BZX79C4V3 – TBC
4.3 V Zener Diode, 6.98%, 0.5 W, Silicon, Unidirectional, DO‑35 Package
Stock Quantity: 230
Selling Unit: Each
| Quantity | Price (ex VAT) |
|---|---|
| 1+ | 0.29 |
| 10+ | |
| 50+ | |
| 100+ |
230 in stock
Contact us for volume pricing
- Same day shipping if ordered before 14.00 GMT
- 6 month warranty on all stock items
- All stock held and shipped from our UK warehouse
- Worldwide shipping available, contact us for a quotation
- We can ship on your DHL or UPS account if required
- Any import duties or taxes are the responsibility of the receiver
Overview
The onsemi BZX79C4V3 is a highly stable 4.3V Zener diode designed for precise voltage regulation in sensitive electronic circuits. Its critical operational characteristic lies in its low Zener impedance (Zzt) of 90 Ohms at 4.3V, which minimizes output voltage ripple under varying load conditions. A key design consideration for engineers is the trade-off between its 500 mW power dissipation capability and the potential for thermal runaway if operated continuously at its maximum rating without adequate heatsinking, especially in higher ambient temperatures up to 200°C.
Key Features
- Zener Voltage (Vz): 4.3 V
- Tolerance: ±5%
- Maximum Power Dissipation: 500 mW
- Maximum Zener Impedance (Zzt): 90 Ohms
- Reverse Leakage Current: 5 µA @ 1 V
- Package: DO-35, Axial (Through Hole)
Applications
The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.
- Precision voltage reference for analog signal conditioning circuits.
- Low-power shunt regulation in battery-operated portable devices.
- Protection against transient overvoltage in sensitive input stages.
- Establishing stable bias points for operational amplifiers in instrumentation.
