1N4680/TR

Overview

The 1N4680/TR is a single Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 2.2 V with a tolerance of ±5%. The device operates in the DO-7-2 (DO-35) axial through-hole package and supports a maximum power dissipation of 500 mW. Key electrical characteristics include a maximum reverse leakage current of 4 µA at 1 V and a forward voltage of 1.1 V at 200 mA. It is rated for an operating temperature range from -65°C to +175°C and is supplied in reel packaging.

Feature Summary

• Provides stable voltage regulation with a nominal 2.2 V Zener breakdown voltage.
• Capable of handling up to 500 mW of power dissipation in a compact axial leaded package.
• Engineered for high thermal stability across a wide industrial temperature range.

Applications

• Voltage reference circuits requiring precise low-voltage regulation.
• Protection against overvoltage transients in sensitive electronic systems.
• Clamping applications in signal processing paths.

Procurement Notes

Verify the specific suffix /TR indicates reel packaging when sourcing. Confirm that the DO-7-2 package dimensions match the target PCB footprint. Ensure the 2.2 V Zener voltage aligns with circuit requirements, as this value is fixed for this part number. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a low-voltage reference near 2.2 V is required in a through-hole design. Consider the 5% tolerance if tighter precision is needed, as other variants may offer different tolerances. Evaluate the 500 mW power rating against expected surge currents. The wide temperature range makes it suitable for harsh environments where standard commercial parts might fail.

Part Context

This part belongs to the standard 1N46xx series of small-signal Zener diodes produced by Microchip Technology. These components are widely used in general-purpose electronics for basic voltage regulation tasks. The 1N4680 variant specifically targets the lower end of the Zener voltage spectrum, offering a stable reference point for analog and digital circuits.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4680 equivalents, such as those from Vishay or ON Semiconductor, provided they meet the 2.2 V, 500 mW, and DO-35 package specifications. Verify pinout compatibility and thermal characteristics before substitution.