1N5302UR-1/TR

Overview

The Microchip Technology 1N5302UR-1/TR is a current regulator diode housed in the DO-213AB (MELF, LL41) surface-mount package. It provides a nominal regulating current of 1.50 mA with a tolerance range of 1.35 mA to 1.65 mA at a voltage of 25 V. The device supports a maximum working peak voltage of 100 V and features a minimum regulator impedance of 0.51 MΩ and a minimum knee impedance of 0.105 MΩ. Maximum limiting voltage is specified at 1.6 V. It operates within a junction temperature range of -65 °C to +150 °C and dissipates up to 500 mW.

Feature Summary

• JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series
• Double-plug internal bond construction for high source impedance
• Inherently radiation hard design
• ESD nonsensitive operation

Applications

• Current regulation over broad operating voltage ranges
• Temperature-compensated Zener reference circuits
• Biasing elements for semiconductor devices

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. The TR suffix indicates tape and reel packaging per EIA-481-1-A standards. Confirm RoHS compliance status as it varies by grade. Ensure the procurement matches the required qualification level, such as commercial or military grades like JAN or JANTXV.

Selection Notes

Select this component when a constant current source is required across a wide voltage span. The 1.50 mA nominal current suits low-power biasing applications. Verify that the 100 V peak operating voltage exceeds the circuit's maximum potential. Consider the DO-213AB package dimensions for PCB layout constraints and thermal dissipation requirements up to 500 mW.

Part Context

This part belongs to the 1N5283UR-1 through 1N5314UR-1 family of 0.5 watt current regulators. It serves as the surface-mount counterpart to axial-leaded 1N5283-1 through 1N5314-1 devices. The series offers currents from 0.22 mA to 10.0 mA in standard 10% tolerances, providing a versatile solution for current regulation tasks.

Replacement Considerations

The axial-leaded 1N5302-1 is the direct functional equivalent. Other members of the UR-1 series may be used if the current rating aligns with circuit requirements.