The 2170328-1: It arranges 60 contacts across 4 rows and 10 columns at a 0.098" (2.50mm) pitch — the column pitch typical for HM-Zd routing, giving the board layout engineer a known footprint for impedance-controlled traces. This is a signal-rate connector, rated 0.700A per contact, so it carries data lines, not bus power. The press-fit termination means it installs without solder — a clean backplane assembly where rework is possible and thermal stress on the plated through-holes is avoided.
What the 0.700A Rating Means for the Signal Path
0.700A per contact is a signal-level current, not a power rating. The Z-PACK HM-Zd series is built for high-speed differential signaling — think 10 Gb/s+ backplane lanes — where the contact geometry and impedance control matter more than current capacity. The 0.700A figure tells you this header is for data lines, not a DC rail.
Press-Fit Termination and Backplane Assembly
Press-fit is the termination method here — the compliant pin compresses into the plated through-hole of the backplane, making a gas-tight connection without solder. That matters for high-reliability builds: no solder voids, no thermal shock to the board, and the connector can be replaced in the field with the right insertion tool. The through-hole mounting gives mechanical stability on a thick backplane panel.