1N5221B THRU 1N5278B
SILICON ZENER DIODES
500mW, 2.4 THRU 170 VOLT
5% TOLERANCE
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 1N5221B series
silicon Zener diodes are highly reliable voltage regulators
designed for use in industrial, commercial, entertainment
and computer applications.
MAXIMUM RATINGS: (TL=75°C) SYMBOL UNITS
Power Dissipation PD 500 mW
Operating and Storage Junction Temperature TJ, Tstg -65 to +200 °C
VZ Tolerance: Part number with “B” suffix ±5 %
VZ Tolerance: Part number with “C” suffix ±2 %
VZ Tolerance: Part number with “D” suffix ±1 %
ELECTRICAL CHARACTERISTICS: (TA=25°C) VF=1.1V MAX @ IF=200mA (for all types)
TYPE
ZENER
VOLTAGE
VZ @ IZT
TEST
CURRENT
MAXIMUM ZENER
IMPEDANCE
MAXIMUM
REVERSE
CURRENT
MAXIMUM
TEMPERATURE
COEFFICIENT
MIN NOM MAX IZT ZZT @ IZT ZZK @ IZK IR @ VRVZ
V V V mA Ω Ω mA μA V %/°C
1N5221B 2.280 2.4 2.520 20 30 1200 0.25 100 1.0 -0.085
1N5222B 2.375 2.5 2.625 20 30 1250 0.25 100 1.0 -0.085
1N5223B 2.565 2.7 2.835 20 30 1300 0.25 75 1.0 -0.080
1N5224B 2.660 2.8 2.940 20 30 1400 0.25 75 1.0 -0.080
1N5225B 2.850 3.0 3.150 20 29 1600 0.25 50 1.0 -0.075
1N5226B 3.135 3.3 3.465 20 28 1600 0.25 25 1.0 -0.070
1N5227B 3.420 3.6 3.780 20 24 1700 0.25 15 1.0 -0.065
1N5228B 3.705 3.9 4.095 20 23 1900 0.25 10 1.0 -0.060
1N5229B 4.085 4.3 4.515 20 22 2000 0.25 5.0 1.0 ±0.055
1N5230B 4.465 4.7 4.935 20 19 1900 0.25 5.0 2.0 ±0.030
1N5231B 4.845 5.1 5.355 20 17 1600 0.25 5.0 2.0 ±0.030
1N5232B 5.320 5.6 5.880 20 11 1600 0.25 5.0 3.0 +0.038
1N5233B 5.700 6.0 6.300 20 7.0 1600 0.25 5.0 3.5 +0.038
1N5234B 5.890 6.2 6.510 20 7.0 1000 0.25 5.0 4.0 +0.045
1N5235B 6.460 6.8 7.140 20 5.0 750 0.25 3.0 5.0 +0.050
1N5236B 7.125 7.5 7.875 20 6.0 500 0.25 3.0 6.0 +0.058
1N5237B 7.790 8.2 8.610 20 8.0 500 0.25 3.0 6.5 +0.062
1N5238B 8.265 8.7 9.135 20 8.0 600 0.25 3.0 6.5 +0.065
1N5239B 8.645 9.1 9.555 20 10 600 0.25 3.0 7.0 +0.068
1N5240B 9.500 10 10.50 20 17 600 0.25 3.0 8.0 +0.075
1N5241B 10.45 11 11.55 20 22 600 0.25 2.0 8.4 +0.076
1N5242B 11.40 12 12.60 20 30 600 0.25 1.0 9.1 +0.077
1N5243B 12.35 13 13.65 9.5 13 600 0.25 0.5 9.9 +0.079
1N5244B 13.30 14 14.70 9.0 15 600 0.25 0.1 10 +0.082
1N5245B 14.25 15 15.75 8.5 16 600 0.25 0.1 11 +0.082
1N5246B 15.20 16 16.80 7.8 17 600 0.25 0.1 12 +0.083
DO-35 CASE
R3 (11-September 2013)
www.centralsemi.com
1N5221B THRU 1N5278B
SILICON ZENER DIODES
500mW, 2.4 THRU 170 VOLT
5% TOLERANCE
DO-35 CASE - MECHANICAL OUTLINE
ELECTRICAL CHARACTERISTICS - Continued: (TA=25°C) VF=1.1V MAX @ IF=200mA (for all types)
TYPE
ZENER
VOLTAGE
VZ @ IZT
TEST
CURRENT
MAXIMUM ZENER
IMPEDANCE
MAXIMUM
REVERSE
CURRENT
MAXIMUM
TEMPERATURE
COEFFICIENT
MIN NOM MAX IZT ZZT @ IZT ZZK @ IZK IR @ VRVZ
V V V mA Ω Ω mA μA V %/°C
1N5247B 16.15 17 17.85 7.4 19 600 0.25 0.1 13 +0.084
1N5248B 17.10 18 18.90 7.0 21 600 0.25 0.1 14 +0.085
1N5249B 18.05 19 19.95 6.6 23 600 0.25 0.1 14 +0.086
1N5250B 19.00 20 21.00 6.2 25 600 0.25 0.1 15 +0.086
1N5251B 20.90 22 23.10 5.6 29 600 0.25 0.1 17 +0.087
1N5252B 22.80 24 25.20 5.2 33 600 0.25 0.1 18 +0.088
1N5253B 23.75 25 26.25 5.0 35 600 0.25 0.1 19 +0.089
1N5254B 25.65 27 28.35 4.6 41 600 0.25 0.1 21 +0.090
1N5255B 26.60 28 29.40 4.5 44 600 0.25 0.1 21 +0.091
1N5256B 28.50 30 31.50 4.2 49 600 0.25 0.1 23 +0.091
1N5257B 31.35 33 34.65 3.8 58 700 0.25 0.1 25 +0.092
1N5258B 34.20 36 37.80 3.4 70 700 0.25 0.1 27 +0.093
1N5259B 37.05 39 40.95 3.2 80 800 0.25 0.1 30 +0.094
1N5260B 40.85 43 45.15 3.0 93 900 0.25 0.1 33 +0.095
1N5261B 44.65 47 49.35 2.7 105 1000 0.25 0.1 36 +0.095
1N5262B 48.45 51 53.55 2.5 125 1100 0.25 0.1 39 +0.096
1N5263B 53.20 56 58.80 2.2 150 1300 0.25 0.1 43 +0.096
1N5264B 57.00 60 63.00 2.1 170 1400 0.25 0.1 46 +0.097
1N5265B 58.90 62 65.10 2.0 185 1400 0.25 0.1 47 +0.097
1N5266B 64.60 68 71.40 1.8 230 1600 0.25 0.1 52 +0.097
1N5267B 71.25 75 78.75 1.7 270 1700 0.25 0.1 56 +0.098
1N5268B 77.90 82 86.10 1.5 330 2000 0.25 0.1 62 +0.098
1N5269B 82.65 87 91.35 1.4 370 2200 0.25 0.1 68 +0.099
1N5270B 86.45 91 95.55 1.4 400 2300 0.25 0.1 69 +0.099
1N5271B 95.00 100 105.0 1.3 500 2600 0.25 0.1 76 +0.110
1N5272B 104.5 110 115.5 1.1 750 3000 0.25 0.1 84 +0.110
1N5273B 114.0 120 126.0 1.0 900 4000 0.25 0.1 91 +0.110
1N5274B 123.5 130 136.5 0.95 1100 4500 0.25 0.1 99 +0.110
1N5275B 133.0 140 147.0 0.90 1300 4500 0.25 0.1 106 +0.110
1N5276B 142.5 150 157.5 0.85 1500 5000 0.25 0.1 114 +0.110
1N5277B 152.0 160 168.0 0.80 1700 5500 0.25 0.1 122 +0.110
1N5278B 161.5 170 178.5 0.74 1900 5500 0.25 0.1 129 +0.110
AB
C
D D
www.centralsemi.com
R3 (11-September 2013)
For the latest version of Central Semiconductor’s LIMITATIONS AND DAMAGES DISCLAIMER,
which is part of Central’s Standard Terms and Conditions of sale, visit: www.centralsemi.com/terms
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(001)
REQUESTING PRODUCT PLATING
1. If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when
ordering (example: 2N2222A TIN/LEAD).
2. If requesting Lead (Pb) Free plated devices, add the suffix “ PBFREE” to the part number
when ordering (example: 2N2222A PBFREE).
www.centralsemi.com
PDN01089
5/02/18
11/02/18
http://www.centralsemi.com 5/02/19
Summary:All high voltage 500mW Zener diodes in the DO-35 package are discontinued and now classified as End of Life (EOL).
Although Central Semiconductor Corp. makes every effort to continue to produce devices that have been proclaimed EOL (End of Life) by
other manufacturers, it is an accepted industry practice to discontinue certain devices when customer demand falls below a minimum level of
sustainability. Accordingly, the following product(s) have been transitioned to End of Life status as part of Central's ongoing Product
Management Process. Any replacement products are noted below. The effective date for placing last purchase orders will be six (6) months
from the date of this notice and twelve (12) months from the notice date for final shipments, and minimum order quantities may apply.
The last purchase and shipment dates may be extended if inventory is available.
Central Part Number Replacement
1N5263B BK N/A
1N5263B TR N/A
1N5264B BK N/A
1N5264B TR N/A
1N5265B BK N/A
1N5265B TR N/A
1N5266B BK N/A
1N5266B TR N/A
1N5267B BK N/A
1N5267B TR N/A
1N5268B AP N/A
1N5268B BK N/A
1N5268B TR N/A
1N5269B AP N/A
1N5269B BK N/A
1N5269B TR N/A
1N5270B AP N/A
1N5270B BK N/A
1N5270B TR N/A
1N5271B AP N/A
1N5271B BK N/A
1N5271B TR N/A
1N5272B AP N/A
1N5272B BK N/A
1N5272B TR N/A
1N5273B AP N/A
1N5273B BK N/A
1N5273B TR N/A
1N5274 TR N/A
1N5274B BK N/A
1N5274B TR N/A
1N5275B BK N/A
1N5275B TR N/A
1N5276B BK N/A
1N5276B TR N/A
1N5277B BK N/A
1N5277B TR N/A
1N5278B BK N/A
*** CONTINUED ***
PDN01089
5/02/18
11/02/18
http://www.centralsemi.com 5/02/19
*** CONTINUED FROM PRIOR PAGE ***
Central Part Number Replacement
1N5278B TR N/A
1N5279B BK N/A
1N5279B TR N/A
1N5280B BK N/A
1N5280B TR N/A
1N5281B BK N/A
1N5281B TR N/A
Central would be happy to assist you by providing additional information or technical data to help locate an alternate source if we
have no replacement available. Please email your requests to engineering@centralsemi.com.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Central Semiconductor:
1N5245B 1N5266B 1N5279B 1N5233B 1N5273B TR 1N5253B TR 1N5223B TR 1N5243B TR 1N5237B TR
1N5240B TR 1N5257B TR 1N5270B TR 1N5260B TR 1N5250B TR 1N5259B TR 1N5249B TR 1N5269B TR
1N5272B TR 1N5229B TR 1N5247B TR 1N5262B TR 1N5256B TR 1N5246B TR 1N5225B TR 1N5228B TR
1N5278B TR 1N5232B TR 1N5265B TR 1N5242B TR 1N5267B TR 1N5261B TR 1N5251B TR 1N5221B TR
1N5252B TR 1N5275B TR 1N5222B TR 1N5264B TR 1N5271B TR 1N5239B TR 1N5268B TR 1N5248B TR
1N5235B TR 1N5258B TR 1N5263B TR 1N5224B TR 1N5274B TR 1N5277B TR 1N5254B TR 1N5234B TR
1N5230B TR 1N5227B TR 1N5226B TR 1N5276B TR 1N5236B TR 1N5238B TR 1N5255B TR 1N5244B TR
1N5241B TR 1N5231B TR 1N5233B TR 1N5245B TR 1N5266B TR 1N5230B BK 1N5260B BK 1N5257B BK
1N5263B BK 1N5258B BK 1N5225B BK 1N5231B BK 1N5267B BK 1N5221B BK 1N5245B BK 1N5239B BK
1N5234B BK 1N5228B BK 1N5240B BK 1N5264B BK 1N5232B BK 1N5226B BK 1N5266B BK 1N5238B BK
1N5233B BK 1N5244B BK 1N5268B BK 1N5255B BK 1N5254B BK 1N5248B BK 1N5242B BK 1N5236B BK
1N5223B BK 1N5253B BK
