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81CNQ040SM
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Product Detailed Parameters
- Description：DIODE ARR SCHOTT 40V 40A PRM2-SM
- Series：-
- Mfr：SMC Diode Solutions
- Package：Bulk
- Diode Configuration：1 Pair Common Cathode
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：40 V
- Current - Average Rectified (Io) (per Diode)：40A
- Voltage - Forward (Vf) (Max) @ If：740 mV @ 40 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：5 mA @ 40 V
- Operating Temperature - Junction：-55°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：PRM2-SM
- Supplier Device Package：PRM2-SM
- Grade：-
- Qualification：-
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Overview
The 81CNQ040SM is a Schottky diode array manufactured by SMC Diode Solutions. It features a common cathode configuration with two diodes per package. The device supports a maximum repetitive peak reverse voltage of 40 V and an average rectified forward current of 80 A per diode. It utilizes the PRM2-SM through-hole package. The component operates within a junction temperature range of -55°C to 175°C. Forward voltage is specified at 740 mV when conducting 80 A, while reverse leakage current is limited to 5 mA at the rated 40 V reverse voltage.
Feature Summary
- Schottky technology provides fast switching characteristics suitable for high-frequency applications.
- Common cathode dual-diode arrangement simplifies circuit design for bridge or synchronous rectification topologies.
- High thermal stability allows reliable operation in demanding environments up to 175°C junction temperature.
Applications
- DC-DC converter output rectification
- Free-wheeling diodes in motor drive circuits
- Power supply input rectification stages
Procurement Notes
Verify the exact suffix against official manufacturer documentation to confirm pinout compatibility and thermal pad specifications. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Confirm RoHS3 compliance status matches specific project regulatory requirements before finalizing orders.
Selection Notes
Select this component for applications requiring high current handling with low forward voltage drop. The PRM2-SM package offers robust mechanical mounting for chassis or board integration. Consider thermal management solutions given the 80 A rating per diode. Verify that the 40 V reverse voltage rating exceeds the maximum expected circuit voltage with adequate safety margin.
Part Context
This part belongs to the 81CNQ series of high-power Schottky rectifiers from SMC Diode Solutions. The series is designed for efficiency in power conversion systems. The PRM2-SM package is distinct from standard TO-220 variants, offering specific mounting hole patterns and thermal interface characteristics tailored for high-current modules.
Replacement Considerations
Cross-reference with other 80 A, 40 V Schottky arrays in the PRM2-SM package. Verify electrical parameters such as forward voltage and reverse leakage match system requirements. Check physical dimensions and mounting hole alignments to ensure mechanical interchangeability without PCB redesign.
