1N5347BRL – TBC

Overview

The onsemi 1N5347BRL is a robust 5W Zener diode designed for precise voltage regulation at 10V, featuring a tight ±5% tolerance. Its primary function is to maintain a stable reference voltage in power supply circuits, crucial for protecting sensitive downstream components from overvoltage transients. A key design consideration for high-power Zener diodes like this is managing thermal dissipation; while its 5W rating is substantial, designers must ensure adequate heatsinking to prevent exceeding the 200°C operating temperature, which can lead to parameter drift and premature failure, especially in continuous high-current applications.

Key Features

• Zener Voltage (Nominal): 10 V
• Maximum Power Dissipation: 5 W
• Zener Impedance (Max): 2 Ohms
• Reverse Leakage Current: 5 µA @ 7.6 V
• Forward Voltage (Max): 1.2 V @ 1 A
• Package: T-18, 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.

• Voltage clamping in high-current power supplies
• Reference voltage generation for linear regulators
• Transient voltage suppression in automotive electronics
• Overvoltage protection for sensitive analog circuitry