The shrouded four-wall housing with a detent lock mates with the ZH series crimp receptacle; the mated pair sits at a 6.4 mm stack height, which gives you a tight clearance budget in a small enclosure. That current ceiling is typical for signal-level duty — think sensor inputs, I2C buses, or low-power actuator lines inside a control cabinet.
SMT Assembly and Pick-and-Place
The header is terminated by solder reflow — the SMT pads are held in place by solder retention features during wave or reflow. It also includes a pick-and-place surface, so it feeds straight into a standard SMT line without a manual placement step.
The closest sibling is the B4B-ZR-SM4-TF, which shares the same 4-position, 1.50 mm pitch, and tin-plated contacts but omits the pick-and-place feature. If your line handles the part manually, the -TF variant is a direct drop-in; if you need pick-and-place, this -TFT version is the one.