The 640385-8 is an 8-position, single-row, unshrouded header from TE's MTA-156 series. It mates with MTA-156 IDC or crimp receptacles to connect discrete wires or ribbon cable to a PCB. The unshrouded design means no side walls — visual alignment during mating is easy, but the mating half provides the retention, not the header itself.
At 3.96 mm pitch, the 8-position header occupies about 31.7 mm of board edge — enough room for 18 AWG wire without the contact-to-contact crowding you get on 2.00 mm pitch headers like the 1-292164-1 from the CT series. Tin-plated mating contacts are cost-effective for applications with fewer than 25 mating cycles. If the connector sees quarterly field-service disconnect, the tin surface will wear; for higher cycle life, a gold-plated sibling in the MTA-156 family is a better fit. The 600 VAC rating is a full voltage class above the 125 VAC of the CT series header (1-292164-1), making the 640385-8 suitable for line-voltage signal and power distribution in industrial equipment.
ROHS3 compliant.
Mates with any MTA-156 receptacle housing (IDC or crimp style). The unshrouded header has no polarization keying — pin-one alignment depends on the receptacle's housing key or wire color code. Termination is solder to through-hole. The 0.125-inch (3.18 mm) post length provides enough stand-off for wave-solder cleaning. No locking or retention features on the header itself — the mating half's latch or TPA provides the vibration resistance. For high-vibration environments, specify a shrouded header with a detent lock (like the 1-292164-1) instead.