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Product Detailed Parameters
- Description：DIODE SCHOTTKY 45V 120A PRM11
- Series：-
- Mfr：SMC Diode Solutions
- Package：Bulk
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：45 V
- Current - Average Rectified (Io)：120A
- Voltage - Forward (Vf) (Max) @ If：650 mV @ 120 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：10 mA @ 45 V
- Capacitance @ Vr, F：5200pF @ 5V, 1MHz
- Mounting Type：Chassis Mount
- Package / Case：HALF-PAK
- Supplier Device Package：PRM1-1 (Half Pak Module)
- Operating Temperature - Junction：-55°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The 121NQ045R-1 is a Schottky barrier rectifier manufactured by SMC Diode Solutions. It features a maximum repetitive peak reverse voltage of 45 V and an average forward rectified current rating of 120 A. The device utilizes the PRM1-1 package configuration, which corresponds to the D-67 HALF-PAK chassis mount style. Key electrical parameters include a forward voltage drop of 0.70 V at rated current and a thermal resistance from junction to case of 10 °C/W. The component is designed for high-efficiency power conversion applications requiring low noise switching.
Feature Summary
- Schottky technology enables super-high speed switching with low noise characteristics
- Low forward voltage drop improves overall system efficiency
- Chassis mount design facilitates robust heat dissipation in industrial environments
- Manufactured as a lead-free device with 100% pure tin terminal finish
Applications
- High-current DC-DC converters
- Industrial power supply units
- Battery charging systems
Procurement Notes
Verify the specific datasheet version before ordering, as manufacturers may update specifications. Confirm that the PRM1-1 package matches your chassis mounting requirements. Ensure compatibility with the 45 V reverse voltage rating for your circuit design. Check for lead-free compliance if required by your manufacturing standards.
Selection Notes
Select this component when a 120 A current capacity and 45 V blocking voltage are required in a chassis-mount form factor. The low forward voltage drop makes it suitable for low-voltage, high-current output stages. Consider the thermal resistance of 10 °C/W when designing heatsinking solutions for continuous operation.
Part Context
This part belongs to the 121NQ series of Schottky rectifiers from SMC Diode Solutions. Similar parts in the lineup include the 121NQ040R-1, which offers a 40 V rating, and other variants within the PRM1-1 package family. These components are generally used in medium-to-high power applications where fast recovery and low loss are critical.
Replacement Considerations
Direct substitutes must match the 120 A current rating, 45 V reverse voltage, and PRM1-1 (D-67) chassis mount package. Verify that any replacement maintains the same thermal resistance and forward voltage characteristics to ensure circuit performance remains unchanged.
