For example:

Part number marking code for standard tin-lead product: IRF3205
Part number marking code for lead-free product: IRF3205PbF

Lead-free, tape and reel products must be ordered with a "TRPbF" suffix.

For example:

Part number marking code for standard tin-lead product: IR2112STR
Part number marking code for lead-free product: IR2112STRPbF