1N5296UR-1/TR

Overview

The Microchip Technology 1N5296UR-1/TR is a current regulator diode in the 1N5283UR-1 through 1N5314UR-1 series, designed for surface-mount applications. It operates within a junction temperature range of -65°C to +175°C and features a steady-state power dissipation of 500 mW at an end cap temperature of +125°C. The device regulates a nominal current of 0.91 mA with a maximum working peak voltage of 100 V. Packaged in a hermetically sealed DO-213AB (MELF) glass case, it provides stable current regulation over a broad operating voltage and temperature range.

Feature Summary

• JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series
• High source impedance for effective current limiting
• Internal metallurgical bond construction
• Non-sensitive to electrostatic discharge

Applications

• Current limiting in electronic circuits
• Constant current sources across broad voltage ranges
• Temperature-compensated reference elements

Procurement Notes

Verify that the ordering suffix matches the required RoHS compliance status, as compliant versions are available only on commercial grade devices. Confirm the specific reliability level (JAN, JANTX, JANTXV, or JANS) if military qualification is necessary for the intended application environment.

Selection Notes

Select this component when a surface-mount solution is required for constant current regulation. Ensure the mounting surface system has a Coefficient of Expansion matching the device's axial coefficient of approximately +6 PPM/°C to maintain mechanical integrity during thermal cycling.

Part Context

This part belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5-watt current regulators. These devices serve as counterparts to Zener diodes by regulating current over a broad voltage range rather than voltage over a current range. The series offers standard 10% tolerances and includes options for various reliability qualifications.

Replacement Considerations

Direct replacements include other parts from the 1N5283UR-1 through 1N5314UR-1 series with identical package and electrical characteristics. Verify that any substitute maintains the same DO-213AB MELF package dimensions and thermal resistance specifications.

FAQ

What is the minimum dynamic impedance for the 1N5296UR-1?

The minimum dynamic impedance (zs) at VS = 25 V is 0.880 MΩ.

How is polarity indicated on the 1N5296UR-1?

Polarity is indicated by a cathode band; the device must be operated with the banded (cathode) end negative.

Is the 1N5296UR-1 inherently radiation hard?

Yes, the device is described as inherently radiation hard in Microsemi MicroNote 050.