The CAP CER 39PF 1KV C0G/NP0 1210 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 39 pF and a tolerance of ±10%, indicating that its actual capacitance can vary within this range. The device also features a high working voltage of 1000V (1kV), which suggests it can handle significant electrical stress without failing. This capacitor is classified as C0G, also known as NP0, indicating it has a stable temperature coefficient and can be used in applications where precise capacitance values are required. Its dimensions are specified as 1210, corresponding to the metric size of 3225.