TDK MLCC CKG MEGACAP Type 2220 Series. CKG Series MEGACAP Type adopts a double-stacked structure that realises twice as much capacitance as that of the existing products without changing the capacitor footprint. Features and Benefits:. Lower ESR and ESL than Al capacitors Capable of absorbing thermal and mechanical stress Improved vibration performance. Applications:. Smoothing circuits; DC-DC converters; LED, HID applications; Temperature variable applications and Piezoelectric-effect countermeasure