1N4906/TR

Overview

The 1N4906/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 is designed for through-hole mounting in DO-7 axial packages and dissipates up to 400 mW. Key electrical characteristics include a maximum reverse leakage current of 15 µA, a Zener impedance of 100 Ohms, and a test current of 2 mA. It operates within a wide temperature range from -65°C to +175°C and utilizes reel packaging.

Feature Summary

• Temperature compensated design ensures stable voltage regulation across varying thermal conditions
• Single configuration optimized for precision voltage reference applications
• Wide operating temperature range supports reliability in extreme environments

Applications

• Precision voltage reference circuits requiring low temperature drift
• Voltage regulator designs utilizing temperature compensation
• Test and measurement equipment demanding stable reference voltages

Procurement Notes

Verify the specific suffix /TR indicates reel packaging when ordering. Confirm that the DO-7 package dimensions match your PCB footprint requirements. Ensure the 12.8 V nominal voltage aligns with your circuit design specifications. Check for any RoHS compliance documentation if required by your manufacturing standards. Validate the manufacturer part number against official Microchip databases before procurement.

Selection Notes

Select this component when a stable 12.8 V reference is needed with minimal temperature coefficient. Compare the 100 Ohm Zener impedance against other models if low dynamic resistance is critical. Consider the 400 mW power dissipation limit for thermal management in your enclosure. The through-hole DO-7 package requires appropriate hole spacing on your board layout.

Part Context

This component belongs to the 1N49xx series of temperature-compensated Zener diodes produced by Microchip Technology. These devices are engineered to provide superior voltage stability compared to standard Zener diodes by utilizing complementary transistor pairs to cancel out temperature effects. The series is commonly used in high-precision analog circuits where voltage drift must be minimized over wide temperature ranges.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.