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Product Detailed Parameters
- Description：DIODE STANDARD 440V 1.2AXIAL
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：440 V
- Current - Average Rectified (Io)：1.2A
- Voltage - Forward (Vf) (Max) @ If：1.4 V @ 1.2 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：30 ns
- Current - Reverse Leakage @ Vr：500 nA @ 440 V
- Capacitance @ Vr, F：10pF @ 10V, 1MHz
- Mounting Type：Through Hole
- Package / Case：A, Axial
- Supplier Device Package：A, Axial
- Operating Temperature - Junction：-65°C ~ 150°C
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Overview
The Microchip Technology 1N6621US/TR is a standard surface-mount rectifier diode housed in the D-5A (SQ-MELF) package. It features a maximum DC reverse voltage of 400 V and an average forward rectified current of 2 A. The device exhibits a forward voltage of 1.6 V at 2 A and a reverse leakage current of 500 nA at 400 V. Key electrical characteristics include a reverse recovery time of 45 ns, junction capacitance of 10 pF at 10 V/1 MHz, and an operating junction temperature range from -65°C to 150°C.
Feature Summary
- Fast recovery performance with a 45 ns reverse recovery time for efficient switching applications
- Surface-mount construction in a compact SQ-MELF D-5A package for automated assembly
- High thermal stability supporting operation up to 150°C junction temperature
Applications
- General-purpose rectification in power supply circuits
- Freewheeling diodes in inductive load protection
- Clamping and flyback diodes in switching regulators
Procurement Notes
Verify the specific suffix US/TR against the manufacturer datasheet to confirm the SQ-MELF D-5A surface-mount package variant. Ensure compliance requirements are checked as the component may not meet RoHS standards depending on the specific manufacturing batch. Confirm lead times directly with authorized distributors due to potential variability in standard delivery periods.
Selection Notes
Select this component when a 400 V reverse voltage rating and 2 A continuous current capacity are required in a surface-mount form factor. The 45 ns reverse recovery time makes it suitable for higher frequency applications compared to standard slow-recovery diodes. Verify that the D-5A package dimensions fit the PCB layout constraints and that the thermal management supports the specified junction temperature range.
Part Context
This part belongs to the 1N6621 series of fast recovery rectifiers manufactured by Microchip Technology. It serves as the surface-mount equivalent to through-hole variants, offering similar electrical specifications in a compact SQ-MELF package designed for high-volume automated placement.
Replacement Considerations
Cross-reference with other 1N6621 series parts from Microchip or compatible manufacturers ensuring identical 400V/2A ratings and D-5A packaging. Verify pinout compatibility and thermal characteristics before substitution.
