1N5297-1E3

Overview

The Microchip Technology 1N5297-1E3 is a current regulator diode belonging to the 1N5283-1 through 1N5314-1 series. It provides a regulated current of 1 mA with a standard tolerance of 10%. The device features a maximum voltage rating of 1.35 V and operates within a power dissipation range up to 500 mW. It utilizes a DO-7 axial leaded package, suitable for through-hole mounting. Qualified per MIL-PRF-19500/463, it offers robust performance in military and aerospace applications.

Feature Summary

• Provides stable current regulation over a broad voltage range
• Hermetically sealed construction for harsh environments
• DO-7 packaging with double-plug internal bond connection

Applications

• Military electronic systems requiring reliable current limiting
• Aerospace instrumentation circuits
• High-reliability industrial control equipment

Procurement Notes

Verify the specific suffix -1E3 against official Microchip documentation to confirm RoHS compliance status and exact manufacturing lot traceability. Ensure the ordering part number matches the required qualification level (JANTX) for your application's environmental specifications. Cross-reference with the latest datasheet revision to confirm package dimensions and terminal configurations before procurement.

Selection Notes

Select this component when a constant current source is required instead of voltage regulation. The 1 mA output current suits low-power signal conditioning or LED biasing where precise current control is critical. Consider the 10% tolerance and 500 mW power dissipation limits during thermal design. Verify that the operating voltage does not exceed the 1.35 V limit to ensure proper regulation functionality.

Part Context

This device is part of the widely used 1N5283-1 through 1N5314-1 series of current regulator diodes. These components serve as counterparts to Zener diodes, regulating current rather than voltage. The series is available in various current ratings from 0.22 mA to 4.7 mA, offering designers flexibility in selecting appropriate current levels for different circuit requirements while maintaining similar physical package sizes.

Replacement Considerations

Compatible substitutes include JANTX1N5297UR and JANTX1N5297-1 from manufacturers such as Compensated Devices Inc, MACOM, and Aeroflex Metelics. Ensure any replacement maintains the same 1 mA current rating, 1.35 V voltage limit, and DO-7 package form factor. Verify that alternative sources meet the same MIL-PRF-19500/463 qualification standards.