1N5306-1

Overview

The Microchip Technology 1N5306-1 is a silicon current regulator diode designed for stable current control across wide voltage ranges. It features a maximum reverse voltage of 100V and a nominal regulating current of 2.2mA with standard 10% tolerance. The device supports a maximum power dissipation of 0.5W and operates within a junction temperature range of -65°C to +175°C. Packaged in the axial DO-7 leaded format, it utilizes internal metallurgical bonding for reliability.

Feature Summary

• Provides constant current regulation over a broad voltage range as an alternative to Zener diodes.
• Features high source impedance for effective current limiting applications.
• Includes internal metallurgical bond connection for enhanced structural integrity.

Applications

• Constant current sources for LED driving or biasing circuits.
• Current limiting protection in sensitive electronic loads.
• Biasing elements in transistor amplifier stages.

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as JANTX1N5306-1 indicate military qualification levels under MIL-PRF-19500/463. Confirm package type requirements, as surface mount equivalents exist in the UR-1 series. Ensure environmental compliance needs are met, noting that commercial RoHS versions may carry different suffixes like E3.

Selection Notes

Select this component when a fixed current sink is required independent of supply voltage fluctuations. Compare against Zener diodes if voltage regulation is not the primary goal. Consider the DO-7 package size constraints versus the smaller DO-213AB SMT option if board space is limited. Verify thermal management capabilities given the 0.5W power rating at elevated temperatures.

Part Context

This part belongs to the 1N5283-1 through 1N5314-1 series of 0.5-watt current regulators. The series offers currents ranging from 0.22 mA to 4.7 mA in 10% tolerances. These devices serve as counterparts to Zener diodes, regulating current rather than voltage, while maintaining similar axial-leaded package footprints for easy integration into existing designs.

Replacement Considerations

Direct functional substitutes include other parts from the 1N53xx-1 series with matching 2.2mA ratings. For surface mount replacements, consider the 1N5306UR-1 variant. Military-grade equivalents are available under JAN or JANTX prefixes, ensuring compatibility with radiation and temperature specifications defined by MIL-PRF-19500/463.