Reduce surface-arcing and eliminate post-solder coating in high-voltage applications

New ProtectiCap™ chips offer 1000V improvement over standard MLCCs Reduce surface-arcing and eliminate post-solder coating in high-voltage applications Features • High-voltage flashover resistance • Eliminate the need for post-solder conformal coating • High capacitance/voltage in small case sizes • Voltage ranges up to 5kV • Case sizes from 1206 to 2220 Applications: • Power supplies • Lighting ballasts • Inverters / DC link • General high voltage circuits Sample Request, Data & Application Note High-voltage discharges, known as surface arcing, arc-overs, flash-overs or corona discharges, can cause interference and component failure by producing a visible spark in addition to electrical noise. Factors such as humidity, solder balls, flux residue and other contaminants can all contribute to surface-arcing, particularly in MLCCs with higher dielectric constant materials. The layout of the PCB can also increase susceptibility through the use of oversize pads, vias beneath capacitors, buried layers or geometries which prevent effective cleaning. ProtectiCap™ provides consistent performance advantages with a special coating applied to an optimised high-voltage MLCC. This produces a smooth, sealed finish which allows higher voltages and capacitance values to be achieved in smaller case sizes. Comprehensive testing has shown an improvement in performance of a minimum of 1000V over standard parts. Standard test methods were based on international specifications including AEC-Q200, IECQ-IECC and MIL standards. ProtectiCap™ performance comparison Maximum test voltage before arcing in bulk tests across the range of sizes Free samples are available to qualifying applications. Charcroft reserves the right to decline requests for free samples.