1N5313-1E3

Overview

The Microchip Technology 1N5313-1E3 is a current regulator diode designed for stable current control across a wide voltage range. It operates with a maximum reverse voltage of 100V and maintains a regulated current of 4.73mA at a power dissipation of 500mW. The device features a high source impedance and utilizes an internal metallurgical bond for reliability. It is available in the DO-204AA (DO-7) axial leaded package, suitable through-hole mounting. The component complies with RoHS standards and is qualified under MIL-PRF-19500/463 specifications.

Feature Summary

• Provides constant current regulation over a broad voltage range as a counterpart to Zener diodes.
• Features high source impedance and internal metallurgical bond for enhanced stability.
• Qualified per MIL-PRF-19500/463 military standards for rugged applications.

Applications

• Current limiting circuits requiring stable performance over varying voltages.
• Biasing networks for transistors and other semiconductor devices.
• Replacement or alternative solutions to Zener diodes in current-regulated designs.

Procurement Notes

Verify that the ordering suffix '-1E3' confirms RoHS compliance, as standard JAN/JANS variants may not meet this requirement. Confirm the package type matches the design, as the base model exists in both axial leaded and surface mount configurations. Ensure the specific revision aligns with MIL-PRF-19500/463 qualification if military-grade reliability is required for the application.

Selection Notes

Select the 1N5313-1E3 when a fixed current of approximately 4.73mA is needed independent of voltage fluctuations up to 100V. Compare against the non-E3 variant if environmental compliance is not a constraint but cost or availability differs. Consider the DO-7 package size constraints versus surface mount alternatives like the UR-1 series if PCB space is limited.

Part Context

This component belongs to the popular 1N5283-1 thru 1N5314-1 series of 0.5 watt current regulators. The series offers currents ranging from 0.22 mA to 4.7 mA in standard 10% tolerances. The 1N5313-1E3 specifically represents the RoHS-compliant version of the 1N5313-1 military qualified part, maintaining the same electrical characteristics while adhering to restricted substance directives.

Replacement Considerations

Direct substitutes include the 1N5313-1 for non-RoHS military applications. For RoHS-compliant commercial equivalents, verify availability of the 1N5313E3. Surface mount replacements in the same family include the 1N5313UR-1, though package changes require PCB redesign.

FAQ

What is the difference between the 1N5313-1 and 1N5313-1E3?

The primary difference is environmental compliance. The -1E3 suffix indicates the device is RoHS compliant, whereas the standard -1 variant may contain restricted substances. Electrical specifications remain identical.

Does the 1N5313-1E3 support MIL-PRF-19500/463 qualification?

Yes, the 1N5313-1E3 is a RoHS-compliant version of the 1N5313-1, which is qualified per MIL-PRF-19500/463. It retains the military-grade reliability and construction features such as the internal metallurgical bond.

What is the typical tolerance for the regulated current?

The 1N5313-1E3 provides a regulated current of 4.73mA with a standard tolerance of 10%, consistent with the broader 1N5283-1 thru 1N5314-1 series specifications.