1N4907A/TR

Overview

The 1N4907A/TR is a temperature-compensated Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 12.8 V with a tolerance of ±5%. The device has a power dissipation rating of 400 mW (0.4 W) and operates with a test current of 2 mA. It utilizes a DO-7 through-hole package and exhibits a voltage temperature coefficient of 0.002 %/°C. The component is supplied in a reel packaging format.

Feature Summary

• Temperature compensated design for stable voltage regulation across varying thermal conditions
• Through-hole mounting capability via DO-7 axial leaded package
• Precision voltage tolerance of ±5% at nominal operating point

Applications

• Voltage reference circuits requiring thermal stability
• Overvoltage protection in low-power electronic systems
• Biasing networks in analog signal processing equipment

Procurement Notes

Verify the specific suffix /TR indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status as documentation may vary by production batch. Ensure the DO-7 package dimensions match your PCB footprint requirements. Cross-reference the manufacturer part number to distinguish between bulk and reel supply options. Validate the 12.8 V nominal voltage against your circuit design specifications before integration.

Selection Notes

Select this component when precise voltage regulation is required under fluctuating temperature environments. The 400 mW power rating suits low-current applications where higher dissipation devices are unnecessary. The through-hole construction facilitates manual assembly or prototyping on breadboards. Consider the ±5% tolerance if tighter voltage accuracy is not critical for the target application.

Part Context

This part belongs to the 1N4907 series of temperature-compensated Zener diodes produced by Microchip Technology. These components are designed to minimize voltage drift due to thermal changes, offering superior stability compared to standard Zener diodes. The series typically covers various voltage ranges while maintaining consistent performance characteristics across different operating conditions.

Replacement Considerations

Direct substitutes must match the 12.8 V nominal voltage, 400 mW power rating, and DO-7 package. Verify that alternative manufacturers provide equivalent temperature coefficients and tolerance levels. Ensure pinout compatibility for through-hole mounting. Check for any differences in reverse leakage current specifications that might affect circuit performance.