The BVR1812-04R from Bourns is a Multilayer Varistor that is designed to protect sensitive electronic devices against high-voltage surges in the low-voltage region. It requires input voltages of 5.5 VDC and has a clamping voltage of 30 V. This varistor offers excellent transient energy absorption due to improved energy volume distribution and power dissipation. It is utilized to protect integrated circuits and other components at the circuit board level. This RoHS-compliant varistor meets the IEC 61000-4-5 standard and is available in a surface-mount package that measures 4.50 x 3.20 x 2.45 mm. It is suitable for power supplies, entertainment electronics, and white goods.