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APT40DQ120SG
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Product Detailed Parameters
- Description：DIODE STANDARD 1200V 40A D3PAK
- Series：-
- Mfr：Microchip Technology
- Package：Tube
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：1200 V
- Current - Average Rectified (Io)：40A
- Voltage - Forward (Vf) (Max) @ If：3.4 V @ 40 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：350 ns
- Current - Reverse Leakage @ Vr：100 µA @ 1200 V
- Capacitance @ Vr, F：-
- Mounting Type：Surface Mount
- Package / Case：TO-268-3, D3PAK (2 Leads + Tab), TO-268AA
- Supplier Device Package：D3PAK
- Operating Temperature - Junction：-55°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The APT40DQ120SG is a single ultrafast soft recovery rectifier diode manufactured by Microchip Technology. It features a 1200 V reverse voltage rating and a 40 A forward current capacity. The device utilizes a TO-268 surface mount package, designated as D3PAK in distributor catalogs. It belongs to the FRED-1200V product family, characterized by fast recovery times of approximately 350 ns and typical forward voltages around 2.0 V.
Feature Summary
- Ultrafast soft recovery characteristics for reduced switching losses
- High voltage blocking capability suitable for industrial applications
- Surface mount construction for automated assembly
Applications
- Industrial motor drives
- Uninterruptible power supplies (UPS)
- DC-DC converters
Procurement Notes
Verify the exact suffix 'SG' against official Microchip documentation to confirm specific binning or tape-and-reel specifications. Ensure compatibility with TO-268/D3PAK footprints during PCB design. Cross-reference datasheet revisions to confirm thermal resistance values before finalizing thermal management strategies.
Selection Notes
Select this component when high-voltage isolation and rapid recovery are required in a surface-mount form factor. Compare total system losses against through-hole alternatives if space constraints allow. Validate that the 40 A continuous current rating meets peak load requirements without exceeding junction temperature limits under worst-case ambient conditions.
Part Context
This diode is part of Microchip's FRED-1200V series, designed for high-efficiency power conversion. It complements other devices like the APT2X61DQ120J, which offers dual parallel configuration in a different package. The series targets applications demanding low reverse recovery charge and high reliability in medium-power electronics.
Replacement Considerations
Check for direct pin-compatible substitutes within the same voltage and current class. Verify that any alternative maintains similar soft recovery characteristics to prevent voltage spikes in sensitive circuits.
