This part is a kind of semiconductor called JQC-3FF.

Function of this product has SUBMINIATURE POWER RELAYS.

Manufacturers : HONGMEI

Image and pinout :

Some of the text within the PDF file :

HONGMEI RELAY SUBMINIATURE POWER RELAYS Single-Pole , 10Amp , PC Board JQC-3FF • UL / CUR File No.E170653 • TUV Certificate No. R 2034012 • CQC CQC 03001002865 • SPST-NO & DPDT configuration • Standard PC layout • Sealed version available nCONTACT DATA n characteristics Arrangement 1 Form A 1 Form C Initial Contact Resistance Max. (at 1A 24 VDC) 100m 100m Contact Material Silver Alloy Silver Alloy Contact Rating (Res. Load) 15A 125VAC 10A 277VAC/24VDC Max. switching voltage 250VAC/30VDC 250VAC/30VDC Max. switching current 15A Max. switching power 2770VA 240W 2770VA 240W UL/CUR rating 15A 125VAC 10A 120VAC 10A 277VAC 10A 277VAC 12A 120VAC TV-5 120VAC TUV rating 12A 125VAC 5A 250VAC Initial Insulation Resistance Dielectric Strength Between coil and [ ... ]

JQC-3FF PDF Datasheet Download