LL5221B~LL5271B
Zener diode
Features
1. High reliability
2. Very sharp reverse characteristic
3. Low reverse current level
4. V
Z
-tolerance±5%
Applications
Voltage stabilization
Absolute Maximum Ratings
T
j
=25℃
Parameter
Power dissipation
Z-current
Junction temperature
Storage temperature range
Test Conditions
T
amb
≤75℃
Type
Symbol
P
V
I
Z
T
j
T
stg
Value
500
P
V
/V
Z
200
-65~+200
Unit
mW
mA
℃
℃
Maximum Thermal Resistance
T
j
=25℃
Parameter
Junction ambient
Test Conditions
I=9.5mm(3/8”) T
L
=constant
Symbol
R
thJA
Value
300
Unit
K/W
Electrical Characteristics
T
j
=25℃
Parameter
Forward voltage
Test Conditions
I
F
=200mA
Type
Symbol
V
F
Min
Typ
Max
1.1
Unit
V
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Rev. 3b, 1-Jul-2004
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LL5221B~LL5271B
V
Znom1)
I
ZT
for
r
zjT
r
zjK
at
I
ZK
I
R
at
V
R
V
mA
Ω
Ω
mA
μA
V
LL5221B
2.4
20
<30
<1200
0.25
<100
1.0
LL5222B
2.5
20
<30
<1250
0.25
<100
1.0
LL5223B
2.7
20
<30
<1300
0.25
<75
1.0
LL5224B
2.8
20
<30
<1400
0.25
<75
1.0
LL5225B
3.0
20
<29
<1600
0.25
<50
1.0
LL5226B
3.3
20
<28
<1600
0.25
<25
1.0
LL5227B
3.6
20
<24
<1700
0.25
<15
1.0
LL5228B
3.9
20
<23
<1900
0.25
<10
1.0
LL5229B
4.3
20
<22
<2000
0.25
<5
1.0
LL5230B
4.7
20
<19
<1900
0.25
<5
2.0
LL5231B
5.1
20
<17
<1600
0.25
<5
2.0
LL5232B
5.6
20
<11
<1600
0.25
<5
3.0
LL5233B
6.0
20
<7
<1600
0.25
<5
3.5
LL5234B
6.2
20
<7
<1000
0.25
<5
4.0
LL5235B
6.8
20
<5
<750
0.25
<3
5.0
LL5236B
7.5
20
<6
<500
0.25
<3
6.0
LL5237B
8.2
20
<8
<500
0.25
<3
6.5
LL5238B
8.7
20
<8
<600
0.25
<3
6.5
LL5239B
9.1
20
<10
<600
0.25
<3
7.0
LL5240B
10
20
<17
<600
0.25
<3
8.0
LL5241B
11
20
<22
<600
0.25
<2
8.4
LL5242B
12
20
<30
<600
0.25
<1
9.1
LL5243B
13
9.5
<13
<600
0.25
<0.5
9.9
LL5244B
14
9.0
<15
<600
0.25
<0.1
10
LL5245B
15
8.5
<16
<600
0.25
<0.1
11
LL5246B
16
7.8
<17
<600
0.25
<0.1
12
LL5247B
17
7.4
<19
<600
0.25
<0.1
13
LL5248B
18
7.0
<21
<600
0.25
<0.1
14
LL5249B
19
6.6
<23
<600
0.25
<0.1
15
LL5250B
20
6.2
<25
<600
0.25
<0.1
16
LL5251B
22
5.6
<29
<600
0.25
<0.1
17
LL5252B
24
5.2
<33
<600
0.25
<0.1
18
LL5253B
25
5.0
<35
<600
0.25
<0.1
19
LL5254B
27
4.6
<41
<600
0.25
<0.1
21
LL5255B
28
4.5
<44
<600
0.25
<0.1
21
LL5256B
30
4.2
<49
<600
0.25
<0.1
23
LL5257B
33
3.8
<58
<700
0.25
<0.1
25
LL5258B
36
3.4
<70
<700
0.25
<0.1
27
LL5259B
39
3.2
<80
<800
0.25
<0.1
30
LL5260B
43
3.0
<93
<900
0.25
<0.1
33
LL5261B
47
2.7
<105
<1000
0.25
<0.1
36
LL5262B
51
2.5
<125
<1100
0.25
<0.1
39
LL5263B
56
2.2
<150
<1300
0.25
<0.1
43
LL5264B
60
2.1
<170
<1400
0.25
<0.1
46
LL5265B
62
2.0
<185
<1400
0.25
<0.1
47
LL5266B
68
1.8
<230
<1600
0.25
<0.1
52
LL5267B
75
1.7
<270
<1700
0.25
<0.1
58
LL5268B
82
1.5
<330
<2000
0.25
<0.1
62
LL5269B
87
1.4
<370
<2200
0.25
<0.1
68
LL5270B
91
1.4
<400
<2300
0.25
<0.1
69
LL5271B
100
1.3
<500
<2600
0.25
<0.1
76
1) Based on DC-measurement at thermal equilibrium while maintaining the lead temperature(T
L
) at 30℃,
9.5mm (3/8”) from the diode body.
Type
TK
VZ
%/K
<-0.085
<-0.085
<-0.080
<-0.080
<-0.075
<-0.070
<-0.065
<-0.060
<+0.055
<+0.030
<+0.030
<+0.038
<+0.038
<+0.045
<+0.050
<+0.058
<+0.062
<+0.065
<+0.068
<+0.075
<+0.076
<+0.077
<+0.079
<+0.082
<+0.082
<+0.083
<+0.084
<+0.085
<+0.086
<+0.086
<+0.087
<+0.088
<+0.089
<+0.090
<+0.091
<+0.091
<+0.092
<+0.093
<+0.094
<+0.095
<+0.095
<+0.096
<+0.096
<+0.097
<+0.097
<+0.097
<+0.098
<+0.098
<+0.099
<+0.099
<+0.11
Excel Semiconductor
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FaxBack +86-512-67606917
Rev. 3b, 1-Jul-2004
2/5
LL5221B~LL5271B
Characteristics
(T
j
=25℃ unless otherwise specified)
Figure 1. Zener Voltage versus Zener Current – Vz=1 thru 16 Volts
Figure 2. Zener Voltage versus Zener Current – Vz=15 thru 30 Volts
Excel Semiconductor
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FaxBack +86-512-67606917
Rev. 3b, 1-Jul-2004
3/5
LL5221B~LL5271B
Figure 3. Zener Voltage versus Zener Current – Vz=30 thru 75 Volts
Figure 4. Thermal resistance from junction to ambient as a function of pulse duration
Excel Semiconductor
www.excel-semi.com
FaxBack +86-512-67606917
Rev. 3b, 1-Jul-2004
4/5
LL5221B~LL5271B
Dimensions in mm
Cathode identification
0.3
3.5±0.2
Glass Case
Mini Melf / SOD 80
JEDEC DO 213 AA
Excel Semiconductor
www.excel-semi.com
FaxBack +86-512-67606917
Rev. 3b, 1-Jul-2004
5/5
Φ1.5±0.1
Embedded System
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