1N4757A R1G

Overview

The 1N4757AHR1G is a single-channel Zener diode manufactured by Taiwan Semiconductor, designed for voltage regulation and clipping applications. It features a nominal Zener voltage of 51 V with a tight tolerance of ±5%. The device operates in the DO-41 (DO-204AL) through-hole package and dissipates up to 1 W of power. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 95 Ω at a test current of 5 mA. It supports an operating temperature range from -55 °C to +150 °C and holds AEC-Q101 qualification.

Feature Summary

• Provides stable voltage regulation with a nominal 51 V output and ±5% tolerance.
• Engineered for high-reliability environments with AEC-Q101 automotive qualification.
• Utilizes a standard DO-41 through-hole package for robust mechanical mounting.

Applications

• Voltage regulation in automotive electronic systems
• Clipping circuits requiring precise voltage thresholds
• General-purpose power supply stabilization

Procurement Notes

Verify component authenticity and lot traceability directly with the manufacturer or authorized distributors. Confirm that the specific suffix HR1G corresponds to the required reel packaging configuration and RoHS compliance status. Ensure the procurement channel provides valid documentation matching the AEC-Q101 qualification requirements for automotive-grade reliability standards.

Selection Notes

Select this component when a 51 V reference with strict ±5% tolerance is required in a through-hole design. The AEC-Q101 qualification makes it suitable for automotive applications where higher reliability than standard industrial grades is necessary. Consider the 1 W power dissipation limit and thermal management requirements for the specific circuit layout.

Part Context

This part belongs to the 1N4757AH series of silicon planar power Zener diodes. The 'A' suffix denotes the tighter ±5% voltage tolerance compared to the standard ±10% version. The 'HR1G' suffix indicates the specific high-reliability screening and tape-and-reel packaging format provided by Taiwan Semiconductor.

Replacement Considerations

Cross-reference with Vishay 1N4757A-TR or LGE 1N4757A for similar specifications. Verify that substitute parts match the 51 V nominal voltage, ±5% tolerance, and DO-41 package dimensions. Note that some equivalents may offer different power ratings or temperature ranges.