Nexperia, an expert in essential semiconductors, has announced the availability of a new 0.55 mΩ R_DS(on) 40 V power MOSFETs in the high-reliability LFPAK88 package for automotive (BUK7S0R5-40H) and industrial (PSMNR55-40SSH) applications.

These devices are the lowest R_DS(on) 40 V parts that Nexperia has ever produced and, most importantly, they deliver power densities more than 50X greater than traditional D2PAK devices. The new devices also offer improved performance in Avalanche and Linear mode, leading to increased ruggedness and reliability.

“The new 8 x 8 mm LFPAK88 MOSFETs combine the latest high-performance superjunction silicon technology with our proven LFPAK copper clip technology, which is renowned for delivering significant electrical and thermal performance benefits,” said Neil Massey, Nexperia’s product marketing manager. “The resulting low R_DS(on) enables us to pack more silicon in the package, improving power density and shrinking device footprint.”

Measuring just 8 x 8 x 1.7mm, the new power MOSFETs also feature class-leading linear mode / safe operating area (SOA) characteristics for safe and reliable switching at high-current conditions. Additionally, the SOA is at 1 ms, 20 V_DS operating conditions is at 35 A due to a combination of silicon and package, and at 10 ms, there’s 20 V_DS where the package dominates, the SOA is 17 A.

These figures are currently 1.5  to 2 times better than the competition. The devices also offer the best single pulse avalanche rating (EAS) at 2.3 J and a strong I_D current rating of 500 A, which is a measured rather than theoretical limit.

The size and performance benefits afforded by the Nexperia 8 x 8mm LFPAK88 MOSFETs enable designers to replace two paralleled old-style components with one new LFPAK88, simplifying manufacturing and increasing reliability.

The AEC-Q101-qualified BUK7S0R5-40H parts — which deliver more than twice the reliability performance demanded by the automotive standard — suit braking, power steering, reverse battery protection, e-fuse, DC-DC converter, and motor-control applications. The industrial PSMNR55-40SSH MOSFETs suit battery isolation, current limitation, e-fuse, motor control, synchronous rectification, and load-switch applications in power tools, appliances, fans, and e-bikes, scooters, and wheelchairs.