1N4932

Overview

The Microchip Technology 1N4932 is a general-purpose silicon rectifier diode designed for low-voltage, high-current applications. It features a maximum average forward rectified current of 1.0 A and a peak repetitive reverse voltage rating of 100 V. The device utilizes a DO-201AD axial leaded package, suitable for through-hole mounting on printed circuit boards. Key electrical characteristics include a maximum RMS voltage of 70 V and a non-repetitive peak forward surge current capability of 30 A at 60 Hz for an 8.3 ms single half-sine-wave impulse. The component operates within a junction temperature range of -65°C to +175°C, ensuring reliability in demanding thermal environments.

Feature Summary

• High current handling capability with a 1.0 A average forward rectified current rating
• Robust surge protection supporting up to 30 A non-repetitive peak forward surge current
• Wide operating temperature range extending from -65°C to +175°C junction temperature
• Standardized axial leaded construction for reliable through-hole PCB integration

Applications

• General-purpose rectification in power supply circuits
• Bridge rectifier configurations for AC to DC conversion
• Protection against reverse polarity in DC input lines
• Freewheeling diodes in inductive load switching applications

Procurement Notes

Verify the specific suffix (e.g., B, G) against the manufacturer datasheet to confirm compliance with RoHS directives and halogen-free requirements. Confirm that the DO-201AD package dimensions match the target footprint. Ensure the selected variant meets the required thermal derating curves for the intended operating environment. Cross-reference the part number with official Microchip documentation to validate availability status and production lifecycle stage before finalizing procurement plans.

Selection Notes

Select this component when designing circuits requiring robust 1 A rectification with high surge tolerance. The 100 V reverse voltage rating provides adequate margin for standard low-voltage DC systems. Consider the axial leaded package for applications prioritizing mechanical stability over space constraints. Evaluate thermal management needs based on the specified junction temperature limits and power dissipation characteristics under continuous load conditions.

Part Context

This diode belongs to the standard 1N400x series family of silicon rectifiers, widely utilized in consumer electronics and industrial equipment. The 1N4932 specifically offers higher current capacity compared to lower-rated variants in the same series. It serves as a fundamental discrete semiconductor component for basic power conversion tasks. The device represents a mature technology platform with established manufacturing processes and extensive historical usage data across various electronic industries.

Replacement Considerations

Equivalent parts include the 1N4004 and 1N5391, provided they meet the 1 A current and 100 V reverse voltage specifications. Verify package compatibility and pinout alignment before substitution. Ensure replacement components maintain identical thermal ratings and surge current capabilities to preserve circuit integrity and safety margins.