SFM-139-L2-SM-D-A SAMTEC Connector (Other) In Stock
SAMTEC SFM-139-L2-SM-D-A is a 78-position dual-row high-reliability socket strip with 0.050" pitch designed for surface mount applications, featuring gold-plated contacts for superior signal integrity. Available in stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- SFM-139-L2-SM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 78-position dual-row surface mount socket strip with 0.050" (1.27 mm) pitch for high-density board interconnection
- High-reliability gold-over-nickel contact finish ensures low contact resistance and long operational life
- Surface mount termination style simplifies PCB assembly and enables compact, space-saving board layouts
Applications
The SFM-139-L2-SM-D-A is well suited for high-density board-to-board interconnection in test and measurement equipment, data acquisition systems, and embedded computing modules. Its 0.050" pitch and dual-row configuration make it ideal for backplane interconnects, FPGA daughter cards, and rugged industrial PCB stacking assemblies requiring reliable signal integrity.
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
What contact pitch and row configuration does the SFM-139-L2-SM-D-A use?
The SFM-139-L2-SM-D-A uses a 0.050" (1.27 mm) pitch dual-row layout with 78 total positions, providing 39 contacts per row. This fine-pitch dual-row design enables high-density interconnections in a compact surface mount footprint suitable for space-constrained PCB designs.
Which board-to-board stacking applications benefit most from the SFM-139-L2-SM-D-A connector?
This connector excels in FPGA daughter card interfaces, embedded computing module stacking, and data acquisition backplanes where 78 positions across a 0.050" pitch are required. Its surface mount termination and dual-row design support reliable high-cycle mating in test fixtures and modular industrial control systems.
How does the SFM-139-L2-SM-D-A compare to through-hole alternatives with similar pin counts?
Compared to through-hole 78-position socket strips, the SFM-139-L2-SM-D-A offers lower PCB assembly cost via standard SMT reflow, eliminates the need for drilling 78 holes, and reduces board thickness. The surface mount footprint also enables tighter component placement, critical when routing high-speed signals at 0.050" pin spacing.
What mating connector series is compatible with the SFM-139-L2-SM-D-A for a complete board-to-board solution?
The SFM series socket strips mate with SAMTEC's corresponding 0.050" pitch header series. For a 78-position dual-row configuration, compatible plug headers in the SFM or SHF families provide a complete 78-pin, 0.050" pitch board-to-board connector solution with matched contact geometry and rated mating cycles.
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