International Rectifier: Infineon & IR – A Powerful Combination

Infineon's semiconductors and control architecture are designed in a unique way to bring more efficiency, power density and cost effectiveness to your products. Our whole range of OptiMOS™ and StrongIRFET™ N-Channel Industrial Power MOSFETs enable innovation and performance in your application.

OptiMOS™ Power MOSFETs provide excellent best-in-class performance. Features include ultra low RDS(on) as well as low charge for high switching frequency applications. StrongIRFET™ Power MOSFETs are designed for rugged industrial applications and are ideal for designs with a low switching frequency as well as those that require a high current carrying capability.

For low frequency applications, OptiMOS™ 5 is the best fit when Best-in-Class performance is required. However, StrongIRFET™ is recommended for 20 to 75 V applications when best-in-class performance is not essential and cost is a more significant consideration.

For best-in-class performance at voltages from 80 to 150 V, OptiMOS™ 5 is recommended. If best-in-class is not essential and price/performance is more important, then OptiMOS™ 3 is the recommendation.

Voltages above 150 V are available in OptiMOS™ 3. In addition, older Trench MOSFETs, shown here as HEXFET™, are an option for highly commoditized markets where cost is the main consideration.

For high frequency applications, OptiMOS™ 5 is recommended for best-in-class and price/performance up to 150 V. OptiMOS™ 3 can be considered where high performance is less essential. As with low frequency applications, OptiMOS™ 3 is available for voltages above 150 V.

In summary Infineon’s OptiMOS™ portfolio, now complemented by StrongIRFET™ Power MOSFETs, creates a truly powerful combination. The joint portfolio, covering 20 V up to 300 V MOSFETs, can address a broad range of needs from low to high switching frequencies. The tables below provide a guidance overview for the recommended OptiMOS™ or StrongIRFET™ products for each major sub-application and voltage class. 


  • Expanded product portfolio 20 - 300V
  • Best-in-class technology OptiMOS™
  • Best choice for cost sensitive application StrongIRFET™


The full range of OptiMOS™ and StrongIRFET™ N-channel Power MOSFETs enable innovation and performance in applications such as switch mode power supplies (SMPS), motor control and drives, inverters and computing.


For high ruggedness applications like Power Tools, Electric Toys and Industrial Drives StronIRFET™ is highly recommended.
For high switching frequency applications we recommend OptiMOS™.


For applications as Solar and Uninterruptible Power Supplies we recommend OptiMOS™.
For offline battery powered systems StrongIRFET™ is recommended.


For SMPS application we highly recommend OptiMOS™.
For cost sensitive SMPS applications StrongIRFET™ might be the right choice.

International Rectifier Infineon IR A Powerful Combination secondary 1

International Rectifier Infineon IR A Powerful Combination secondary 2

International Rectifier Infineon IR A Powerful Combination secondary 3

International Rectifier Infineon IR A Powerful Combination secondary 4

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