High reliability Central 1N5253B BK PBFREE Zener diode 500mW voltage regulator for computer systems
Key Attributes
Model Number:
1N5253B BK PBFREE
Product Custom Attributes
Impedance(Zzt):
35Ω
Pd - Power Dissipation:
500mW
Zener Voltage(Nom):
25V
Mfr. Part #:
1N5253B BK PBFREE
Package:
DO-35
Product Description
Product Overview
The CENTRAL SEMICONDUCTOR 1N5221B series silicon Zener diodes are highly reliable voltage regulators designed for industrial, commercial, entertainment, and computer applications. These 500mW diodes offer precise voltage regulation across a wide range, from 2.4 to 170 volts, with a standard tolerance of 5%.
Product Attributes
- Brand: CENTRAL SEMICONDUCTOR
- Material: Silicon
- Package: DO-35
- Tolerance Options: 5% (B suffix), 2% (C suffix), 1% (D suffix)
Technical Specifications
| Part Number | Zener Voltage (VZ) @ IZT (V) | Test Current (IZT) (mA) | Max Zener Impedance (ZZT @ IZT) () | Max Reverse Current (IR @ VR) (A) | Max Temperature Coefficient (VZ) (V/%/C) | Marking Code |
|---|---|---|---|---|---|---|
| 1N5221B | 2.4 (Nominal) | 20 | 30 | 0.25 | -0.085 | C5221B |
| 1N5222B | 2.5 (Nominal) | 20 | 30 | 0.25 | -0.085 | C5222B |
| 1N5223B | 2.7 (Nominal) | 20 | 30 | 0.25 | -0.080 | C5223B |
| 1N5224B | 2.8 (Nominal) | 20 | 30 | 0.25 | -0.080 | C5224B |
| 1N5225B | 3.0 (Nominal) | 20 | 29 | 0.25 | -0.075 | C5225B |
| 1N5226B | 3.3 (Nominal) | 20 | 28 | 0.25 | -0.070 | C5226B |
| 1N5227B | 3.6 (Nominal) | 20 | 24 | 0.25 | -0.065 | C5227B |
| 1N5228B | 3.9 (Nominal) | 20 | 23 | 0.25 | -0.060 | C5228B |
| 1N5229B | 4.3 (Nominal) | 20 | 22 | 0.25 | 0.055 | C5229B |
| 1N5230B | 4.7 (Nominal) | 20 | 19 | 0.25 | 0.030 | C5230B |
| 1N5231B | 5.1 (Nominal) | 20 | 17 | 0.25 | 0.030 | C5231B |
| 1N5232B | 5.6 (Nominal) | 20 | 11 | 0.25 | +0.038 | C5232B |
| 1N5233B | 6.0 (Nominal) | 20 | 7.0 | 0.25 | +0.038 | C5253B |
| 1N5234B | 6.2 (Nominal) | 20 | 7.0 | 0.25 | +0.045 | C5234B |
| 1N5235B | 6.8 (Nominal) | 20 | 5.0 | 0.25 | +0.050 | C5235B |
| 1N5236B | 7.5 (Nominal) | 20 | 6.0 | 0.25 | +0.058 | C5236B |
| 1N5237B | 8.2 (Nominal) | 20 | 8.0 | 0.25 | +0.062 | C5237B |
| 1N5238B | 8.7 (Nominal) | 20 | 8.0 | 0.25 | +0.065 | C5238B |
| 1N5239B | 9.1 (Nominal) | 20 | 10 | 0.25 | +0.068 | C5239B |
| 1N5240B | 10 (Nominal) | 20 | 17 | 0.25 | +0.075 | C5240B |
| 1N5241B | 11 (Nominal) | 20 | 22 | 0.25 | +0.076 | C5241B |
| 1N5242B | 12 (Nominal) | 20 | 30 | 0.25 | +0.077 | C5242B |
| 1N5243B | 13 (Nominal) | 9.5 | 13 | 0.25 | +0.079 | C5243B |
| 1N5244B | 14 (Nominal) | 9.0 | 15 | 0.25 | +0.082 | C5244B |
| 1N5245B | 15 (Nominal) | 8.5 | 16 | 0.25 | +0.082 | C5245B |
| 1N5246B | 16 (Nominal) | 7.8 | 17 | 0.25 | +0.083 | C5246B |
| 1N5247B | 17 (Nominal) | 7.4 | 19 | 0.25 | +0.084 | C5247B |
| 1N5248B | 18 (Nominal) | 7.0 | 21 | 0.25 | +0.085 | C5248B |
| 1N5249B | 19 (Nominal) | 6.6 | 23 | 0.25 | +0.086 | C5249B |
| 1N5250B | 20 (Nominal) | 6.2 | 25 | 0.25 | +0.086 | C5250B |
| 1N5251B | 22 (Nominal) | 5.6 | 29 | 0.25 | +0.087 | C5251B |
| 1N5252B | 24 (Nominal) | 5.2 | 33 | 0.25 | +0.088 | C5252B |
| 1N5253B | 25 (Nominal) | 5.0 | 35 | 0.25 | +0.089 | C5253B |
| 1N5254B | 27 (Nominal) | 4.6 | 41 | 0.25 | +0.090 | C5254B |
| 1N5255B | 28 (Nominal) | 4.5 | 44 | 0.25 | +0.091 | C5255B |
| 1N5256B | 30 (Nominal) | 4.2 | 49 | 0.25 | +0.091 | C5256B |
| 1N5257B | 33 (Nominal) | 3.8 | 58 | 0.25 | +0.092 | C5257B |
| 1N5258B | 36 (Nominal) | 3.4 | 70 | 0.25 | +0.093 | C5258B |
| 1N5259B | 39 (Nominal) | 3.2 | 80 | 0.25 | +0.094 | C5259B |
| 1N5260B | 43 (Nominal) | 3.0 | 93 | 0.25 | +0.095 | C5260B |
| 1N5261B | 47 (Nominal) | 2.7 | 105 | 0.25 | +0.095 | C5261B |
| 1N5262B | 51 (Nominal) | 2.5 | 125 | 0.25 | +0.096 | C5262B |
| 1N5263B | 56 (Nominal) | 2.2 | 150 | 0.25 | +0.096 | C5263B |
| 1N5264B | 60 (Nominal) | 2.1 | 170 | 0.25 | +0.097 | C5264B |
| 1N5265B | 62 (Nominal) | 2.0 | 185 | 0.25 | +0.097 | C5265B |
| 1N5266B | 68 (Nominal) | 1.8 | 230 | 0.25 | +0.097 | C5266B |
| 1N5267B | 75 (Nominal) | 1.7 | 270 | 0.25 | +0.098 | C5267B |
| 1N5268B | 82 (Nominal) | 1.5 | 330 | 0.25 | +0.098 | C5268B |
| 1N5269B | 87 (Nominal) | 1.4 | 370 | 0.25 | +0.099 | C5269B |
| 1N5270B | 91 (Nominal) | 1.4 | 400 | 0.25 | +0.099 | C5270B |
| 1N5271B | 100 (Nominal) | 1.3 | 500 | 0.25 | +0.110 | C5271B |
| 1N5272B | 110 (Nominal) | 1.1 | 750 | 0.25 | +0.110 | C5272B |
| 1N5273B | 120 (Nominal) | 1.0 | 900 | 0.25 | +0.110 | C5273B |
| 1N5274B | 130 (Nominal) | 0.95 | 1100 | 0.25 | +0.110 | C5274B |
| 1N5275B | 140 (Nominal) | 0.90 | 1300 | 0.25 | +0.110 | C5275B |
| 1N5276B | 150 (Nominal) | 0.85 | 1500 | 0.25 | +0.110 | C5276B |
| 1N5277B | 160 (Nominal) | 0.80 | 1700 | 0.25 | +0.110 | C5277B |
| 1N5278B | 170 (Nominal) | 0.74 | 1900 | 0.25 | +0.110 | C5278B |
Maximum Ratings (TL=75C):
- Power Dissipation (PD): 500 mW
- Operating and Storage Junction Temperature (TJ, Tstg): -65 to +200 C
Electrical Characteristics (TA=25C):
- Forward Voltage (VF): 1.2V MAX @ IF=200mA (for all types)
Marking: Devices are marked with the prefix 'C' followed by the full part number or by the marking code in the Electrical Characteristics Table.
Note: Certain high voltage 500mW Zener diodes in the DO-35 package (e.g., 1N5263B through 1N5278B and higher) are discontinued and classified as End of Life (EOL). Please contact Central Semiconductor for potential replacements or alternative sourcing assistance.
2504101957_Central-1N5253B-BK-PBFREE_C17425304.pdf
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