1N5302/TR

Overview

The 1N5302/TR is a current regulator diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AB (SMB) package. It provides a regulated current of 1.65 mA with a maximum peak operating voltage of 100 V and a power dissipation rating of 475 mW. The device features a maximum limiting voltage of 1.6 V and operates within a temperature range of -65°C to +175°C. Key electrical characteristics include a minimum dynamic impedance of 510 kΩ and a minimum knee impedance of 105 kΩ. This component is supplied in tape and reel packaging.

Feature Summary

• Provides stable current regulation suitable for biasing circuits
• Operates at high temperatures up to 175°C junction temperature
• Surface-mount design for automated assembly processes

Applications

• Biasing networks for transistors and integrated circuits
• Current limiting protection in electronic circuits
• Reference current sources in analog signal processing

Procurement Notes

Verify the specific suffix /TR confirms the tape and reel packaging format required for automated surface-mount assembly. Confirm that the DO-213AB package dimensions align with the target PCB footprint. Ensure the 1.65 mA regulation current meets the circuit requirements without excessive voltage drop across the regulator.

Selection Notes

Select this component when a fixed low-current source is needed in a compact surface-mount form factor. Compare the 1.65 mA output against other variants in the 1N53xx series if different current levels are required. Verify that the 100 V breakdown voltage is sufficient for the application's supply voltage headroom.

Part Context

This part belongs to the 1N53xx series of current regulator diodes produced by Microchip Technology. The series offers various fixed current values ranging from approximately 0.5 mA to 10 mA. The 1N5302 variant specifically targets the 1.65 mA regulation point, providing a standardized solution for constant current applications.

Replacement Considerations

Direct substitutes include other 1N5302 variants such as the through-hole 1N5302 or the SMD 1N5302UR-1/TR, provided the package type matches the assembly process. Cross-reference with generic SMB current regulator diodes offering identical 1.65 mA regulation and 100 V voltage ratings.