ROHM has introduced a new lineup of surface mount SiC Schottky barrier diodes (SBDs) designed to enhance insulation resistance by expanding the creepage distance between terminals. This development targets the evolving demands of automotive applications like onboard chargers (OBCs), with eight models labeled SCS2xxxNHR already available and another set, SCS2xxxN, intended for industrial uses like factory automation and photovoltaic inverters, to be released in December 2024. The new SBDs are strategically created to address the challenge of reduced creepage distances that typically come with compact surface mount devices (SMDs), which are favored for their compatibility with automated assembly and manufacturing efficiency. The innovative package design of these diodes eliminates the central pin and ensures a minimum creepage distance of 5.1mm—approximately 1.3 times greater than that of standard products—boosting insulation resistance and mitigating tracking risks without needing additional resin-based insulation treatments.
ROHM’s advanced SiC SBDs support two voltage ratings, 650V and 1200V, accommodating the 400V systems that are standard in xEVs and future higher-voltage systems. This flexibility aligns with the industry’s push for energy efficiency and sustainability in automotive and industrial applications. The automotive-grade versions are AEC-Q101 qualified, confirming their robustness for high-reliability applications. With a design that fits existing circuit board patterns, the new SBDs enable seamless integration and replacement. By continuing to advance SiC technology and expand their high-voltage SBD offerings, ROHM aims to meet the rising efficiency and power management demands in both automotive and industrial sectors, contributing to a broader transition toward more energy-efficient technologies.
