The 3-647106-5: The 5 circuits match the most common I/O count for sensor and actuator interfaces in industrial control panels. Surface-mount termination means the header is reflow-soldered to the PCB, not hand-soldered or wave-soldered. The 0.347" (8.81mm) insulation height leaves clearance for components under the body.
The tin-lead mating finish is adequate for moderate mating cycles (50–100 cycles) but will show higher contact resistance than gold after repeated disconnect/reconnect in corrosive environments. The post finish is tin, which solders well to standard PCB pads but does not offer the corrosion resistance of gold for the solder joint.
Voltage, Temperature, and Flammability — Envelope Limits
Rated 250 VAC, the header suits low-voltage signal and power distribution inside equipment enclosures. The UL94 V-0 housing material (PA46 nylon 4/6) means the connector will not sustain a flame after ignition — required for equipment that must pass a flammability test per UL 746C.
Lifecycle and Sourcing — Active Production, No Obsolescence Risk
RoHS3 compliant, which covers the EU RoHS directive and most global regulatory requirements for lead and other restricted substances.