New Industry Products

6A to 20A, 650V AEC-Q101 SiC Schottky Diodes

February 11, 2019 by Scott McMahan

Littelfuse, Inc. introduced two second-generation series of 650V, AEC-Q101-qualified SiC Schottky Diodes. The LSIC2SD065CxxA (see image above) and LSIC2SD065AxxA Series SiC Schottky diodes come with a choice of current ratings (6A, 8A, 10A, 16A, or 20A).

Typical applications for 650V Series SiC Schottky diodes include power factor correction (PFC), buck/boost stages in dc-dc converters, high-frequency output rectification, free-wheeling diodes in inverter stages. Other potential end products for the Schottky diodes include switch-mode power supplies, uninterruptible power supplies, solar inverters, industrial motor drives, and EV charging stations.

According to the company, the Schottky diodes offer a variety of performance advantages, including negligible reverse recovery current, high surge capability, and a maximum operating junction temperature of 175°C, So, they are suitable for applications that demand enhanced efficiency, thermal management, and reliability.

When compared to standard silicon PN-junction diodes, the 650V Series SiC Schottky diodes can reduce switching losses and substantially increase both the robustness and efficiency of a power electronics system.

With lower energy dissipation and operation at higher junction temperatures than Si-based solutions, they allow smaller heat sinks and a smaller system footprint for more compact, energy-efficient systems with a potential for a lower total cost of ownership.

"These new series are our first 650V SiC Schottky Diode offerings; all our previous releases were 1200V-rated devices, so we can now address a wider range of applications and further complement the Littelfuse SiC MOSFET portfolio," said Christophe Warin, Silicon Carbide Product Marketing Manager, Semiconductor Business Unit at Littelfuse. "Their AEC-Q101 qualification puts these diodes in a higher class than similar devices in terms of quality and reliability."

Key Benefits

  • AEC-Q101-qualified
  • Far lower switching losses than silicon bipolar diodes and fast, temperature-independent switching behavior make the devices suitable for high-frequency power switching.
  • The positive temperature coefficient enables safe operation and ease of paralleling.
  • The 175°C maximum operating junction temperature offers a wider design margin and relaxes thermal management requirements.

LSIC2SD065CxxA Series SiC Schottky Diodes are available in TO-252-2L (DPAK) packages, in tape and reel format, with a minimum order quantity of 2,500 devices. LSIC2SD065AxxA Series SiC Schottky diodes are also available in TO-220-2L packages, with 50 devices packed in a tube, with a minimum order quantity of 1,000 pieces. Sample requests may be placed through authorized Littelfuse distributors worldwide.