1N4685-TP

Overview

The 1N4685-TP is a silicon unidirectional voltage regulator diode manufactured by Micro Commercial Components. It provides a nominal Zener voltage of 3.6 V with a standard tolerance of ±5%. The device operates within a maximum steady-state power dissipation of 500 mW at lead temperatures below 75°C and supports junction temperatures up to 200°C. Electrical characteristics include a maximum forward voltage of 1.5 V at 100 mA and a reverse leakage current of 7.5 µA measured at the rated voltage. The component utilizes a DO-35 glass axial package.

Feature Summary

• Features a very sharp reverse characteristic for precise voltage regulation
• Constructed with a double slug type, hermetically sealed glass case
• Includes an internal metallurgical bond option for high reliability

Applications

• Voltage regulation in electronic circuits
• Protection against voltage transients
• Reference voltage generation

Procurement Notes

Verify authenticity through authorized distributors or direct manufacturer channels due to industry counterfeiting risks. Confirm compliance with RoHS standards if applicable, noting that specific suffixes may indicate lead-free finish variations. Ensure ordering specifications match required packaging formats such as tape and reel or bulk quantities before finalizing procurement.

Selection Notes

Select this component when a stable 3.6 V reference is required in low-power applications. Consider the 500 mW power rating and DO-35 package constraints for thermal management. Evaluate the ±5% voltage tolerance against circuit requirements. Verify operating temperature limits align with the intended environment.

Part Context

This part belongs to the 1N4678 through 1N4717 series of 500 mW silicon Zener diodes produced by Micro Commercial Components. The series covers a wide range of Zener voltages from 1.8 V to 43 V. These components are designed for general-purpose voltage regulation tasks requiring reliable performance in standard through-hole configurations.

Replacement Considerations

Cross-reference with other manufacturers' 1N4685 equivalents ensuring identical 3.6 V nominal voltage, 500 mW power rating, and DO-35 package compatibility. Verify electrical parameters such as leakage current and impedance match application requirements.