1N5308UR-1

Overview

The 1N5308UR-1 is a silicon current regulator diode manufactured by Microchip Technology in the DO-213AB MELF-2 surface-mount package. It provides a regulated source current of 2.7 mA with a maximum limiting voltage of 2.15 V. The device features an isolated case connection and metallurgical bonding within a glass encapsulation. Designed for high source impedance applications, it operates as a single-element component suitable for broad voltage range regulation.

Feature Summary

• Internal metallurgical bond construction
• High source impedance characteristics
• Isolated case connection

Applications

• Constant current sources
• Current limiting circuits
• Biasing networks

Procurement Notes

Verify the specific ordering suffix to confirm qualification level and packaging format. Commercial versions differ from military-grade variants such as JANTX or JANS. Confirm RoHS compliance status and ensure the supplier provides official datasheets matching the exact part number designation before procurement.

Selection Notes

Select this component when a stable 2.7 mA current is required across a wide voltage differential up to 100 V. Ensure the DO-213AB footprint matches the PCB layout. Consider thermal derating if operating near the maximum junction temperature limit of 175 C.

Part Context

This device belongs to the 1N5283UR-1 through 1N5314UR-1 series of 0.5 W current regulators. The series offers various current options ranging from 0.22 mA to 10 mA in standard 10% tolerances. These devices serve as counterparts to Zener diodes but regulate current over a broad voltage range rather than voltage over a broad current range.

Replacement Considerations

Compatible substitutes include other parts within the 1N53xxUR-1 series that match the 2.7 mA specification. Verify pinout compatibility and package dimensions when substituting.