The 0.020" (0.50mm) pitch packs 40 circuits into two rows — this is the tightest common FPC/FFC pitch class, so the board footprint needs matching trace and space capability.
Solder Retention and Mounting
Surface-mount right-angle with solder retention features — the extra hold-down pads on the connector body keep it planted during reflow and resist the shear force from cable handling after assembly.
40 vs 30 Positions in the Same Footprint Class
The 40PS-JMDSS-G-1-TF shares the same 0.020" (0.50mm) pitch, 2-row layout, right-angle SMT orientation, and 0.189" (4.80mm) board height with the 30-position 30PS-JMDSS-G-1-TF. The difference is 40 circuits vs 30 — the extra 10 positions extend the connector along the same pitch axis, so the board footprint lengthens but the routing pitch and stack height stay identical. Pick the position count that matches the signal channel count on the BOM.