SFM-109-L2-H-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-109-L2-H-D-A-P-TR is an 18-position dual-row surface-mount socket strip with 0.050" (1.27 mm) pitch, H-series low mated stack height, and gold-plated A-P contacts for extended cycle life. It ships in tape-and-reel format for automated SMT assembly in high-reliability board-to-board interconnect applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- SFM-109-L2-H-D-A-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-109-L2-H-D-A-P-TR?
- 18-position dual-row (2 x 9) layout at 0.050" (1.27 mm) pitch for dense signal routing in compact PCB designs
- H-series low mated stack height minimizes overall board assembly profile to approximately 4 mm to 6 mm
- Gold-plated A-P contacts maintain contact resistance below 30 mΩ through 500+ mate-unmate cycles
- Tape-and-reel (TR) packaging supports fully automated SMT pick-and-place for high-volume production lines
What is SFM-109-L2-H-D-A-P-TR used for?
The SFM-109-L2-H-D-A-P-TR is designed for compact board-to-board stacking in portable instruments, industrial sensor modules, and medical monitoring devices requiring 18 signal circuits within a footprint under 12 mm at 0.050" pitch. Its gold-plated contacts ensure reliable connectivity in test fixtures and hot-swap modules subjected to more than 500 insertion cycles. The low-profile H-series stack height suits slim PCB sandwich designs where total vertical clearance is constrained to under 8 mm.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-109-L2-H-D-A-P-TR datasheet?
SFM-109-L2-H-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-109-L2-H-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What position count, row arrangement, and pitch define the SFM-109-L2-H-D-A-P-TR?
The SFM-109-L2-H-D-A-P-TR provides 18 total positions in a 2-row by 9-position layout at a 0.050" (1.27 mm) pitch, spanning a board footprint of approximately 11.4 mm in length. This is the same circuit count as single-row 18-pin headers but at half the PCB length due to the dual-row arrangement.
For a portable medical monitoring device PCB stack, what mated height advantage does the H-series designation provide?
The H-series specifies a low mated stack height of approximately 4 mm to 5 mm above the board surface, enabling total dual-PCB assembly profiles under 7 mm when including 1.6 mm board thickness. This is critical for wearable or handheld medical devices where housings are designed with 6 mm to 8 mm internal clearance to reduce overall device thickness below 15 mm.
How does the gold A-P contact plating on SFM-109-L2-H-D-A-P-TR extend connector life in test fixture applications?
The A-P hard-gold plating maintains contact resistance below 30 mΩ through 500 or more mate-unmate cycles, compared to tin contacts which can oxidize and exceed 50 mΩ after 50 cycles. In functional test fixtures cycling 18-pin boards 20 to 30 times per hour, this means over 16 hours of continuous operation per connector before any degradation becomes measurable.
When would an engineer choose SFM-109-L2-H-D-A-P-TR over the SFM-109-02-LM-D-LC-TR variant?
The A-P gold-plated variant is preferred when the application demands more than 50 insertion cycles or requires contact resistance stability below 30 mΩ, such as in test sockets and hot-swap modules. The LM-LC variant is more cost-effective for permanent board-to-board connections made once at assembly, where tin LC plating and standard LM height are sufficient for the application's 1 to 5 mating cycles over product lifetime.
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