IR
Power transistors, gate drivers and power-electronics devices
About the manufacturer
International Rectifier, commonly abbreviated IR, was a US power-semiconductor manufacturer closely associated with MOSFETs, gate-driver ICs, diodes and power-conversion solutions. International Rectifier was acquired by Infineon Technologies in 2015.
IR-branded components remain present in established power-supply, converter, motor-control and switching designs. Device selection must account not only for static ratings but also switching losses, cooling and transient behaviour of the complete power stage.
For replacements, verify whether the original IR number has a current Infineon successor. Package and pinout, gate-drive requirements, RDS(on), pulse-energy ratings and maximum junction temperature are central compatibility criteria.
Applications
Products and technologies from this manufacturer are relevant to the following applications:
- switch-mode power supplies
- motor drives and inverters
- DC/DC converters
- charging circuits
- protection and load switching
- maintenance of legacy power platforms
IR products available from Maritex
IR-labelled products predominantly concern power switching and control semiconductors, including components used to maintain established designs.
Available product groups include:
- power MOSFETs
- transistor gate drivers
- diodes and rectifiers
- power-control components
Replacement decisions should use the full datasheet, not merely a similar part number or blocking-voltage rating.
