1N4757AH

Overview

The 1N4757AH is a single silicon planar Zener diode manufactured by Taiwan Semiconductor, designed for voltage regulation and clipping applications. It features a DO-204AL (DO-41) through-hole package with a maximum power dissipation of 1 W at 25°C ambient temperature. The device provides a nominal Zener voltage of 51 V with a tight tolerance of ±5%. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a dynamic impedance of 95 Ω at the test current of 5 mA. It operates within a junction temperature range of -55°C to +150°C and holds AEC-Q101 qualification.

Feature Summary

• Provides precise voltage regulation with ±5% tolerance for stable circuit performance
• Engineered for high-power stabilization and clipping in demanding environments
• Qualified for automotive electronics applications under AEC-Q101 standards

Applications

• Voltage regulation in automotive electronic control units
• Clipping circuits requiring high power ratings
• Stabilizing circuits in industrial equipment

Procurement Notes

Verify manufacturing status directly with the factory as lifecycle information may be incomplete. Confirm RoHS and REACH compliance details prior to integration. Ensure the specific suffix matches design requirements for tolerance and packaging. Validate supply availability through authorized channels before finalizing procurement plans.

Selection Notes

Select this component when a 51 V reference with tighter than standard tolerance is required. The DO-41 package suits through-hole mounting constraints. Consider the AEC-Q101 qualification if the application involves automotive systems. Verify thermal management capabilities align with the 1 W dissipation rating under expected operating conditions.

Part Context

This part belongs to the 1N4757AH series of 1-watt silicon Zener diodes. It shares the base JEDEC designation with other manufacturers but specifies unique parameters such as the ±5% tolerance indicated by the 'A' suffix. The series is widely used for general-purpose voltage regulation where higher precision than standard ±10% devices is necessary.

Replacement Considerations

Cross-reference with 1N4757A from other vendors for equivalent 51 V, 1 W, ±5% specifications. Verify package compatibility and thermal resistance values. Ensure replacement parts meet AEC-Q101 requirements if automotive qualification is mandatory.