1N483

Overview

The Microchip Technology 1N483 is a single standard recovery rectifier diode designed for through-hole mounting in the DO-7 package. It features a maximum repetitive peak reverse voltage of 70 V and an average forward rectified current of 100 mA. The device dissipates up to 500 mW of power and withstands a maximum surge current of 2 A. Operating temperatures range from -65 °C to +175 °C, with a typical forward voltage drop of 1 V and a maximum reverse leakage current of 100 µA.

Feature Summary

• Standard recovery rectification capability suitable for general-purpose signal or computer applications
• High thermal stability supporting operation up to +175 °C junction temperature
• Robust surge current handling rated at 2 A for transient protection

Applications

• General-purpose rectification in low-power electronic circuits
• Signal processing and computer logic interface protection
• DC power supply input stages requiring small-signal isolation

Procurement Notes

Verify the specific suffix (e.g., A, B) against the datasheet to confirm exact electrical tolerances, as generic part numbers may encompass multiple variants. Confirm RoHS compliance status directly with the manufacturer, as historical data indicates non-compliance for some legacy versions. Ensure the DO-7 through-hole package matches the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when a standard recovery time is sufficient for frequencies below typical switching thresholds. The 70 V reverse voltage rating limits suitability for high-voltage mains applications. Consider the 100 mA continuous current limit for load requirements. The wide operating temperature range makes it appropriate for industrial environments where extreme cold or heat exposure is expected during operation.

Part Context

The 1N483 belongs to the JEDEC-standardized 1N series of silicon planar junction rectifiers manufactured by Microchip Technology. This series utilizes axial leaded glass-passivated die constructions housed in DO-7 packages. These components are engineered for reliability in harsh environments, offering consistent performance across the specified temperature range without requiring complex external biasing networks.

Replacement Considerations

Direct replacements include other manufacturers' 1N483 equivalents meeting identical JEDEC specifications. Verify pinout compatibility and physical dimensions of the DO-7 package. Substitutes must match the 70 V reverse voltage and 100 mA forward current ratings to ensure circuit integrity.