The specified ceramic capacitor is the 300pF/300V C0G/NP0 type. It has a capacitance rating of 300 picofarads and can withstand an operating voltage of up to 300 volts. This capacitor features a metric package size of 2828, denoted as "1111" in the product code, manufactured by Adibuja under the designated part number "1111J3000301GQT".