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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 |
|---|---|---|---|---|---|---|---|
![]() 1N5257B TR PBFREE $0.34 | Central Semiconductor Corp | DIODE ZENER 33V 500MW DO35 | Tape & Reel (TR),Cut Tape (CT) | Through Hole | - | -65°C ~ 200°C | |
![]() 1N5257B-FS $1.72 | Fairchild Semiconductor | DIODE ZENER 33V 500MW DO35 | Bulk | Through Hole | - | -65°C ~ 200°C (TJ) | |
![]() 1N5257B-G $0.03 | Comchip Technology | DIODE ZENER 33V 500MW DO35 | Tape & Box (TB) | Through Hole | - | - | |
![]() 1N5257B-T $0.14 | Diodes Incorporated | DIODE ZENER 33V 500MW DO35 | Tape & Reel (TR),Cut Tape (CT) | Through Hole | - | -65°C ~ 200°C | |
| Vishay General Semiconductor - Diodes Division | DIODE ZENER 33V 500MW DO204AH | Tape & Reel (TR) | Through Hole | - | 175°C | ||
![]() 1N5257B-TAP $0.11 | Vishay General Semiconductor - Diodes Division | DIODE ZENER 33V 500MW DO204AH | Cut Tape (CT),Tape & Box (TB) | Through Hole | - | -65°C ~ 175°C | |
![]() 1N5257B-TP $0.11 | MCC (Micro Commercial Components) | DIODE ZENER 33V 500MW DO35 | Tape & Reel (TR),Cut Tape (CT) | Through Hole | - | -55°C ~ 150°C | |
![]() 1N5257B-TR $0.09 | Vishay General Semiconductor - Diodes Division | DIODE ZENER 33V 500MW DO204AH | Tape & Reel (TR),Cut Tape (CT) | Through Hole | - | -65°C ~ 175°C |

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