This part is a kind of semiconductor called Y1-222M.

Function of this product has Ceramic Disc Capacitor.

Manufacturers : SPK

Image and pinout :

Some of the text within the PDF file :

Safety Y1,Y2 Ceramic Disc Capacitor Y1 Series ■ Introduction ● These Ceramic Disc Capacitors are specifically designed for AC applications and meet the safety requirements of various safety standards agencies. ● These capacitors are ideal for across the line and line by-pass applications. ■ Features ● Ideal for across the line applications ● Compact size ● Cost effective product ● Safety standards recognized for AC applications ■ Specifications Operating temperature range Capacitance: Dissipation factor(D.F.) Insulation resistance: Test voltage: -25℃～125℃ Under 1KHz and 25℃±2℃, Vrms=1.0V conditions, not exceed capacitance tolerance. Max 2.5% At DC100V voltage for 1 minute, I.R.≥6000MΩ. Y1:Ut=8K VDC or Ut=4K VAC X1:Ut=4K VDC ■ How t [ ... ]

Y1-222M PDF Datasheet Download