1N963BTR

Single Zener Diodes Overview

The Fairchild Semiconductor 1N963BTR is a silicon unidirectional Zener diode housed in the DO-35 axial leaded glass package. It provides a nominal reference voltage of 12 V with a maximum power dissipation of 0.4 W at 25°C. The device features a standard voltage tolerance of ±5% and a maximum dynamic impedance of 12 Ω. It operates within a junction temperature range up to 175°C and supports storage temperatures from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a unidirectional silicon Zener structure
• Encased in a hermetically sealed axial-leaded glass DO-35 package for environmental protection
• Designed for reliable operation across extended industrial temperature ranges

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify the specific manufacturer datasheet for the 1N963BTR variant, as documentation may vary between Fairchild Semiconductor and other suppliers like Central Semiconductor. Confirm RoHS compliance status and exact power ratings (0.4W vs 0.5W) against the official component specification sheet before integration into designs.

Single Zener Diodes Selection Notes

Select this component when a 12 V Zener voltage is required in a through-hole DO-35 package. Ensure the application current does not exceed limits defined by the 0.4 W power dissipation rating. Verify that the ±5% tolerance aligns with circuit precision requirements and that the 12 Ω dynamic impedance is acceptable for the intended regulation performance.

Single Zener Diodes Part Context

This part belongs to the standard 1N963 series of half-watt Zener diodes. The 'B' suffix typically denotes a ±5% voltage tolerance. The 'TR' suffix indicates tape and reel packaging, suitable for automated surface mount or through-hole assembly processes. These diodes are widely used in general-purpose electronics for voltage stabilization.

Single Zener Diodes Replacement Considerations

Cross-reference with 1N963B or 1N963BTRPBFREE for equivalent electrical characteristics. Ensure substitute parts match the DO-35 package dimensions and maintain the same 12 V nominal voltage and power handling capabilities.