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Product Detailed Parameters
- Description：DIODE ARRAY GP 400V 4A TO-220
- Series：MEGAHERTZ™
- Mfr：onsemi
- Package：Tube,Tube
- Diode Configuration：1 Pair Common Cathode
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：400 V
- Current - Average Rectified (Io) (per Diode)：4A
- Voltage - Forward (Vf) (Max) @ If：2.2 V @ 4 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：28 ns
- Current - Reverse Leakage @ Vr：10 µA @ 400 V
- Operating Temperature - Junction：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The MURH840CTG is a fast recovery rectifier featuring a dual common cathode configuration. It supports a maximum repetitive peak reverse voltage of 400 V and an average forward rectified current of 4 A per diode. The device exhibits a maximum reverse recovery time of 28 ns and a peak non-repetitive surge current capability of 100 A. It operates within a junction temperature range up to 175°C and is housed in a TO-220AB package with three terminals.
Feature Summary
- Dual common cathode architecture for efficient bridge or center-tapped applications
- Ultrafast recovery characteristics minimizing switching losses
- High thermal stability supporting elevated operating temperatures
Applications
- High-frequency power supply output rectification
- Free-wheeling diodes in DC-DC converters
- Polarity protection circuits
Procurement Notes
Verify the suffix 'G' indicates RoHS compliance and lead-free construction. Confirm the package type matches the required thermal management solution. Ensure the ordering part number aligns with the specific manufacturer's designation for the dual common cathode variant. Cross-reference datasheet revisions for any changes in mechanical dimensions or electrical limits before finalizing procurement.
Selection Notes
Select this component for applications requiring rapid switching speeds and moderate current handling. The dual common cathode design simplifies circuit topology by reducing component count compared to discrete single-diode solutions. Evaluate thermal resistance requirements based on the expected load current and ambient conditions to ensure reliable operation within the specified temperature range.
Part Context
This device belongs to the MURH series of ultrafast recovery rectifiers from onsemi. It is designed to replace slower standard recovery diodes in high-efficiency power conversion systems. The series emphasizes low forward voltage drop and minimal reverse recovery charge to enhance overall system efficiency.
Replacement Considerations
Public confirmed substitute part numbers include MURH840CT (non-compliant packaging) and MURH840. Verify pinout compatibility and electrical ratings when substituting.
