1N5306 BK PBFREE

Overview

The Central Semiconductor Corp 1N5306 BK PBFREE is a 5-watt axial leaded Zener diode designed for voltage regulation and reference applications. It features a nominal Zener voltage of 75V with a tolerance range of 71.25V to 78.75V at a test current of 31mA. The device supports a maximum reverse leakage current of 5µA at its rated voltage and can withstand a peak pulse power dissipation of 150W. It operates within a junction temperature range of -65°C to +175°C and utilizes a DO-201AE (DO-41) package.

Feature Summary

• High power handling capability with 5W continuous dissipation rating
• Wide operating temperature range suitable for harsh environments
• Stable voltage regulation characteristics over specified current ranges

Applications

• Voltage reference circuits in precision measurement equipment
• Overvoltage protection stages in power supply inputs
• Clamping applications in industrial control systems

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest datasheet to confirm pinout orientation and tolerance grade. Ensure the procurement channel provides traceability documentation compliant with RoHS directives. Confirm that the axial lead form factor matches the target PCB layout requirements before finalizing orders.

Selection Notes

Select this component when high power dissipation is required in an axial package format. Compare the 75V nominal value against circuit load requirements to ensure adequate headroom. Evaluate thermal management needs given the 5W rating, as heat sinking may be necessary for sustained operation near maximum limits.

Part Context

This part belongs to the standard 1N53xx series of high-power Zener diodes manufactured by Central Semiconductor. These components are widely used in legacy and modern designs requiring robust voltage clamping. The series offers various voltage options within the same mechanical footprint, simplifying inventory management for engineers designing multi-voltage systems.

Replacement Considerations

Cross-reference with other manufacturers' DO-201AE 5W Zener diodes offering 75V ±5% tolerance. Verify that substitute parts meet or exceed the 175°C maximum junction temperature rating and maintain similar dynamic impedance characteristics for equivalent performance.