100 Positions at 1.27mm Pitch — Board Real-Estate Decision
The 87409-150LF: This header packs 100 circuits into a 2-row, 1.27mm pitch grid — the highest position count in the Rib-Cage™ III series. The 1.27mm pitch and 1.27mm row spacing demand a tight board layout; the 0.130" (3.30mm) mating pin length gives the receptacle enough wipe for reliable contact. Mated stack height is 6.42mm, with the insulator standing 5.74mm off the board. That mid-height profile suits mezzanine cards where the z-budget sits between low-profile and tall stacking connectors.
Contact Plating and Current — What the 1A Rating Buys
Gold at that thickness handles 500+ mating cycles in field-service gear; the tin-plated solder tails (100µin) reflow cleanly on the SMT pads. The 1A rating is per-contact at the stated temperature range (-55°C to 130°C). In a 100-position header, the total current through the connector is limited by the sum of all active circuits and the board's thermal management — not by the contact alone.