BZX55C4V3 Zener Diode 4.3V 0.5W
The 4.3V 0.5W Zener diode is a silicon planar through-hole component designed to maintain a controlled voltage when operated in its Zener breakdown region. It can be used in voltage regulation, reference circuits, protection networks, and signal-clamping applications where a stable voltage threshold is required.
This type of Zener diode uses an axial glass package with a cathode band for polarity identification. The supplied BZX55C datasheet specifies a maximum power dissipation of 500mW, a maximum forward voltage of 1V at 100mA, and an operating junction temperature up to 175°C.
Features:
- Silicon planar Zener diode.
- Axial through-hole construction.
- Glass-body package.
- Suitable for voltage stabilization.
- Useful for voltage reference and clamping circuits.
- Polarized component with clearly marked cathode band.
- Suitable for PCB mounting.
- Designed for general electronic circuit protection and regulation.
Specifications:
| Parameter | Specification |
|---|---|
| Product Type | Zener Diode |
| Part Number | BZX55C4V3 |
| Zener Voltage | 4.3V nominal |
| Power Rating | 0.5W (500mW) |
| Technology | Silicon Planar |
| Package | DO-35 |
| Mounting Type | Through-Hole |
| Configuration | Single Diode |
| Polarity | Cathode / Anode |
| Forward Voltage | 1V max. at IF = 100mA |
| Junction Temperature | Up to 175°C |
| Storage Temperature | -55°C to +175°C |
| Body Type | Axial Glass |
Applications:
- Voltage regulation
- Voltage reference circuits
- Overvoltage protection
- Voltage clamping
- Signal limiting
- Power supply protection
- Transistor and IC protection
- General-purpose electronic circuits
Packages Included:
- 1 × BZX55C4V3 Zener Diode 4.3V 0.5W.







