1N3889

Single Diodes Overview

The Microchip Technology 1N3889 is a standard single rectifier diode housed in the DO-203AA (DO-4) axial leaded package. It features a maximum DC reverse voltage of 50 V and an average forward rectified current rating of 12 A. The device exhibits a typical forward voltage drop of 1.5 V at 20 A and a reverse leakage current of 10 µA at 50 V. Electrical characteristics include a reverse recovery time of 200 ns and junction capacitance of 115 pF at 10 V, 1 MHz. The component supports a wide operating temperature range from -65°C to +175°C.

Single Diodes Feature Summary

• High thermal stability with a junction temperature range extending up to 175°C
• Robust power handling capability suitable for high-current applications
• Standard fast recovery performance for general-purpose rectification

Single Diodes Applications

• Industrial power supply rectification circuits
• Automotive electronics power management systems
• General-purpose AC to DC conversion stages

Single Diodes Procurement Notes

Verify compliance requirements prior to procurement as this component does not meet RoHS standards. Confirm that the DO-203AA through-hole mounting style aligns with the target PCB design. Ensure the 50V reverse voltage rating provides adequate margin for the specific circuit operating conditions. Validate that the 12A current capacity meets the peak load demands of the application without exceeding thermal limits.

Single Diodes Selection Notes

Select this component when a rugged, high-current axial diode is required for environments exceeding standard commercial temperature ranges. The 175°C junction rating makes it suitable for automotive or industrial settings where heat dissipation is challenging. Compare against other members of the 1N388x series if higher voltage ratings are needed, noting that this specific part is optimized for 50V applications.

Single Diodes Part Context

The 1N3889 belongs to a family of standard rectifier diodes manufactured by Microchip Technology. It shares the same DO-203AA physical footprint and mechanical dimensions with related parts such as the 1N3890 and 1N3891. These components are designed for durability in harsh environments, offering consistent electrical performance across the extended industrial temperature spectrum.

Single Diodes Replacement Considerations

Direct substitutes within the same manufacturer family include the 1N3890 and 1N3891, which share identical packaging but offer different voltage ratings. Verify that any cross-brand replacement matches the 12A current rating and 50V reverse voltage specifications to ensure functional equivalence.