Meaning of unity gain bamdwidth product of op amp?

[treez]

The MCP601 has a unity gain bandwidth product of 2.8MHz.

...so does that mean that if connected as a unity gain follower, then it can pass a 2.8MHz sine wave arriving at its noninv input, with no distortion or amplitude reduction?

MCP601 datasheet
https://ww1.microchip.com/downloads/en/DeviceDoc/21314g.pdf

 

[FvM]

It means that the unity gain buffer has a bandwidth of 2.8 MHz, the amplitude will be usually reduced by 3 dB. GBW is a linear parameter and hasn't to do with non-linear distortions. At GBW, an amplifier will effectively work without feedback linearization, so any OP non-linearity (e.g. crossover distortion) will fully show.