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81CNQ045S2
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Product Detailed Parameters
- Description：DIODE MODULE SCHOTT 45V 80A PRM2
- Series：-
- Mfr：SMC Diode Solutions
- Package：Bulk
- Diode Configuration：1 Pair Common Cathode
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：45 V
- Current - Average Rectified (Io) (per Diode)：80A
- Voltage - Forward (Vf) (Max) @ If：740 mV @ 80 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：5 mA @ 45 V
- Operating Temperature - Junction：-55°C ~ 175°C
- Mounting Type：Chassis Mount
- Package / Case：PRM2
- Supplier Device Package：PRM2
- Grade：-
- Qualification：-
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Overview
The SMC Diode Solutions 81CNQ045S2 is a Schottky rectifier module featuring a common cathode configuration with two diodes. It provides a maximum repetitive reverse voltage of 45 V and supports an average rectified forward current of 80 A per leg under specified thermal conditions. The device utilizes the PRM2 package, designed for chassis mounting. Electrical characteristics include a maximum forward voltage drop of 0.74 V at 80 A and 25°C junction temperature. The component operates within a junction temperature range of -55°C to +175°C.
Feature Summary
- Center tap module design with common cathode configuration
- High purity, high temperature epoxy encapsulation for mechanical strength and moisture resistance
- Guard ring structure for enhanced ruggedness and long term reliability
- Lead-free device construction with wafer lot traceability
Applications
- Switching power supply circuits
- DC-DC converters
- Free-wheeling diode applications
- Reverse battery protection systems
Procurement Notes
Verify the specific ordering suffix against official documentation before procurement. The 'S2' suffix indicates pure tin dipped terminals, which differs from nickel plated or lead-tin dipped variants. Confirm that the PRM2 package dimensions and mounting torque requirements align with the target chassis design. Ensure the selected variant matches the required terminal finish specifications for the assembly process.
Selection Notes
Select this component when a low forward voltage drop and high frequency operation are required in a chassis-mountable form factor. The PRM2 package offers a low profile suitable for high current density applications. Consider the thermal resistance values and operating temperature range to ensure adequate heat dissipation. Verify that the 45 V reverse voltage rating meets the peak working voltage requirements of the circuit.
Part Context
The 81CNQ045S2 belongs to the 81CNQ series of Schottky rectifiers manufactured by SMC Diode Solutions. This series includes various voltage ratings and terminal finish options within the same PRM2 package family. The module integrates two diodes in a single housing to simplify circuit layout and improve thermal performance compared to discrete components.
Replacement Considerations
Other variants within the 81CNQ series offer different voltage ratings such as 35 V or 40 V. Terminal finishes vary between nickel plated, PbSn dipped, and Pure Sn dipped options. Ensure any substitute maintains the PRM2 package style and common cathode configuration for direct compatibility.
