Industrial grade Central 1N967B TR PBFREE silicon zener diode voltage regulator with 500mW power rating
Product Overview
The CENTRAL SEMICONDUCTOR 1N957B Series Silicon Zener Diode is a high-quality voltage regulator designed for industrial, commercial, entertainment, and computer applications. These diodes offer reliable voltage regulation with a power dissipation rating of 500mW and are available in various Zener voltages ranging from 6.8 Volts to 200 Volts, with standard 5% tolerance.
Product Attributes
- Brand: CENTRAL SEMICONDUCTOR
- Material: Silicon
- Package: DO-35 CASE
- Tolerance Options: 5% (B suffix), 2% (C suffix), 1% (D suffix)
- Marking: Prefix 'C' followed by the full part number or marking code (e.g., C957B)
Technical Specifications
| Part Number | Zener Voltage (V) MIN | Zener Voltage (V) NOM | Zener Voltage (V) MAX | Test Current (mA) IZT | Max Zener Impedance () ZZT @ IZT | Max Reverse Current (A) IR @ VR | Max Zener Current (mA) IZM | Marking Code |
|---|---|---|---|---|---|---|---|---|
| 1N957B | 6.460 | 6.8 | 7.140 | 18.5 | 4.5 | 1.00 | 150 | C957B |
| 1N958B | 7.125 | 7.5 | 7.875 | 16.5 | 5.5 | 0.50 | 75 | C958B |
| 1N959B | 7.790 | 8.2 | 8.610 | 15.0 | 6.5 | 0.50 | 50 | C959B |
| 1N960B | 8.645 | 9.1 | 9.555 | 14.0 | 7.5 | 0.50 | 25 | C960B |
| 1N961B | 9.500 | 10 | 10.50 | 12.5 | 8.5 | 700 | 10 | C961B |
| 1N962B | 10.45 | 11 | 11.55 | 11.5 | 9.5 | 700 | 5.0 | C962B |
| 1N963B | 11.40 | 12 | 12.60 | 10.5 | 11.5 | 700 | 5.0 | C963B |
| 1N964B | 12.35 | 13 | 13.65 | 9.5 | 13.0 | 700 | 5.0 | C964B |
| 1N965B | 14.25 | 15 | 15.75 | 8.5 | 16.0 | 700 | 5.0 | C965B |
| 1N966B | 15.20 | 16 | 16.80 | 7.8 | 17.0 | 700 | 5.0 | C966B |
| 1N967B | 17.10 | 18 | 18.90 | 7.0 | 21.0 | 750 | 5.0 | C967B |
| 1N968B | 19.00 | 20 | 21.00 | 6.2 | 25.0 | 750 | 5.0 | C968B |
| 1N969B | 20.90 | 22 | 23.10 | 5.6 | 29.0 | 750 | 5.0 | C969B |
| 1N970B | 22.80 | 24 | 25.20 | 5.2 | 33.0 | 750 | 5.0 | C970B |
| 1N971B | 25.65 | 27 | 28.35 | 4.6 | 41.0 | 750 | 5.0 | C971B |
| 1N972B | 28.50 | 30 | 31.50 | 4.2 | 49.0 | 1000 | 5.0 | C972B |
| 1N973B | 31.35 | 33 | 34.65 | 3.8 | 58.0 | 1000 | 5.0 | C973B |
| 1N974B | 34.20 | 36 | 37.80 | 3.4 | 70.0 | 1000 | 5.0 | C974B |
| 1N975B | 37.05 | 39 | 40.95 | 3.2 | 80.0 | 1000 | 5.0 | C975B |
| 1N976B | 40.85 | 43 | 45.15 | 3.0 | 93.0 | 1500 | 5.0 | C976B |
| 1N977B | 44.65 | 47 | 49.35 | 2.7 | 105 | 1500 | 5.0 | C977B |
| 1N978B | 48.45 | 51 | 53.55 | 2.5 | 125 | 2000 | 5.0 | C978B |
| 1N979B | 53.20 | 56 | 58.80 | 2.2 | 150 | 2000 | 5.0 | C979B |
| 1N980B | 58.90 | 62 | 65.10 | 2.0 | 185 | 2000 | 5.0 | C980B |
| 1N981B | 64.60 | 68 | 71.40 | 1.8 | 230 | 2000 | 5.0 | C981B |
| 1N982B | 71.25 | 75 | 78.75 | 1.7 | 270 | 2000 | 5.0 | C982B |
| 1N983B | 77.90 | 82 | 86.10 | 1.5 | 330 | 3000 | 5.0 | C983B |
| 1N984B | 86.45 | 91 | 95.55 | 1.4 | 400 | 3000 | 5.0 | C984B |
| 1N985B | 95.00 | 100 | 105.0 | 1.3 | 500 | 3000 | 5.0 | C985B |
| 1N986B | 104.5 | 110 | 115.5 | 1.1 | 750 | 4000 | 5.0 | C986B |
| 1N987B | 114.0 | 120 | 126.0 | 1.0 | 900 | 4500 | 5.0 | C987B |
| 1N988B | 123.5 | 130 | 136.5 | 0.95 | 1100 | 5000 | 5.0 | C988B |
| 1N989B | 142.5 | 150 | 157.5 | 0.85 | 1500 | 6000 | 5.0 | C989B |
| 1N990B | 152.0 | 160 | 168.0 | 0.80 | 1700 | 6500 | 5.0 | C990B |
| 1N991B | 171.0 | 180 | 189.0 | 0.68 | 2200 | 7100 | 5.0 | C991B |
| 1N992B | 190.0 | 200 | 210.0 | 0.65 | 2500 | 8000 | 5.0 | C992B |
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): 1.5V MAX @ IF=200mA (for all types)
Note: The 1N979B through 1N992B series are classified as End of Life (EOL). The effective date for placing the last purchase order was six months from the notice date, and twelve months from the notice date for final shipments.
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