Silicon Variable Capacitance Diode contains Monolithic chip with common cathode for perfect tracking of both diodes. Infineon Technologies India Pvt. Ltd. Supplies Silicon Variable Capacitance Diode. Infineon Technologies India Pvt. Ltd. Offers semiconductors and system products for automotive and industrial electronics, chip card and security applications and in telecommunications. The Silicon Variable Capacitance Diode is suitable for use in FM tuners and can operate at a temperature ranging from -55 ° C to 125 ° C.