1N5313UR-1/TR

Overview

The Microchip Technology 1N5313UR-1/TR is a surface-mount current regulator diode housed in the DO-213AB (MELF, LL41) glass package. It provides a nominal regulating current of 4.73 mA with a maximum working peak voltage of 100 V and steady-state power dissipation of 500 mW. The device operates within a junction temperature range of -65°C to +175°C. Qualified per MIL-PRF-19500/463, it offers high source impedance and internal metallurgical bonding for reliable performance.

Feature Summary

• Hermetically sealed glass MELF package with double-plug internal bond connection
• Qualified per MIL-PRF-19500/463 for JAN, JANTX, JANTXV, and JANS levels
• High source impedance and inherent radiation hardness

Applications

• Current limiting circuits requiring broad operating voltage ranges
• Temperature-compensated reference circuits
• Biasing networks for transistors and integrated circuits

Procurement Notes

Verify the specific qualification level required for your application, as the base part number covers multiple military grades including JAN, JANTX, JANTXV, and JANS. Confirm that the trailing UR-1 designation matches the intended metallurgically bonded surface mount variant. Ensure the ordering suffix aligns with the desired packaging configuration and compliance status before finalizing procurement.

Selection Notes

Select this component when a constant current source is needed over a wide voltage span rather than a fixed voltage drop. The 4.73 mA nominal current suits applications requiring moderate bias currents. Consider the DO-213AB package dimensions and thermal resistance characteristics during layout. Verify that the system's ambient temperature remains within the specified -65°C to +175°C operational range.

Part Context

This device belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5-watt current regulators. It serves as the JEDEC registered surface-mount equivalent to the axial-leaded 1N5283 through 1N5314 series. The series provides a selection of currents ranging from 0.22 mA to 4.7 mA in standard 10% tolerances.

Replacement Considerations

The axial-leaded 1N5313 is the direct functional equivalent in a different package. For surface-mount replacements, verify compatibility with other manufacturers' DO-213AB current regulator diodes having identical 4.73 mA regulation and 100 V ratings.