This is a 120pF ceramic capacitor with the specifications: CAP CER 120PF 3KV C0G/NP0 2220. It has a tolerance of ±1% and can withstand a voltage of up to 3000V (3kV). The capacitor's dimensions are 5.7mm x 2.2mm, corresponding to the metric size 5750. It belongs to the C0G/NP0 class and has a temperature coefficient of 0 parts per million (ppm) over the -55°C to +125°C operating range.