1N4762AH

Overview

The 1N4762AH is a silicon Zener diode manufactured by Taiwan Semiconductor Corporation. It features an 82V nominal Zener voltage with a 5% tolerance and a 1W maximum power dissipation rating. The device utilizes the DO-204AL (DO-41) axial leaded package, designed for through-hole mounting. It operates within a temperature range of -65°C to +175°C junction temperature. The component is unidirectional and constructed using single-element silicon technology.

Feature Summary

• Provides stable voltage regulation at 82V with tight manufacturing tolerances
• Capable of handling 1W power dissipation in standard axial packages
• Engineered for high-temperature operation up to 175°C junction temperature
• Utilizes hermetically sealed or plastic encapsulated construction options

Applications

• Voltage reference circuits requiring precise 82V levels
• Overvoltage protection stages in power supply inputs
• Clamping applications in signal conditioning paths
• General-purpose voltage regulation in industrial electronics

Procurement Notes

Verify the specific suffix designation against official datasheets to confirm material composition and screening level. The 'A' prefix typically indicates military-grade screening or specific reliability standards distinct from commercial variants. Confirm RoHS compliance status as historical military parts may not meet current environmental directives. Ensure the supplier provides traceability documentation matching the manufacturer's original lot codes.

Selection Notes

Select this component when a robust 82V regulation point is required in high-reliability environments. The axial DO-41 package offers superior thermal performance compared to surface-mount alternatives for high-power dissipation scenarios. Consider the operating temperature range and mechanical stress requirements during PCB layout. Verify that the circuit current limits align with the device's maximum power dissipation capabilities under worst-case thermal conditions.

Part Context

This part belongs to the standard 1N47xx series of 1-watt Zener diodes, widely used in discrete semiconductor applications. Taiwan Semiconductor produces this variant alongside other manufacturers offering equivalent JEDEC specifications. The series covers a broad voltage range, with the 1N4762 specifically targeting the 82V segment. It serves as a fundamental building block for analog and power management designs requiring reliable voltage clamping.

Replacement Considerations

Equivalent parts include the 1N4762A from other manufacturers such as Microsemi or Vishay, provided they match the 82V/1W/5% specifications. Cross-reference package dimensions and pin configurations to ensure mechanical compatibility. Verify electrical parameters like dynamic impedance and test current to maintain circuit performance integrity.