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IR’s 25V IRFH4257D FastIRFETTM in 4×5 PQFN Power Block Package Offers High Density, Compact Solution for DC-DC Applications

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International Rectifier, IR(R) (NYSE:IRF) , a world leader in power management technology, today announced the introduction of the IRFH4257D FastIRFETTM dual power MOSFET housed in a high performance 4×5 PQFN power block package. The new package option expands the power block family’s capability to lower power for compact designs in 12V input DC-DC synchronous buck applications including advanced telecom and netcom equipment, servers, graphic cards, desktop, Ultrabook and notebook computers.

The IRFH4257D features IR’s latest generation silicon and proprietary packaging technology which offers excellent thermal performance, low on-state resistance (RDS(on)) and gate charge (Qg). These features deliver superior power density and lower switching losses in a compact 4×5 power block.

“As with all of IR’s FastIRFETTM devices, the IRFH4257D works with any controller or driver to offer flexibility while delivering higher current, efficiency and frequency capability in single phase or multiphase applications. Now, with the addition of the IRFH4257D, designers have the option to choose a 4×5 or 5×6 PQFN to suit their design requirements,” said Stephane Ernoux, Director of Marketing, IR’s Power Management Devices Business Unit.

The IRFH4257D is qualified to industrial grade and moisture sensitivity level 2 (MSL2), and features an environmentally friendly, lead-free and RoHS compliant bill of materials.

More information is available on the International Rectifier website.

Availability and Pricing

Pricing for the IRFH4257D FastIRFETTM starts at US $0.99 in 10,000-unit quantities. Production orders are available immediately. Prices are subject to change.

About International Rectifier

International Rectifier (NYSE:IRF) is a world leader in power management technology. IR’s analog and mixed signal ICs, advanced circuit devices, integrated power systems and components enable high performance computing and reduce energy waste from motors, the world’s single largest consumer of electricity. Leading manufacturers of computers, energy efficient appliances, lighting, automobiles, satellites, aircraft and defense systems rely on IR’s power management benchmarks to power their next generation products. For more information, go to

Trademark Notice

FastIRFETTM is a trademark of International Rectifier. IR(R) is a registered trademark of International Rectifier Corporation. All other product names noted herein may be trademarks of their respective holders.

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