We do not currently carry the SF188R1 or SF188R0 thermal fuses from ATC Semitech, (they are the same fuse electrically, the difference between the R1 and the R0 is the Ro has one lead shorter than the other and the R1 are equal length), however we do carry a similar thermal fuse from Cantherm. The biggest differences are that the offered alternative has a slightly lower holding temperature. Please review the datasheets to ensure the alternative will work for your application.