Infineon (Lead-Free) PBF Suffix

Infineon/International Rectifier PBF suffix calls out lead-free product.

Below are example leaded and non-leaded part numbers:
IRF540NL
IRF540NLPBF

A few other PBF parts

IRF540NLPBF
IRF540NPBF
IRF540NSTRLPBF
IRF540NSTRRPBF
IRF540NSPBF