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Zener diodes are designed for operation in a reverse-breakdown mode and are characterized according to their behavior when used in this fashion. Useful as a voltage reference or for voltage limiting purposes, they are also capable of functioning as a one-way valve for current flow in the manner of rectifier diodes, though their behavior in this mode is generally less ideal than that of purpose-built devices. Products within this family implement exactly one instance of this function per device package.
| Select products | Mfr | Description | Package | Supplier Device Package | Mounting Type | Series | Operating Temperature |
|---|---|---|---|---|---|---|---|
![]() 1N5259B BK PBFREE $0.05 | Central Semiconductor Corp | DIODE ZENER 39V 500MW DO35 | Bulk | Through Hole | - | -65°C ~ 200°C (TJ) | |
![]() 1N5259B BK TIN/LEAD $0.03 | Central Semiconductor Corp | TH DIODE-ZENER SINGLE: STANDARD | Box | Through Hole | - | -65°C ~ 200°C (TJ) | |
![]() 1N5259B TR PBFREE $0.38 | Central Semiconductor Corp | DIODE ZENER 39V 500MW DO35 | Tape & Reel (TR),Cut Tape (CT) | Through Hole | - | -65°C ~ 200°C | |
![]() 1N5259B-1 $2.35 | Microchip Technology | DIODE ZENER 39V 500MW DO204AH | Bulk | Through Hole | - | -65°C ~ 175°C (TJ) | |
| Comchip Technology | DIODE ZENER 39V 500MW DO35 | Tape & Box (TB) | Through Hole | - | 175°C (TJ) | ||
![]() 1N5259B-T $0.14 | Diodes Incorporated | DIODE ZENER 39V 500MW DO35 | Tape & Reel (TR),Cut Tape (CT) | Through Hole | - | -65°C ~ 200°C | |
| Vishay General Semiconductor - Diodes Division | DIODE ZENER 39V 500MW DO204AH | Tape & Reel (TR) | Through Hole | - | 175°C | ||
![]() 1N5259B-TAP $0.03 | Vishay General Semiconductor - Diodes Division | DIODE ZENER 39V 500MW DO204AH | Tape & Box (TB) | Through Hole | - | -65°C ~ 175°C |

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