The product reference number is 1808Y1K04P70BFT, which corresponds to a ceramic capacitor with the following specifications: CAP type CER 4.7PF 1KV C0G/NP0 in an 1808 package size with a capacitance of 4.7 pF and a tolerance of ±0.1 pF, and it can withstand voltages up to 1000V (1kV).