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