What This Connector Is and Where It Fits
The Amphenol 10164521-R181000LF is an 18-circuit, dual-row header from the FlexLock® series, designed for board-to-cable/wire interconnects. It uses a 3.20mm pitch and a right-angle through-hole mounting orientation, which means it mates parallel to the PCB plane — a common layout for space-constrained enclosures where the cable exits along the board edge. The 4 A per-circuit rating and 48 VDC voltage rating suit it for low-to-moderate power distribution and signal wiring in industrial control panels, consumer appliances, and automotive interior harnesses where a compact, latch-secured connection is needed.
Key Features That Drive the Fit
The header is fully shrouded with four walls, which protects the male pins from damage during handling and guides the mating receptacle into alignment. A latch holder provides positive retention against vibration and accidental disconnection — no secondary locking hardware needed. The housing is molded from UL94 V-0 thermoplastic, so it meets the flame-rating requirement for equipment inside an enclosure. Tin-on-tin contact plating with 40.0 µin (1.02 µm) on the mating side is a cost-effective choice for applications with a limited number of mating cycles — think one-time assembly or occasional field service, not daily reconnection.
Sourcing and Lifecycle
The 10164521-R181000LF carries an Active lifecycle status from the manufacturer — no end-of-life notice, no last-time-buy window. It is RoHS3 compliant. There is no official second-source or cross-reference on record, so confirm the BOM position count and mating half before committing.