G125-FS11205F3R

Overview

The G125-FS11205F3R is a 12-position female receptacle connector from the Harwin Gecko-SL series. It features a double-row, vertical surface-mount design with a 1.25mm (0.049 inch) mating pitch and row spacing. The connector utilizes Screw-Lok threaded fixings for reverse board mounting to ensure secure retention. Contacts are gold-plated copper alloy sockets rated for 2A current at 250V. The housing is green polyamide (PA4T), offering UL94 V-0 flammability rating and operation within -65°C to +150°C.

Feature Summary

• Equipped with Screw-Lok threaded fasteners designed specifically for reverse fixing applications to enhance mechanical stability.
• Vertical double-row surface mount configuration allows for compact board integration with standard 1.25mm spacing.
• Constructed with high-temperature resistant polyamide insulation and gold-plated contacts for reliable signal transmission.

Applications

• Automotive electronic systems requiring robust board-to-board connections
• Industrial control units utilizing reverse-mounted PCB architectures
• General purpose electronics needing high-reliability signal interconnects

Procurement Notes

Verify that the specific F3 suffix corresponds to the Screw-Lok reverse-fixing variant rather than standard latch types. Confirm the required tooling for installing the threaded fasteners during assembly. Ensure the PCB layout accommodates the vertical profile and the necessary clearance for the screw mechanisms on the component side.

Selection Notes

Select this model when a vertical SMT female connector with positive mechanical locking via screws is required. It is suitable for designs where vibration resistance is critical and standard latches may be insufficient. Compare against standard Gecko receptacles if reverse mounting is not needed, as those may offer simpler installation procedures without threaded hardware.

Part Context

This component belongs to the Harwin Gecko-SL family, which specializes in high-reliability connectors featuring Screw-Lok technology. The series provides various pin counts and mounting styles, catering to demanding environments in automotive and industrial sectors where secure connection integrity is paramount over standard snap-fit solutions.

Replacement Considerations

Direct substitutes within the same series include G125-FS11005F3R (10 positions) or G125-FS11605F3R (16 positions). These share identical mechanical dimensions, Screw-Lok functionality, and electrical ratings, differing only in contact count.

FAQ

What is the function of the 'F3' suffix in the part number?

The 'F3' suffix indicates that the connector is fitted with Screw-Lok threaded fixings designed for reverse board mounting, providing enhanced mechanical retention compared to standard latching mechanisms.

Is this connector compatible with standard Gecko male headers?

Yes, the G125-FS11205F3R mates with standard Gecko series male headers that share the 1.25mm pitch and compatible contact geometry.