Summary of Dual MOSFET squeezes into PQFN package
International Rectifier introduced the IRFH4257D, a dual power MOSFET in a 4x5 PQFN package. This component targets compact 12V DC-DC synchronous buck applications for telecom, servers, and computers. It utilizes advanced silicon and packaging to achieve low resistance, low gate charge, and superior thermal performance.
Parts used in the IRFH4257D Project:
- Dual power MOSFET
- 4x5 PQFN power block package
- Latest generation silicon
- Proprietary packaging technology
EL SEGUNDO, Calif. — International Rectifier, IR® (NYSE: IRF), a world leader in power management technology, today announced the introduction of the IRFH4257D FastIRFET™ 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.
For more detail: Dual MOSFET squeezes into PQFN package
- What is the IRFH4257D?
It is a FastIRFET dual power MOSFET housed in a high performance 4x5 PQFN power block package. - How does this new package expand capability?
It expands the power block family's capability to lower power for compact designs in 12V input DC-DC synchronous buck applications. - What applications use this component?
It is used in advanced telecom and netcom equipment, servers, graphic cards, desktop, Ultrabook and notebook computers. - What features does the IRFH4257D offer?
It offers excellent thermal performance, low on-state resistance, and low gate charge. - Does it deliver superior power density?
Yes, these features deliver superior power density and lower switching losses. - Is the package size compact?
Yes, it is described as a compact 4x5 power block. - Who announced the introduction of this product?
International Rectifier, a world leader in power management technology, announced the introduction. - What technology is inside the device?
It features IR's latest generation silicon and proprietary packaging technology.

