1N5306UR-1/TR

Overview

The Microchip Technology 1N5306UR-1/TR is a surface-mount current regulator diode housed in a DO-213AB (MELF) package. It provides a nominal regulating current of 2.2 mA with standard 10% tolerance limits. The device operates within a junction temperature range of -65°C to +175°C and supports a maximum working peak voltage of 100 V. Steady-state power dissipation is rated at 500 mW at an ambient temperature of +125°C, derating by 10 mW/°C above this threshold. The unit features a hermetically sealed glass case with internal metallurgical bonding.

Feature Summary

• JEDEC registered surface mount equivalent of the axial-leaded 1N5283 series
• High source impedance for stable current regulation
• Internal metallurgical bond construction
• Non-sensitive to electrostatic discharge

Applications

• Current limiting in electronic circuits
• Biasing active components over broad voltage ranges
• Temperature-compensated reference applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm compliance status and packaging configuration. The 'TR' suffix indicates tape and reel packaging, which differs from bulk options. Ensure that the required reliability level matches the available JAN, JANTX, or commercial grades before finalizing procurement orders.

Selection Notes

Select this component when a surface-mount solution is required for constant current regulation. The DO-213AB package offers a compact footprint suitable for automated assembly. Verify that the thermal resistance characteristics align with the system's heat dissipation capabilities, particularly regarding the junction-to-end cap thermal path during operation.

Part Context

This part belongs to the 1N5283UR-1 through 1N5314UR-1 series of current regulator diodes. The series spans regulating currents from 0.22 mA to 4.7 mA. These devices serve as counterparts to Zener diodes, regulating current over a broad voltage range rather than voltage over a broad current range.

Replacement Considerations

Direct equivalents include other manufacturers' MELF-style current regulators matching the 2.2 mA specification and DO-213AB package dimensions. Axial-leaded versions like the 1N5306-1 provide identical electrical characteristics but require different mounting considerations.