Diodes Launches Automotive Field-Plated Super Barrier Rectifiers Rated 2 A to 8 A
New SBRFP devices offer drop-in replacement for Schottky diodes with up to 10 times the avalanche capability.
Diodes Incorporated has introduced a new family of field-plated Super Barrier Rectifiers (SBRFP) designed for automotive applications, with parts rated at 2 A, 3 A, and 8 A. The company positions these devices as drop-in replacements for comparable Schottky and PN junction diodes in various vehicle subsystems.
What Happened
The new SBRFP family utilizes a metal oxide semiconductor (MOS) manufacturing process rather than the metal-semiconductor junction found in conventional Schottky rectifiers. Diodes states this patented field-plated technology aims to overcome the limitations associated with both Schottky and PN junction diodes. The devices are intended for use in DC-DC converters, reverse-polarity protection circuits, battery charging systems, automotive LED lighting, and transmission control systems.
Specific technical specifications include a maximum forward voltage of 0.55 V at 8 A for the SBRFP8A60P5Q model. The 2 A SBRFP2M60P1Q and 3 A SBRFP3M60SAFQ models feature maximum reverse leakage currents of 12 µA and 7 µA, respectively, at 25° C and 60 V reverse voltage. Avalanche energy ratings for the family reach up to 145 mJ, which Diodes claims is five to 10 times the capability of conventional Schottky rectifiers. All four devices operate across a junction temperature range of -55° C to +175° C. Pricing in 1,000-piece quantities ranges from $0.08 for the SBRFP2M60P1Q to $0.26 for the SBRFP8A60P5Q.
Why It Matters
For automotive engineers and manufacturers, the SBRFP family addresses thermal management and reliability challenges inherent in high-temperature environments. By offering lower reverse leakage compared to standard Schottky diodes, which can increase steeply with temperature, the new parts help minimize the risk of thermal runaway. The significantly higher avalanche capability allows the rectifiers to withstand surge events, load dumps, and other transients common in automotive electrical systems, potentially improving the durability of critical vehicle components.
The Bottom Line
Diodes has released automotive-grade SBRFP rectifiers with ratings from 2 A to 8 A, featuring MOS-based technology that promises reduced conduction loss and enhanced surge tolerance compared to traditional Schottky and PN junction diodes.
