What the 0.050" pitch and 20 positions mean for your board
The 5-104666-1: This is a 20-position, 2-row header on a 0.050" (1.27 mm) pitch with a row spacing of 0.100" (2.54 mm). The tight pitch sets the board footprint — the 0.125" (3.18 mm) mating pin length and 0.145" (3.68 mm) solder tail length give a clear z-height budget for the through-hole solder joint. The post finish is tin (150 µinch), which solders cleanly into the plated through-hole.
Temperature range and voltage rating — where it lives
Use it for low-voltage data, control, or sensor lines where the 1.27 mm pitch keeps the board routing dense.
Mating and latch details for harness assembly
This positive lock resists vibration-induced separation in automotive or industrial environments. The header accepts board-to-board or cable connections — the 2-wall shroud accommodates either a ribbon-cable IDC receptacle or a discrete-wire crimp housing from the same System 50 family.
The base product number is 104666 — the 5-104666-1 suffix specifies the 20-position, 2-row, through-hole, gold-plated variant in tube packaging.