1N4761A-T

Overview

The Vishay 1N4761A-T is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 75 V with a tolerance of ±5%. The component operates in the DO-41 axial through-hole package and dissipates up to 1 W of power at 25°C ambient temperature. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 76 V, a Zener impedance of 3000 Ω, and a forward voltage of 1.2 V at 200 mA. It supports a junction temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation using a single unidirectional Zener configuration
• Features built-in strain relief within the molded glass DO-41 case
• Ensures high-temperature soldering reliability up to 260°C

Applications

• General-purpose voltage reference circuits
• Overvoltage protection stages
• Biasing networks in analog electronics

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging rather than bulk or ammo pack formats when sourcing. Confirm RoHS compliance status as historical data varies by manufacturing era. Ensure the supplier provides official datasheets confirming the 3000 Ω Zener impedance value, which differs from other variants in the series.

Selection Notes

Select this component for designs requiring a 75 V regulation point in through-hole layouts. Compare against the 1N4761A-E3/61 if surface-mount DO-214AC packaging is preferred instead. Consider the higher Zener impedance of 3000 Ω compared to other 1W variants, which may impact dynamic regulation performance in low-current applications.

Part Context

This part belongs to the standard 1N47xx series of 1 Watt Zener diodes manufactured by Vishay General Semiconductor. These components are widely used in industrial and consumer electronics for basic voltage clamping and reference tasks. The DO-41 package is a legacy axial form factor compatible with standard PCB drilling and manual assembly processes.

Replacement Considerations

Direct substitutes include the 1N4761A (bulk) and 1N4761A-TAP/5K. Cross-manufacturer equivalents such as Fairchild or Panjit versions share identical electrical specifications but may differ in mechanical dimensions or lead finish.