1N4751A-T50A

Overview

The onsemi 1N4751A-T50A is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and operates within an extended temperature range from -65 °C to +200 °C. Packaged in the DO-41 axial through-hole format, it exhibits a maximum reverse leakage current of 5 µA at 22.8 V and a Zener impedance of 40 Ohms at a test current of 8.5 mA.

Feature Summary

• Provides stable voltage regulation via avalanche breakdown characteristics in the reverse bias region.
• Utilizes a glass-passivated junction structure to ensure long-term reliability under thermal stress.
• Supports high operating temperatures up to 200 °C for demanding industrial environments.

Applications

• General-purpose voltage reference circuits
• Overvoltage protection stages
• Power supply output regulation

Procurement Notes

Verify the specific suffix T50A against the manufacturer's official datasheet to confirm packaging details and compliance status. Ensure the procurement channel provides valid traceability documentation. Cross-reference the component marking with the official part identification guide to prevent counterfeit substitution during acquisition.

Selection Notes

Select this component when a precise 30 V regulation point is required in a through-hole design. The 1 W power rating allows for moderate current handling without external heat sinks. Verify that the circuit's expected current draw remains below the maximum test current limits to maintain accurate voltage stability.

Part Context

This component belongs to the standard 1N47xxA series of Zener diodes manufactured by onsemi. The series utilizes a consistent DO-41 package geometry across various voltage ratings. The 1N4751A designation specifically identifies the 30 V variant within this established product line.

Replacement Considerations

Direct substitutes include the Fairchild Semiconductor 1N4751A-T50A and the Taiwan Semiconductor 1N4751A. These alternatives share identical electrical specifications and mechanical dimensions for pin-compatible integration.