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Rectifiers boost power density for telco, automotive apps

09 Oct 2014

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Vishay Intertechnology Inc. has rolled out 27 4-10A FRED Pt Hyperfast and Ultrafast recovery rectifiers in the compact, low-profile SMPC (TO-277A) eSMP series package. Featuring low leakage current and low forward voltage drop, the AEC-Q101-qualified rectifiers claim to cut switching losses and over-dissipation in automotive and telecom applications.

The Vishay Semiconductors FRED Pt rectifiers offer reverse voltages of 100V, 200V and 600V; reverse recovery time down to 24ns; and typical forward voltage drop down to 0.72V in single- and dual-die configurations. With a compact footprint and low profile, the devices' SMPC (TO-277A) package saves significant PCB space compared with DPAK packages while increasing power density to lower overall costs, according to the company.

FRED Pt rectifiers

Specified for output and snubber operation, the FRED Pt rectifiers are optimised for DC/DC converters and power factor correction (PFC) in automotive engine control units (ECUs), antilock braking systems (ABS) and LED lighting, in addition to telecom DC/DC bricks. The devices feature a planar structure and platinum-doped lifetime control to guarantee high overall performance, ruggedness and reliability characteristics in these applications. The components offer an operating junction temperature to 175°C for a more robust design.

The devices provide an MSL moisture level of 1 per J-STD-020, LF maximum peak of 260°C, meet the JESD 201 class 2 whisker test, and are RoHS-compliant and halogen-free. The rectifiers are geared for automated placement and allow for automated optical inspection (AOI) in automotive systems.

Samples and production quantities of the new FRED Pt rectifiers are available with lead times of eight to 12 weeks for larger orders.


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