What this 18-position header fits — and what it avoids
Its 0.163" (4.14 mm) pitch and 2-row, 18-position layout match the standard Mini-Universal receptacle housings and crimp terminals.
Pitch, positions, and plating — what drives the BOM match
With 18 positions loaded all, the header occupies a board footprint of 0.163" row spacing and 0.163" pitch between contacts. The 0.175" (4.45 mm) solder tail length suits standard PCBs. Voltage rating is 600 VAC.
The closest functional second-source in the evidence is the TE ATX series header 4-1775099-7. That part has 20 positions (vs 18), a slightly wider 0.165" (4.20 mm) pitch, and a square contact shape instead of circular. Both are shrouded, dual-row, through-hole, with locking ramp and tin plating. The ATX part carries a 9 A current rating and 250 VAC voltage rating, compared to the Mini-Universal's 600 VAC rating and current that varies by wire gauge. The 4-1775099-7 also has a thinner tin plating (120.0 µin vs 150.0 µin).