1N5313-1/TR

Overview

The Microchip Technology 1N5313-1/TR is a surface-mount current regulator diode housed in the DO-213AB (MELF, LL41) package. It provides a regulated current of 4.73 mA with a maximum power dissipation of 500 mW. The device supports a peak operating voltage of 100 V and operates within an extended temperature range from -65°C to +175°C junction temperature. This component belongs to the MIL-PRF-19500/463 military series and is supplied in tape and reel packaging for automated assembly processes.

Feature Summary

• Provides stable current regulation suitable for biasing applications
• Designed for high-reliability environments meeting military standards
• Utilizes glass-passivated MELF construction for robust surface-mount integration

Applications

• Biasing circuits for transistors and other semiconductor devices
• Current limiting protection in sensitive electronic pathways
• Reference current sources in precision measurement instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm compliance with MIL-PRF-19500/463 requirements. Ensure that the tape and reel configuration matches your automated placement equipment specifications. Confirm that the component lot meets all necessary environmental and quality certifications prior to procurement.

Selection Notes

Select this component when a fixed current source is required in a compact surface-mount form factor. The 4.73 mA rating suits low-power biasing needs where stability across wide temperature variations is critical. Consider the 100 V peak voltage capability for applications requiring higher breakdown margins compared to standard low-voltage regulators.

Part Context

This part is part of the 1N5313 series of current regulator diodes manufactured by Microchip Technology. It shares functional characteristics with through-hole variants like the 1N5313 but offers a different mechanical footprint optimized for SMT production lines. The -1 suffix typically denotes specific military or enhanced reliability grades within the product family.

Replacement Considerations

Direct substitutes include the JAN1N5313UR-1 and CDLL5313e3/TR, which offer similar electrical parameters in compatible packages. Verify pinout compatibility and thermal performance before substituting. Alternative packages may require PCB layout adjustments.