1N4687 BK TIN/LEAD

Overview

The Central Semiconductor Corp 1N4687 BK TIN/LEAD is a through-hole silicon Zener diode housed in the DO-35 glass axial leaded package. It provides a nominal Zener voltage of 4.3 V with a 5% tolerance and a maximum power dissipation of 500 mW. The device operates within a temperature range of -65°C to +200°C, featuring a maximum reverse leakage current of 50 µA and a test current of 115 mA.

Feature Summary

• Hermetically sealed glass construction for environmental protection
• High operating junction temperature capability up to 200°C
• Low leakage current characteristics suitable for sensitive circuits

Applications

• Voltage reference applications
• Overvoltage protection circuits
• General purpose rectification and regulation

Procurement Notes

Verify the specific manufacturer datasheet for the 1N4687 BK TIN/LEAD variant to confirm exact electrical tolerances and thermal ratings. Ensure the tin/lead plating specification aligns with project requirements. Cross-reference the DO-35 package dimensions against the target PCB footprint before finalizing procurement decisions.

Selection Notes

Select this component when a hermetically sealed, high-temperature rated Zener diode is required. The 500 mW power rating supports moderate current loads. Verify that the 4.3 V breakdown voltage matches the circuit design needs and that the DO-35 package fits the assembly constraints.

Part Context

This part belongs to the standard 1N4687 series of Zener diodes manufactured by Central Semiconductor Corp. It utilizes a glass passivated junction technology designed for reliability in harsh environments. The tin/lead finish indicates a specific terminal plating option distinct from lead-free variants.

Replacement Considerations

Direct replacements include other manufacturers' 1N4687 parts in the DO-35 package. Verify pinout compatibility and ensure equivalent power dissipation and voltage tolerance ratings are met by any substitute component.