The TE Connectivity 1437021-5 is a 26-position IDC receptacle from the standard 0.100" (2.54mm) pitch ribbon-cable connector family. It terminates 28-30 AWG discrete or ribbon cable with an insulation displacement contact, eliminating wire stripping and crimping for mass-termination harness builds. The dual-row, 2-row layout matches the footprint of standard 0.100" x 0.100" (2.54mm x 2.54mm) headers. The blue housing is keyed by the polarization rib on the mating face, which prevents reverse insertion into the matching pin header.
IDC termination accepts 28-30 AWG wire — solid or stranded — and the dual-beam contact pierces the insulation on each conductor simultaneously across all 26 positions. A single pass through a hand or pneumatic press terminates the entire cable in one operation, which is the main labor savings over individual crimp-and-stuff methods. Strain relief comes from the IDC contact grip on the wire insulation plus the latch ears on the housing sides that engage the mating header's locking ramps.
This receptacle mates with any standard 0.100" (2.54mm) pitch, 26-position, dual-row pin header that has a matching polarization key. The header's square pins (typically 0.025" square) enter the dual-beam female socket contacts. The latch ears on the 1437021-5 housing snap over the header's locking ramps for vibration-resistant retention. The 26-position count is common for 26-conductor ribbon cable — the IDC slot aligns with standard 0.050" (1.27mm) conductor spacing ribbon, with every other conductor landing in each row.
RoHS non-compliant per the listing. Verify your assembly's exemption status before specifying in a RoHS-mandated jurisdiction.