1N5308/TR

Overview

The 1N5308/TR is a current regulator diode manufactured by Microchip Technology. It provides a regulated current of 2.97 mA with a maximum limiting voltage of 2.15 V and a peak operating voltage of 100 V. The device operates within a temperature range of -65°C to +175°C TJ. It features high source impedance, minimum dynamic impedance of 510 kOhms, and minimum knee impedance of 105 kOhms. Packaged in DO-213AB (SMD), it dissipates up to 475 mW.

Feature Summary

• Regulates current over a broad voltage range
• High source impedance for stable operation
• Internal metallurgical bond connection

Applications

• Constant current sources
• Current limiting circuits
• Biasing elements for transistors or LEDs

Procurement Notes

Verify the specific suffix /TR indicates tape and reel packaging configuration. Confirm the manufacturer designation matches Microchip Technology requirements. Ensure the DO-213AB package type aligns with PCB layout constraints. Validate that the 2.97 mA regulation current meets circuit design specifications before procurement.

Selection Notes

Select this component when a constant current sink is required in a surface-mount application. The wide operating temperature range supports harsh environments. Verify that the 100 V peak voltage rating exceeds the maximum potential difference across the device in the target circuit configuration.

Part Context

This part belongs to the 1N5283-1 through 1N5314-1 series of 0.5 watt current regulators. These devices serve as counterparts to Zener diodes, regulating current rather than voltage. The series offers various current values in standard tolerances within similar axial or surface-mount packages.

Replacement Considerations

Check for direct equivalents within the 1N53xxUR-1 series from Microchip. Verify pinout compatibility for DO-213AB packages. Ensure replacement parts maintain the 2.97 mA regulation current and 100 V peak voltage limits.