK
R
Device
Device
Min
Nom
Max
mA
W
W
mA
µA
Volts
%/5C
(Note 2.)
Marking
1N5221B
1N5222B
1N5223B
1N5224B
1N5225B
1N5221B
1N5222B
1N5223B
1N5224B
1N5225B
2.28
2.375
2.565
2.66
2.4
2.5
2.7
2.8
3.0
2.52
2.625
2.835
2.94
20
20
20
20
20
30
30
30
30
29
1200
1250
1300
1400
1600
0.25
0.25
0.25
0.25
0.25
100
100
75
75
50
1
1
1
1
1
–0.085
–0.085
–0.08
–0.08
–0.075
2.85
3.15
1N5226B
1N5227B
1N5228B
1N5229B
1N5230B
1N5226B
1N5227B
1N5228B
1N5229B
1N5230B
3.14
3.42
3.71
4.09
4.47
3.3
3.6
3.9
4.3
4.7
3.46
3.78
4.09
4.51
4.93
20
20
20
20
20
28
24
23
22
19
1600
1700
1900
2000
1900
0.25
0.25
0.25
0.25
0.25
25
15
10
5
1
1
1
1
2
–0.07
–0.065
–0.06
±0.055
±0.03
5
1N5231B
1N5232B
1N5233B
1N5234B
1N5235B
1N5231B
1N5232B
1N5233B
1N5234B
1N5235B
4.85
5.32
5.7
5.89
6.46
5.1
5.6
6.0
6.2
6.8
5.35
5.88
6.3
6.51
7.14
20
20
20
20
20
17
11
7
7
5
1600
1600
1600
1000
750
0.25
0.25
0.25
0.25
0.25
5
5
5
5
3
2
3
3.5
4
+ 0.03
0.038
0.038
0.045
0.05
5
2. TOLERANCE
The JEDEC type numbers shown indicate a tolerance of ±5%.
3. ZENER VOLTAGE (V ) MEASUREMENT
Z
The zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T ) at 30°C ± 1°C and 3/8″ lead
L
length.
4. ZENER IMPEDANCE (Z ) DERIVATION
Z
Z
ZT
and Z are measured by dividing the ac voltage drop across the device by the ac current applied. The specified limits are for I
=
Z(ac)
ZK
0.1 I
with the ac frequency = 60 Hz.
Z(dc)
5. TEMPERATURE COEFFICIENT (q ) *
VZ
Test conditions for temperature coefficient are as follows:
A. I = 7.5 mA, T = 25°C, T = 125°C (1N5221B through 1N5242B)
ZT
1
2
B. I = Rated I , T = 25°C, T = 125°C (1N5243B through 1N5281B)
ZT
ZT
1
2
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temperature.
* For more information on special selections contact your nearest ON Semiconductor representative.
http://onsemi.com
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