1N3003RB

Overview

The Microchip Technology 1N3003RB is a single Zener diode with an 82 V nominal reference voltage and ±5% tolerance. It features a maximum power dissipation of 10 W and operates within a temperature range of -65°C to 175°C. The device utilizes a DO-203AA (DO-4) stud mount package, designed for chassis mounting applications.

Feature Summary

• High power dissipation capability of 10 W for robust voltage regulation
• Extended operating temperature range from -65°C to 175°C
• Precision voltage tolerance of ±5% at the nominal Zener voltage

Applications

• Chassis-mounted voltage regulation circuits
• Industrial power supply protection
• High-reliability aerospace systems

Procurement Notes

Verify the specific suffix RB indicates the standard commercial grade configuration as documented by Microchip Technology. Confirm the DO-203AA package style matches the required chassis mounting hardware. Ensure the ±5% tolerance specification aligns with the circuit design requirements before procurement.

Selection Notes

Select this component when a high-power 10 W Zener diode is required for stable voltage clamping in harsh environments. The wide temperature range supports operation in extreme thermal conditions. The stud mount package facilitates efficient heat dissipation through direct chassis attachment.

Part Context

This part belongs to the 1N3003 series of single Zener diodes manufactured by Microchip Technology. The series offers various voltage options with consistent 10 W power handling capabilities. The RB suffix denotes the specific packaging and tolerance configuration for this variant.

Replacement Considerations

Cross-reference with other manufacturers offering 82 V, 10 W Zener diodes in DO-203AA packages. Verify that substitute parts meet the same ±5% tolerance and 175°C maximum junction temperature specifications.