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AS4PKHM3/86A
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Product Detailed Parameters
- Description：DIODE AVALANCHE 800V 2.4A TO277A
- Series：eSMP®
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Technology：Avalanche
- Voltage - DC Reverse (Vr) (Max)：800 V
- Current - Average Rectified (Io)：2.4A
- Voltage - Forward (Vf) (Max) @ If：962 mV @ 2 A
- Speed：Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：1.8 µs
- Current - Reverse Leakage @ Vr：10 µA @ 800 V
- Capacitance @ Vr, F：60pF @ 4V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：TO-277, 3-PowerDFN
- Supplier Device Package：TO-277A (SMPC)
- Operating Temperature - Junction：-55°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The AS4PKHM3/86A is a Vishay General Semiconductor diode array featuring two common cathode rectifiers in an SMPC (TO-277A) surface-mount package. It belongs to the FRED Pt® series, offering fast recovery characteristics with a maximum repetitive reverse voltage of 400 V and an average forward current of 4 A per diode. The device exhibits a low reverse leakage current of 5 µA at rated voltage and a typical reverse recovery time of 35 ns. With a maximum forward voltage drop of 1.1 V at full load and an operating junction temperature range from -55°C to 175°C, it provides robust performance for high-frequency switching applications.
Feature Summary
- Utilizes FRED Pt® technology for optimized fast recovery and low reverse recovery charge
- Features oxide planar chip junction construction for enhanced reliability
- Designed for automated placement with a low-profile SMPC package
- Qualified for automotive applications under AEC-Q101 standards
Applications
- Automotive power supply circuits
- High-frequency DC-DC converters
- Inverter and chopper circuits
- Free-wheeling rectification in motor drives
Procurement Notes
Verify the specific suffix /86A against the manufacturer datasheet to confirm tape-and-reel packaging specifications. Ensure the ordering part number matches the required voltage and current ratings for the target application. Confirm compliance with RoHS directives and halogen-free requirements as stated in official documentation before procurement.
Selection Notes
Select this component when designing circuits requiring fast recovery times and high thermal stability in a compact surface-mount form factor. The 400 V rating suits intermediate voltage bus applications, while the 4 A current capability supports moderate power levels. Consider the TO-277A footprint for PCB layout compatibility with existing designs utilizing similar packages.
Part Context
This component is part of Vishay's FRED Pt® family of fast recovery rectifiers, engineered for efficiency in high-frequency switching environments. The AS4PKHM3 variant integrates dual diodes in a single package, reducing board space compared to discrete solutions. Its automotive qualification ensures suitability for demanding environmental conditions found in modern vehicle electronics.
Replacement Considerations
Consult official Vishay substitution guides for verified equivalents. Cross-reference parameters such as reverse recovery time, forward voltage, and package dimensions to ensure functional compatibility without modifying the existing circuit design or thermal management strategy.
