40-Position Board-to-Board Receptacle with Board Lock
The TE Connectivity 1734101-4 is a 40-position board-to-board receptacle from the CHAMP.050 I series. It carries 40 contacts in two rows, terminated through-hole with solder tails. Gold flash on the contacts handles signal-level current in controlled environments — the flash thickness is enough for corrosion resistance but not for repeated high-cycle mating. The board guide eases alignment during placement, and the board lock holds the connector in place through reflow and against vibration after soldering.
Mounting and Assembly Details
Through-hole solder termination with a board lock feature. The board lock provides mechanical retention during the soldering process and adds shear resistance once the connector is mounted — useful for a 40-position part where the cumulative insertion force of the mating half can stress the solder joints.