1N5359BG – ONSEMI

Overview

The onsemi 1N5359BG is a robust 5W axial-leaded Zener diode designed for precise voltage regulation. Its primary function is to maintain a stable 24V output voltage under varying load conditions, crucial for sensitive analog circuitry. A key engineering consideration is the trade-off between its high power dissipation capability (5W) and its Zener impedance (3.5 Ohms max). While the higher power rating allows for significant current handling, a lower Zener impedance is generally preferred for tighter voltage regulation; designers must carefully balance these factors to achieve optimal performance within thermal constraints.

Key Features

• Zener Voltage (Vz): 24 V
• Maximum Power Dissipation: 5 W
• Zener Impedance (Zzt): 3.5 Ohms (Max)
• Reverse Leakage Current: 500 nA @ 18.2 V
• Forward Voltage (Vf): 1.2 V @ 1 A
• Operating Temperature Range: -65°C to 200°C
• Package: T-18, Axial

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 circuits in instrumentation
• Overvoltage protection for sensitive ICs in industrial controls
• Power supply regulation in high-temperature automotive environments
• Clipping and clamping of transient voltage spikes in communication systems