| Description & Applications | CHIP VARISTOR Chip Varistor VCM11R/21R Series Ultra Small Size Surge Absorb Components FEATURES 1. It is effective in high density packaging, because of smaller dimension than diode which is generally used as surge countermeasure devices. 2. The small clamping voltage ratio enables effective absorption of surge noise. 3. VCM11R can be applied in high speed signal line, because its capacitance is relatively small. 4. The large peak current of VCM21R, up to 150A, enables high reliability against surge. 5. VCM21R can be applied to ISO-7637-1. Test pulse condition. 6. The nickel barrier structure of the external electrodes provides excellent solder heat resistance. Both flow and reflow soldering methods can be applied. APPLICATIONS Surge absorption in communication ports such as RS-232C Motor/relay noise absorption Electro static protection in I/O port of computers |