SFM-109-02-STL-D-LC SAMTEC Connector (Other) In Stock
SAMTEC SFM-109-02-STL-D-LC is an 18-position, dual-row, 0.050" pitch high-reliability surface-mount socket strip with low-clearance profile, optimized for compact board-to-board stacking in space-constrained embedded designs.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- SFM-109-02-STL-D-LC Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-109-02-STL-D-LC?
- 18-position dual-row surface-mount socket at 0.050" (1.27 mm) pitch provides high-density signal interconnect in a minimal PCB footprint
- Low-clearance (LC) profile reduces the mated stack height, enabling slim board-to-board assemblies in height-constrained enclosures
- High-reliability socket construction with STL (surface-mount tail lead) termination ensures robust solder joints and mechanical stability on SMT boards
What is SFM-109-02-STL-D-LC used for?
The SFM-109-02-STL-D-LC is designed for high-density board-to-board stacking scenarios in embedded computing modules, FPGA mezzanine cards, and instrumentation daughterboards that require 18 signal paths at 0.050" pitch with minimal mated height. Its low-clearance profile and surface-mount termination make it especially valuable in compact industrial controllers, medical devices, and portable test equipment where vertical space budgets are tight.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-109-02-STL-D-LC datasheet?
SFM-109-02-STL-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-109-02-STL-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the low-clearance (LC) designation mean for the mated stack height of the SFM-109-02-STL-D-LC?
The low-clearance designation means the SFM-109-02-STL-D-LC is engineered to minimise the vertical gap between the two mated PCBs. Combined with the 0.050" (1.27 mm) pitch layout across 18 dual-row positions, the LC profile is critical for slim embedded systems, wearables, and portable instruments where the total board stack height must stay within a tight mechanical budget.
How does the STL termination style on the SFM-109-02-STL-D-LC influence SMT assembly and solder joint reliability?
The STL (surface-mount tail lead) termination means the connector's contact tails are designed for SMT reflow soldering directly onto PCB pads rather than through-hole wave soldering. This allows placement by automated pick-and-place machines on a standard SMT line, and the surface-mount pads provide a consistent, inspectable solder fillet on each of the 18 dual-row contact positions, supporting IPC-A-610 acceptance criteria.
When should a designer choose the 18-position SFM-109-02-STL-D-LC over a single-row socket at 0.050" pitch?
A dual-row 18-position socket like the SFM-109-02-STL-D-LC is preferred over two single-row 9-position strips when the design requires a mechanically integrated connector body that aligns both rows simultaneously during mating. The dual-row single-housing approach reduces mating force variation, halves the number of connector placements needed on the SMT line, and shortens the total connector length compared to using two separate 9-position single-row sockets.
What board-to-board applications in industrial or defense electronics commonly use the SFM-109-02-STL-D-LC?
The SFM-109-02-STL-D-LC is specified in industrial automation controllers, rugged embedded computers, avionics signal-processing modules, and defense communication boards. Its 18-position dual-row 0.050" pitch socket provides the signal density and reliability needed on mezzanine cards that carry digital IO, LVDS video, or high-speed control signals between a baseboard and a processor module.
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