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Product Detailed Parameters
- Description：DIODE SCHOTTKY 40V 120A PRM11
- Series：-
- Mfr：SMC Diode Solutions
- Package：Bulk
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：40 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 @ 40 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 121NQ040R-1 is a Schottky barrier rectifier module manufactured by SMC Diode Solutions. It features a 40V repetitive peak reverse voltage and a 120A average forward current rating. The device utilizes the PRM1-1 Half Pak module package, designed for chassis mounting. It supports junction temperatures up to 175°C and offers low forward voltage characteristics typical of Schottky technology.
Feature Summary
- High power density in a compact Half Pak module form factor
- Low forward voltage drop for improved efficiency
- Robust thermal performance with 175°C maximum junction temperature capability
Applications
- DC-DC converter circuits
- Free-wheeling diode applications in power supplies
- Chassis-mounted rectification systems
Procurement Notes
Verify the specific suffix R-1 against the manufacturer's latest datasheet to confirm RoHS compliance and lead-free status. Ensure the procurement documentation matches the PRM1-1 package type and electrical ratings exactly. Cross-reference the part number with official SMC Diode Solutions catalogs to avoid counterfeit components or incorrect revisions.
Selection Notes
Select this component when high current handling at low voltage is required in a space-constrained environment. The PRM1-1 package simplifies assembly compared to discrete parallel configurations. Consider the 175°C thermal rating for high-temperature operational environments where standard silicon limits might be exceeded.
Part Context
This component belongs to the 121NQ series of Schottky rectifiers from SMC Diode Solutions. It is part of the PRM1-1 family of half-pak modules designed to replace multiple parallel discrete diodes. The series provides a consolidated solution for high-current applications requiring reliable thermal management and reduced board space.
Replacement Considerations
Official documentation indicates this module replaces three parallel DO-5 diodes. Verify pinout compatibility and thermal interface requirements before substituting with other PRM1-1 variants or competing half-pak modules.
