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Product Detailed Parameters
- Description：DIODE SCHOTTKY 45V 120A D-67
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- 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：D-67 HALF-PAK
- Supplier Device Package：D-67 HALF-PAK
- Operating Temperature - Junction：-
- Grade：-
- Qualification：-
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Overview
The Vishay 121NQ045 is a high-current Schottky rectifier module in the D-67 Half-Pak package. It features a maximum average forward current of 120 A and a repetitive peak reverse voltage of 45 V. The device supports junction temperatures from -55°C to 175°C with a thermal resistance of 0.40°C/W. Key electrical characteristics include a maximum forward voltage drop of 0.65 V at 120 A, a peak surge current of 19,800 A, and a junction capacitance of 5200 pF.
Feature Summary
- Optimized for low reverse leakage at high temperatures using proprietary barrier technology
- Unique high-power Half-Pak module design replacing two parallel DO-5 diodes
- High purity, high temperature epoxy encapsulation for enhanced mechanical strength and moisture resistance
- Guard ring structure for enhanced ruggedness and long term reliability
Applications
- Switching power supplies
- Converters
- Free-wheeling diodes
- Reverse battery protection
Procurement Notes
Verify the specific suffix (e.g., R) against the datasheet to confirm terminal configuration. Confirm that the D-67 mounting torque specifications are met during installation. Ensure heatsink surface preparation aligns with the typical thermal resistance requirements. Validate component authenticity through authorized distribution channels.
Selection Notes
Select this component for applications requiring high current handling up to 120 A and operation at elevated junction temperatures. The low forward voltage drop contributes to reduced conduction losses. Consider the D-67 package dimensions and mounting requirements when designing the PCB or chassis layout.
Part Context
This part belongs to the 121NQ... (R) series of high current Schottky rectifier modules. The series includes variants with different voltage ratings such as 35 V, 40 V, and 50 V. All share the same D-67 Half-Pak case style and thermal-mechanical characteristics.
Replacement Considerations
The datasheet indicates it replaces two parallel DO-5 diodes. Verify pinout compatibility and thermal interface requirements when substituting with other D-67 packages.
