EPCOS B32912 Polypropylene Film Capacitor, 330V ac, ±20%, 47nF, Through Hole

EMI suppression capacitors (MKP) X1 class
Very small dimensions, self-healing properties
Plastic case, epoxy resin sealing (UL 94 V-0)
"Across the line" applications

Capacitors X class are designed for connecting directly across a mains supply, but should NOT be used in positions where failure of a capacitor would expose anybody to electric shock.

X Class - X1