Tin-Plated Contacts and Current Derating
The 3-644456-6: Tin plating is well suited for moderate mating cycle counts (typically 25–50 cycles) in indoor, non-corrosive environments; the 150 µinch layer provides a durable wear surface that resists fretting corrosion under vibration. Voltage rating is 250 VAC, consistent with general-purpose signal and low-power distribution applications.
Available in bulk packaging.
Comparison with Peer Headers
Compared to the 1-292164-1 (CT series, 11 positions, 0.079" pitch, shrouded, right-angle), the 3-644456-6 offers a wider 0.100" pitch and unshrouded vertical orientation — a simpler footprint for manual wiring but less protection against mis-mating. The CT header uses a detent lock for retention; the MTA-100 relies on the receptacle's latch.