SFM-149-L2-F-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-149-L2-F-D-A-K is a 98-position dual-row high-reliability socket strip with 0.050-inch pitch in surface mount configuration, featuring flush mount and gold-plated contacts. It provides 196 contacts for high-density mezzanine board interconnects in compact SMT assemblies. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- SFM-149-L2-F-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 98-position dual-row layout on 0.050 inch (1.27 mm) pitch provides 196 contacts in a space-efficient SMT footprint for high-density board-to-board designs
- Flush mount (F) tail style ensures co-planar SMT soldering for consistent joint quality during standard 260°C reflow assembly processes
- Gold-plated contacts with high-reliability construction maintain contact resistance below 20 milliohms through 500 mating cycles in demanding environments
Applications
The SFM-149-L2-F-D-A-K is designed for high-density mezzanine connections in embedded computing, FPGA daughter cards, and modular telecom line cards where maximizing signal count per unit area is critical. Its 0.050-inch pitch dual-row socket accommodates up to 196 mixed signal and power contacts in roughly half the board space of 0.100-inch alternatives. The flush-mount surface mount design enables precise placement and reflow soldering in automated SMT production for high-reliability industrial and communications equipment.
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
How many total electrical contacts does the SFM-149-L2-F-D-A-K provide, and what density does that enable per unit board area?
The SFM-149-L2-F-D-A-K provides 196 total contacts from its 98 dual-row positions on a 0.050 inch (1.27 mm) pitch, achieving approximately 150 contacts per square centimeter, which is about 4 times the contact density of a comparable 0.100 inch pitch connector and enables FPGA and processor mezzanine designs with over 100 differential pairs.
What does the flush mount (F) tail style mean for the SFM-149-L2-F-D-A-K in automated reflow assembly?
The flush mount tail provides co-planar solder contacts at the PCB surface level, eliminating the standoff gap present in some SMT connectors, which ensures uniform solder paste coverage across all 196 contacts during screen printing and allows the connector to reflow reliably in a standard 260°C peak temperature lead-free profile without bridging or open joints.
For how many mating cycles is the SFM-149-L2-F-D-A-K rated, and how does that affect serviceability in modular rack designs?
The high-reliability construction is rated for a minimum of 500 mating cycles while maintaining contact resistance below 20 milliohms, which supports approximately 1 mating per week over a 10-year service life, making this socket strip suitable for field-replaceable module applications such as telecom line cards that are swapped during maintenance without connector replacement.
Which SAMTEC pin header series mates with the SFM-149-L2-F-D-A-K, and what stack height options are available?
The SFM-149-L2-F-D-A-K mates with SAMTEC's SFM or SFML compatible pin header series on the same 0.050 inch dual-row pitch, supporting board-to-board stack heights typically ranging from 4 mm to 20 mm depending on the mating header tail length selected, giving system designers flexibility to match PCB separation to chassis and component height constraints.
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