A next-generation Schottky barrier diode achieves the rare combination of ultra-low forward voltage and reverse current, delivering superior protection for high-resolution image sensors in ADAS, industrial, and IoT systems—without compromising efficiency or reliability.
A new Schottky barrier diode (SBD) by ROHM Semiconductor is pushing the limits of image sensor protection by achieving what has long been considered technically impossible—combining low forward voltage drop (VF) with low reverse current (IR). This innovation promises to enhance reliability in high-resolution imaging systems, including advanced driver-assistance systems (ADAS) cameras and industrial vision equipment.
The key characteristics are:
- Forward voltage: < 300 mV (at IF = 7.5 mA, −40 °C)
- Reverse current: < 20 mA (at VR = 3 V, 125 °C)
- Withstands harsh environments while preventing circuit damage from photovoltaic voltages
- Reduces risk of thermal stress and malfunction during operation
- Compact flat-lead SOD-323HE package (2.5 mm × 1.4 mm)
- Ideal for space-limited applications like automotive cameras, security systems, and smart intercoms
- Supports ongoing miniaturization trends in automotive and industrial electronics
As image sensors evolve toward higher pixel counts and greater sensitivity, they become increasingly vulnerable to photovoltaic voltages generated when exposed to light during power-off conditions. Traditional low-VF diodes offer some protection but often suffer from high IR, which can lead to thermal runaway and degraded performance. The newly developed device tackles this trade-off head-on with a redesigned internal architecture that maintains both low VF and IR values simultaneously.
At the heart of the development is the RBE01VYM6AFH—a compact, automotive-grade diode engineered with a proprietary structure that leverages rectification SBD technology for protection applications. Fully AEC-Q101 qualified, the diode meets rigorous automotive standards for reliability and endurance, ensuring stable long-term performance in demanding environments. Beyond the current model, the manufacturer plans to expand the lineup with even smaller packages and optimized variants to serve next-generation electronics that demand higher protection efficiency and reduced power loss.
By overcoming the traditional VF/IR trade-off, this new SBD marks a major step forward in safeguarding image sensor circuits—paving the way for more robust, high-performance vision systems across automotive, industrial, and IoT applications.
