1N4557RB
DIODE ZENER 3.9V 50W TO204ADManufacturer: Microchip Technology
Categories: Single Zener Diodes
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Microchip Technology's 1N4557RB is a high-power Zener diode featuring a nominal breakdown voltage of 3.9V and a maximum power dissipation of 50W. This through-hole component, packaged in a TO-204AD (TO-3) metal can, offers a tight tolerance of ±5% for precise voltage regulation. Its low impedance (Zzt) of 0.16 Ohms at 100mA ensures efficient operation. With a reverse leakage current of 150 µA at 0.5V and a forward voltage drop of 1.5V at 10A, the 1N4557RB is suitable for demanding power supply regulation, voltage clamping, and surge protection applications across industrial, automotive, and telecommunications sectors. The operating temperature range is -65°C to 175°C.
Additional Information
Series: -RoHS Status: RoHS non-compliantManufacturer Lead Time: 35 week(s)Product Status: ActivePackaging: BulkDatasheet:Download Free CAD Model:
Technical Details:
| Tolerance | ±5% |
| Packaging | Bulk |
| Package / Case | TO-204AD |
| Mounting Type | Through Hole |
| Operating Temperature | -65°C ~ 175°C |
| Voltage - Zener (Nom) (Vz) | 3.9 V |
| Impedance (Max) (Zzt) | 0.16 Ohms |
| Supplier Device Package | TO-204AD (TO-3) |
| Power - Max | 50 W |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 10 A |
| Current - Reverse Leakage @ Vr | 150 µA @ 500 mV |