This is a 9W Multi 7-Colour 220VAC 43mm DOB LED (Pack of 5); this PCB has two main IC, which are used to drive the full LEDs and one another IC, known as a bridge rectifier. MB10F IC is a Bridge rectifier used to rectify the AC input signal into DC Signal. This IC has four pins, and the polarity has marked on it. This PCB’s operating voltage is 220V AC power supply. It has an eight pin IC which is used to Drive the LED. Its an RGB LED  Applications: Its mainly used in decorative products It’s used in home décor LEDs Headlight Street lights Features: Direct AC Source It has a total of 30 LED It does not need any external driver circuit It has an inbuilt driver IC SPECIFICATIONS: Type DOB LED PCB Input Voltage 220VAC No of LEDs 30 Colour Multi 7-Colour LED Diameter 43mm, height-12mm Wire Mounting Diameter 4.5mm Thickness 12mm Connection Point Line and Neutral No. of Connecting Point 02 Power 9 Wattage Country of Origin China