ROHM’s ESR series utilizes an original resistor pattern and trimming design to ensure high voltage and precision. The images on the left show a comparison between a standard pattern and the ESR anti-surge pattern. Notice the longer resistive element path which aids in diffusing voltage surges. As seen in the images on the right, materials with superior characteristics are also utilized in order to prevent current leakage. Homogenization of conductive particles and glass, combined with an optimized resistive element pattern, prevents voltage concentration which ensures high ESD resistance and anti-surge properties.