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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 |
|---|---|---|---|---|---|---|---|
![]() 1N4993 $10.09 | Microchip Technology | DIODE ZENER 300V 5W E-AXIAL | Bulk | Through Hole | - | -65°C ~ 175°C (TJ) | |
![]() 1N4993US $12.04 | Microchip Technology | DIODE ZENER 300V 5W D5B | Bulk | Surface Mount | - | -65°C ~ 175°C (TJ) | |
![]() 1N4993US/TR $12.16 | Microchip Technology | DIODE ZENER 300V 5W D5B | Tape & Reel (TR) | Surface Mount | - | -65°C ~ 175°C (TJ) | |
![]() 1N4994 $40.85 | Microchip Technology | DIODE ZENER 330V 5W E-AXIAL | Bulk | Through Hole | - | -65°C ~ 175°C (TJ) | |
![]() 1N4994US $43.07 | Microchip Technology | DIODE ZENER 330V 5W D5B | Bulk | Surface Mount | - | -65°C ~ 175°C (TJ) | |
![]() 1N4994US/TR $46.50 | Microchip Technology | DIODE ZENER 330V 5W E-MELF | Tape & Reel (TR),Cut Tape (CT) | Surface Mount | - | -65°C ~ 175°C (TJ) | |
![]() 1N4995 $27.45 | Microchip Technology | DIODE ZENER 360V 5W E-AXIAL | Bulk | Through Hole | - | -65°C ~ 175°C (TJ) | |
![]() 1N4995US $43.07 | Microchip Technology | DIODE ZENER 360V 5W D5B | Bulk | Surface Mount | - | -65°C ~ 175°C (TJ) |

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