Rectifiers increase power density in SMF package

7th January 2015
Siobhan O'Gorman

Six rectifiers, which offer an increased power density in the compact, low-profile, surface-mount SMF eSMP package, have been released by Vishay Intertechnology. Alongside forward currents of 1 and 2A, the AEC-Q101-qualified devices provide low forward voltage drops and leakage currents, reducing power losses and improving efficiency in automotive applications. 

The devices, which are designed for high-frequency DC/DC converter, freewheeling diode, and power line polarity protection applications in automotive systems, include one standard, three Schottky barrier and two Hyperfast FRED Pt rectifiers. Suitable automotive systems include ECUs, ABSs and LED lighting. 

Compared with standard SMA, SMB, and SMC packages, the devices' SMF package saves significant board space, while increasing power density to reduce overall costs.

Providing for class H3B ESD protection (more than 8kV), the SE10FJHM3 standard rectifier is built on an oxide planar chip technology. The SS1F4HM3, SS1FH6HM3 and SS2FH6HM3 Schottky rectifiers offer 40 and 60V reverse voltages and low forward voltage drops down to 0.37V at 1A, +125°C.

The Hyperfast VS-1EFH02HM3 and VS-2EFH02HM3 FRED Pt rectifiers feature fast and soft recovery characteristics, with recovery times down to 28ns. The devices offer breakdown voltages of 200V and low forward voltage drops down to 0.93V at 1.0A. Guaranteeing high overall performance, ruggedness and reliability, the rectifiers feature a planar structure and platinum doped lifetime control.

Operating up to a junction temperature of +175°C, the devices have an MSL of 1 per J-STD-020 and an LF maximum peak of +260°C. The rectifiers, which are suitable for automated placement, are compliant to RoHS Directive 2011/65/EU, halogen-free according to JEDEC JS709A standards and meet the JESD 201 class 2 whisker test.

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