All 30 positions are loaded — no skipped pins — so the BOM line count is the circuit count. Rated 5A per contact at the stated voltage of 110V, this header handles moderate power distribution alongside signal lines on the same connector. Termination is listed as both press-fit and solder — the square pin tail profile allows either a compliant-pin press into a plated hole or a conventional wave-solder joint. The overall contact length of 0.608" (15.44mm) breaks down to 0.327" (8.30mm) mating length and 0.177" (4.50mm) post length, giving a standard through-hole standoff height above the board.
That is fine for keyed ribbon-cable IDC sockets or crimp housings that have their own polarisation, but it does mean the board layout needs to account for the bare pins. The push-pull fastening type is simply the friction of the pin-socket interface; there is no latch or locking ramp, so vibration resistance depends on the mating half's retention. The dual-row 0.100" row spacing gives a compact footprint for 30 circuits — about 1.5" of board edge per row, plus the post length for through-hole clearance.