1N3015B

Overview

The 1N3015B is a unidirectional voltage regulator diode manufactured by Microchip Technology, originally specified under Motorola/NXP documentation. It utilizes silicon technology and is housed in a DO-4 metal post/stud mount package. The device is rated for a maximum power dissipation of 10 W and operates within a temperature range of -65 °C to +175 °C. Key electrical characteristics include a maximum dynamic impedance of 300 Ω and a knee impedance of up to 2000 Ω.

Feature Summary

• Unidirectional voltage regulation capability using silicon components
• Robust thermal management via metal case construction
• High-temperature operational stability suitable for demanding environments

Applications

• Voltage regulation in high-power industrial circuits
• Overvoltage protection systems requiring robust thermal handling
• Power supply stabilization in extreme temperature conditions

Procurement Notes

Verify the manufacturer lineage carefully, as the 1N3015B originates from Motorola/NXP specifications. Confirm that the specific lot or revision supplied by Microchip aligns with the original DO-4 mechanical and electrical standards. Ensure compatibility with existing thermal mounting solutions designed for stud-mount configurations.

Selection Notes

Select this component when high power dissipation and wide temperature tolerance are required. The DO-4 package necessitates specific mounting hardware for effective heat sinking. Evaluate the dynamic impedance requirements against the load sensitivity to ensure stable regulation performance under varying current conditions.

Part Context

This part belongs to the legacy voltage regulator diode category, historically associated with Motorola and NXP before being carried by other manufacturers like Microchip. It represents a standard through-hole solution for applications requiring significant power handling capabilities compared to modern surface-mount alternatives.

Replacement Considerations

Direct substitutes must match the DO-4 package and 10 W power rating. Verify equivalent Zener voltage and impedance characteristics. Cross-reference with original Motorola/NXP datasheets to confirm pinout and thermal resistance parameters.