Safety Capacitors and Resistors Vishay Safety Capacitors and Resistors include safety-rated RFI capacitors and fusible resistors that meet the safety requirements of UL1412. Vishay Safety Capacitors consist of ceramic, MLCC, and film technologies offering a wide range of capacitance options. Vishay Safety Capacitors and Resistors include metal film fusible resistors with high surge handling capability and wirewound resistors that ensure safe and silent fusing operation in overload conditions.