Which WS2811 package is used in LED Strip Pixel

I want to know that which IC package is used in Strip Pixel of WS2811
because SMD ic width is 6 mm and here total package is in 5mmx 5mm
so i need to know which package is used in Strip LED pixel

can we purchase online or out of that LED Strip

if any one knows please let me know

regards
Amol

Not exactly sure what you’re asking but here’s the ic

https://www.adafruit.com/product/1378?gclid=CjwKCAiAtdDTBRArEiwAPT4y-1r5WWjPDeCPlQ1sPYJOenhXwkLegM1_PLw5cCR-BsI2Q4gRtPwnCxoCJicQAvD_BwE

The led of a ws2811 strip is 5mm but the strip itself isn’t.

Sure there are many places you can get them from. PCB mounted individual chip even cheaper