20-Pin Dual-Row 1.27 mm Pitch SMT Header
The 1.27 mm pitch and 1.27 mm row spacing set a compact board footprint, and the 6.42 mm mated stack height defines the z-height budget for mezzanine board stacking. The 4-wall shrouded housing provides keying and polarisation to prevent mis-mating, and the push-pull fastening means the connector pair is held by friction and the board guide, not a latch — fine for low-vibration racked assemblies.
The same 20-position layout is available as the 87409-110LF, which carries a listed 1 A DC current rating.
Board-to-Board Stacking Fit
The 6.42 mm mated stack height, 1.27 mm pitch, and board guide feature make this header suited for parallel board-to-board stacking in compact enclosures. The 0.130 inch (3.30 mm) mating pin length engages with a standard receptacle of matching pitch and row count.