This part is a WIMA MKS4 MKP4-CO 4.7µF 250V Polypropylene Film Audio Grade Capacitor with Dielectric Type of Polypropylene Film. This is a high-quality, low-inductance, low-ESL, high-speed audio grade capacitor with self-healing properties. This product is ideal for use in amplifiers or other critical applications requiring high quality audio components. This part features limited leakage current, wide temperature range, low ESR, and high ripple current handling capability.