BZX79C39

Single Zener Diodes Overview

The BZX79C39 is a silicon unidirectional Zener diode manufactured by Fairchild Semiconductor. It features a nominal Zener voltage of 39 V with a tolerance of ±5%. The device is designed for a maximum power dissipation of 0.5 W and operates within a temperature range of -65 °C to +200 °C. It utilizes the DO-35 glass axial leaded package, providing hermetic sealing for reliable performance in low-power voltage regulation applications.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for environmental protection
• Standardized E24 series voltage grading for consistent selection
• Unidirectional polarity configuration for specific circuit topologies

Single Zener Diodes Applications

• Low voltage stabilizers
• Voltage reference circuits
• General purpose clipping and clamping

Single Zener Diodes Procurement Notes

Verify the manufacturer origin as Fairchild Semiconductor or its successors (e.g., ON Semiconductor) when sourcing. Confirm the package type is DO-35 and the tolerance suffix 'C' indicates the standard ±5% grade. Ensure compliance with relevant RoHS directives if required by the specific production batch specifications.

Single Zener Diodes Selection Notes

Select this component for applications requiring a precise 39 V reference point with moderate power handling capabilities. The DO-35 package offers through-hole mounting convenience. Consider the thermal derating requirements above 25 °C ambient temperature to ensure the 0.5 W limit is not exceeded during continuous operation.

Single Zener Diodes Part Context

This part belongs to the BZX79 series of half-watt Zener diodes. The series covers a wide voltage range from 2.4 V to 75 V. The 'C' suffix specifically denotes the approximate ±5% tolerance variant, distinguishing it from tighter tolerance options like the BZX79-B series.

Single Zener Diodes Replacement Considerations

Compatible substitutes include NXP/Motorola BZX79C39 and Nexperia BZX79-C39. These alternatives share identical electrical characteristics and the DO-35 package form factor.