20-Position Clincher FFC Header — ZIF Actuator and Tin Contacts
The 66226-020LF: It terminates a 0.30 mm-thick flat flex cable (FFC) via a zero insertion force (ZIF) mechanism with a flip-lock actuator and a secondary backlock to hold the cable in place under vibration. Rated 2 A per contact with tin-plated copper nickel alloy contacts, it is built for internal wiring where the cable is not routinely disconnected — the 100 mating cycle rating reflects the tin interface, which wears faster than gold but keeps cost down for a single-mate harness. The housing is blue thermoplastic rated UL94 V-0, the actuator is black, and the connector mounts free-hanging (in-line) — no board footprint needed, just a straight FFC tail. The solder retention feature on the contacts helps hold them in the housing during assembly, though the termination is solder-free at the cable end. Voltage rating is 500 V, well above typical signal-level FFC applications (5–24 V), giving headroom for power or higher-voltage sensor interfaces within the 2 A current limit.
Pitch and Position Count — BOM Fit Check
At 20 positions on 0.100" pitch, this header is the highest circuit count in the 66226 series among the active peer variants — the 66226-016LF offers 16 positions, the 66226-011LF offers 11, and the 66226-014LF offers 14, all on the same pitch and with the same 2 A rating, tin plating, and ZIF features. The 20-position variant is the right choice when the FFC carries a dense parallel bus (e.g., 16 signal lines plus ground and power returns) and you need to keep the cable width under 0.100" × 20 = 2.00" plus edge margins. The free-hanging mount means no PCB footprint to allocate — the connector sits at the end of the cable, not on the board.
ZIF Actuation and Cable Retention
The ZIF mechanism eliminates insertion force — the FFC slides freely into the open actuator, then the flip lock and backlock clamp the contacts against the cable pads. This prevents pad damage and contact deformation common with non-ZIF connectors on thin 0.30 mm FFC. The backlock provides a secondary latch that resists cable pull-out in equipment with moderate vibration (e.g., industrial controllers, point-of-sale terminals). In a harness that is mated once at assembly and never touched again, this is a cost-effective choice versus gold-plated alternatives.
The base product number is 66226; the -020LF suffix indicates the 20-position variant with tin plating and RoHS compliance.