1N5310UR-1/TR

Overview

The Microchip Technology 1N5310UR-1/TR is a surface-mount current regulator diode in the DO-213AB (MELF) package. It provides a nominal regulating current of 3.30 mA with a tolerance range of 2.970 mA to 3.630 mA at a regulator voltage of 25 V. The device features a minimum regulator impedance of 3.63 MΩ and a maximum knee impedance of 0.024 MΩ. It operates within a junction temperature range of -65°C to +150°C, dissipates up to 500 mW, and withstands a peak operating voltage of 100 V.

Feature Summary

• JEDEC registered surface mount equivalent of the 1N5310 series
• Hermetically sealed glass case with internal metallurgical bond
• High source impedance for stable current regulation
• Inherently radiation hard construction

Applications

• Current limiting in electronic circuits
• Biasing active components over broad voltage ranges
• Constant current sources for sensors or LEDs

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm material composition and compliance status. Ensure the procurement channel is an authorized distributor to guarantee authenticity. Confirm that the delivered component matches the exact part number and package type specified in the design requirements before integration.

Selection Notes

Select this component when a precise constant current is required across varying load voltages. The 3.30 mA nominal value suits applications needing moderate bias currents. Verify that the circuit's peak voltage does not exceed 100 V and that power dissipation remains within the 500 mW limit at the highest expected ambient temperature.

Part Context

This device belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5 W current regulators. It serves as the surface-mount counterpart to axial-leaded 1N5310-1 devices. The series offers a wide selection of regulating currents from 0.22 mA to 10.0 mA in standard 10% tolerances.

Replacement Considerations

The axial-leaded 1N5310-1 is the direct functional equivalent. Other series members like 1N5309UR-1 or 1N5311UR-1 may substitute if different current values are acceptable.