SFM-109-L2-SM-D-A-P SAMTEC Connector (Other) In Stock
SAMTEC SFM-109-L2-SM-D-A-P is an 18-position dual-row high-reliability SMT socket strip with 0.050 inch (1.27 mm) pitch for compact board-to-board signal interconnects. Features gold-plated contacts and a P-peg polarization key to prevent mis-mating. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- SFM-109-L2-SM-D-A-P Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 18-position dual-row socket on 0.050 inch (1.27 mm) pitch for compact 18-channel fine-pitch board-to-board mating
- High-reliability gold-plated contacts rated for low contact resistance below 20 mΩ per pin across hundreds of mating cycles
- P-peg polarization prevents 180-degree mis-insertion on the 18-pin dual-row SMT socket, protecting circuits at 1.8 V to 3.3 V signal levels
Applications
SFM-109-L2-SM-D-A-P is suited for small mezzanine modules, sensor interface boards, and embedded wireless modules requiring 18 fine-pitch socket connections in a minimal PCB footprint. Its 0.050 inch pitch keeps the 18-pin interface within approximately 11.4 mm of board edge, leaving room for surrounding components. The high-reliability construction supports repeated plug-in and removal typical in modular test-and-measurement and field-service hardware.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
With only 18 positions at 0.050 inch pitch, what is the linear board-edge length SFM-109-L2-SM-D-A-P occupies?
SFM-109-L2-SM-D-A-P occupies approximately 11.43 mm of PCB edge length for its 9 positions per row at 0.050 inch (1.27 mm) pitch. This compact 18-pin footprint is roughly half the edge length of a 0.100 inch pitch 18-position connector, enabling tighter component placement on small sensor modules, RF boards, and wireless modules where every square millimeter of PCB area is critical.
How does the SM suffix in SFM-109-L2-SM-D-A-P define the connector's board attachment method?
The SM suffix designates surface-mount termination in SFM-109-L2-SM-D-A-P, meaning all 18 contact tails are formatted for SMT reflow at peak temperatures up to 260°C. This avoids drilling 18 through-holes per connector and allows the socket to be placed alongside fine-pitch SMD components in a standard pick-and-place and reflow soldering process, reducing PCB fabrication cost and assembly cycle time compared to through-hole alternatives.
In a modular sensor system with frequent board swaps, how many mating cycles does the high-reliability SFM-109-L2-SM-D-A-P support?
SAMTEC SFM high-reliability socket strips are rated for a minimum of 200 mating cycles, with gold-plated contacts maintaining contact resistance below 20 mΩ throughout the rated cycle life. For a modular sensor node swapped once per week during calibration, the 200-cycle rating translates to nearly 4 years of uninterrupted field service before the 18-position socket reaches its rated cycle limit, making it suitable for industrial IoT and instrumentation maintenance schedules.
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