New Industry Products

Taiwan Semiconductor Debuts Two Families of Fast Recovery Epitaxial Diodes

July 20, 2021 by Hailey Stewart

Micro SMA packaged, 25ns, max. reverse recovery time diodes are AEC-Q101 qualified; 1A- and 2A-rated parts feature low reverse leakage, low reverse recovery charge, low forward voltage.

Taiwan Semiconductor, a global supplier of discrete power electronics devices, LED drivers, analog ICs, and ESD protection devices, announces the availability of the PU1xMx / PU2xMx families of fast recovery epitaxial diodes. These high-reliability (AEC-Q101 qualified) FREDs offer optimized switching speed vs. reverse recovery time. Their soft reverse recovery results in lower noise switching while achieving low losses and increased efficiency. The Micro SMA package heat spreader contacts provide excellent heat transfer.

Image courtesy of Taiwan Semiconductor

“TSC’s FRED devices offer an unparalleled combination of small footprint, fast switching speed, low parasitic capacitance, and low leakage,” said Vice President, TSC Products, Sam Wang. “In terms of price, performance, and package, our FREDs set a new benchmark for the industry.”

The PUxxMx Families provides a number of beneficial features:

  • Fast Switching and Reverse Recovery Times – Increases efficiency in a wide range of power electronics designs from medium voltage to high voltage applications, lowers EMI and RFI, and simplifies snubber and filtering design.
  • Low Reverse Leakage – Industry-leading maximum IR (1 µA @ Tj=25°C) improves efficiency and offers a more controlled switching response between forward and reverse conduction modes. 
  • Low Reverse Recovery Charge –Maximum QRR (40 nC @ IF=0.5A, IR=1.0A, IRR=0.25A) lowers parasitic ringing and EMC, reduces the need for snubbers; increases switching speed, and lowers losses. 
  • AEC-Q Automotive Qualified Available – All parts in the family meet stringent automotive reliability and performance criteria – Production Part Approval Process (PPAP) documentation is available. 
  • Global Materials Compliance – RoHS compliant, halogen-free (per IEC-61249-2-21), WEEE, REACH, California Prop. 65, JESD-201 Class 2 Whisker Test and others.
  • Small Surface Mount Micro SMA Package – Ideal for automated placement. Low-profile packaging with heat-spreader contacts provides excellent thermal management. 

Applications include automotive alternator charging regulators in 12-, 24 to 28- and 48-Volt systems; POE power, protection, and blocking circuitry; general-purpose switching power, snubber circuits, antiparallel diodes in high frequency switching circuits; freewheeling diode in converters, chargers, and motor control circuits.

Design resources include comprehensive datasheets (PU1BMH – PU1DMH   PU2BMH – PU2DMH) and spice models for each component in the series.


About Taiwan Semiconductor (TSC).

Recognized for more than 40 years for its core competence in discrete power rectifiers, Taiwan Semiconductor’s expanded product portfolio provides a complete solution from one source: including trench Schottky’s, MOSFETs, power transistors, LED driver ICs, analog ICs and ESD protection devices. A global enterprise with 2,000 employees, TSC’s production facilities in China and Taiwan are fully compliant with current automotive and environmental standards such as IATF16949, ISO9001, and ISO14001. Taiwan Semiconductor products are used in a vast array of applications in the electronics industry including automotive, computer, consumer, industrial, telecom, and photovoltaic. Through the strategic expansion of innovative manufacturing capabilities and its focus on pioneering efficient semiconductor solutions, TSC is the right choice for a successful and lasting business relationship.