1N5297UR-1/TR

Overview

The Microchip Technology 1N5297UR-1/TR is a surface-mount current regulator diode housed in the DO-213AB (MELF) package. It provides a nominal regulating current of 1.0 mA with standard tolerances ranging from 0.900 mA to 1.100 mA at a test voltage of 25 V. The device features a maximum limiting voltage of 1.35 V and supports a peak operating voltage of 100 V. Designed for high source impedance applications, it operates within a junction temperature range of -65 °C to +150 °C and dissipates up to 500 mW.

Feature Summary

• Double-plug internal metallurgical bond construction
• High source impedance for stable regulation
• Inherently radiation hard design
• ESD nonsensitive operation

Applications

• Current limiting circuits requiring broad voltage range stability
• Temperature-compensated reference designs
• Biasing networks for semiconductor devices

Procurement Notes

Verify that the ordering suffix /TR indicates tape and reel packaging per EIA-481-1-A standards. Confirm military qualification levels such as JANTX match specific project requirements. Ensure the hermetically sealed glass case meets environmental sealing criteria. Validate terminal finish options against RoHS compliance needs if applicable.

Selection Notes

Select this component when a surface-mount equivalent to axial-leaded current regulators is required. The DO-213AB package suits automated assembly processes. Consider the 100 V peak operating voltage for high-voltage biasing tasks. Evaluate thermal resistance characteristics for power dissipation limits above 125 °C.

Part Context

This part belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5 watt current regulators. It serves as the JEDEC registered surface mount counterpart to the 1N5283 through 1N5314 axial series. The device offers an extensive selection of currents from 0.22 mA to 10.0 mA in standard 10% tolerances.

Replacement Considerations

The 1N5297-1 is the axial-leaded equivalent. Verify package compatibility and mounting surface expansion coefficients when substituting.