The Amphenol L717HDA26P is a 26-position, 3-row plug from the HD series of high-density D-subminiature connectors. This is a free-hanging (in-line) plug with solder-cup termination — meaning you wire it by soldering each conductor into a cup at the rear of the contact, not by crimping or PCB mounting. It is designed for cable-to-panel or cable-to-cable connections where the connector is terminated in the field or on a harness board. The steel shell with tin plating provides EMI shielding and mechanical durability, and the grounding indents in the shell mate with the receptacle face to bleed shield current before it reaches the signal pins — a detail that matters for signal integrity in electrically noisy environments.
Wiring it: solder-cup termination and what that means
Solder-cup termination means each contact has a cup at the rear that accepts a stripped wire end, which you solder in place. The shell has an unthreaded flange (: Housing/Shell (Unthreaded)), so it does not have integral jackscrews or slide-locks. If the application needs positive locking to the mating receptacle, you will need to add a separate locking mechanism — either jackscrews through the flange holes or a slide-lock kit. The flange is built for that; it just ships without the hardware installed.
Mating half and compatibility
The L717HDA26P mates with any standard high-density D-sub receptacle that has 26 positions in 3 rows and uses the DA (A) shell size.