Expanded lineup of compact high-efficiency SBDs

04-11-2021 | ROHM Semiconductor | Automotive Technologies

ROHM has expanded its portfolio of Schottky barrier diodes with 24 new compact high-efficiency models (12 RBR series and 12 RBQ series). These devices – 178 in total – are excellent for protection and rectification circuits in automotive, consumer, and industrial equipment applications.


The company strengthened its lineup of SBDs that balances small size with low VF and IR characteristics required by the automotive sector. The RBR and RBQ series has been expanded to include a line-up of compact high current, high voltage products that facilitate rectification and protection in a broader range of applications.


Introducing a new process allows the company to improve the chip performance of the series by 25% (VF of RBR series in particular) over its conventional products. Moreover, the series offers superior low VF characteristics – key to increasing efficiency and reducing loss. This makes them excellent for automotive applications and consumer electronics, including laptops where high efficiency is needed. Twelve of the products adopt a compact package (PMDE package (2.5 mm x 1.3 mm)) that decreases the mounting area by 42% compared to existing products (PMDU package / SOD-123).


At the same time, the RBQ series offers exceptional low IR characteristics that allow stable operation in high-temperature environments – significantly decreasing the risk of thermal runaway, which is a concern with SBDs. They are excellent for automotive powertrain applications and power supplies for industrial equipment that function in high-temperature environments. Twelve new 100V products have been added to satisfy the demand for higher voltages. And both series are qualified under the AEC-Q101 standard to secure automotive-grade reliability.

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