# Pin header A straight through-hole pin header. Pin 1 is at the origin, the row runs along +X and the second row along +Y. The insulator's underside is on the XY plane, the mating posts point up and the tails go down through the board. ## Source - 2.54 mm: Samtec TSW/HTSW catalogue page (F-226), , lead style -07: post above the insulator C 5.84, tail B 2.54, overall A 10.92, so the insulator is 2.54 high. Width 2.48 (one row), 5.02 (two rows). Post .025 in square, 0.64 mm. - 2.00 mm: Samtec TMM catalogue page (F-226), , lead style -02: C 3.00, B 3.70, A 8.20, insulator 1.50. Width 1.97 and 3.94. Other headers of the same pitch differ in post and tail length, so check the one you buy. **Proportions, for looks only:** the V notches between pins, and the 2.00 mm post size of 0.50 mm, which that page doesn't print. Right-angle, surface-mount, 1.27 mm and 1.00 mm headers aren't here yet; see `COVERAGE.md`.