It belongs to package 16-TSSOP (0.173, 4.40mm Width). There is a Tape & Reel (TR) case packaging. There is a space in between this electrical part and Surface Mount.
S-8254BCHFT-TB-U Features
Available in 16-TSSOP (0.173, 4.40mm Width) Package Mounting Type: Surface Mount
S-8254BCHFT-TB-U Applications
There are a lot of ABLIC U.S.A. Inc. S-8254BCHFT-TB-U Battery Management ICs applications.