SFM-149-02-LM-D-A SAMTEC Connector (Other) In Stock
SAMTEC SFM-149-02-LM-D-A is a 98-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for surface mount PCB applications. Offers fine-pitch dense interconnection with robust contact retention suitable for high-cycle mating environments. Globally available with worldwide shipping for engineering and production procurement.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- SFM-149-02-LM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 98-position dual-row fine-pitch 0.050" (1.27 mm) socket strip delivering twice the contact density of 0.100" connectors in the same board footprint
- High-reliability socket construction with robust contact retention rated for high insertion/extraction cycles on test fixtures and field-serviceable modules
- Surface mount termination enabling automated reflow assembly with no through-hole drilling, reducing PCB fabrication complexity for dense boards
Applications
SFM-149-02-LM-D-A is ideal for high-density board-to-board and module-to-board interfaces in FPGA mezzanine cards, embedded computing platforms, and communications line cards where 98 signals must be routed through a compact 0.050" pitch socket. Its high-reliability design suits test and measurement equipment, aerospace avionics, and defense electronics where repeated mating cycles between daughtercards and motherboards must maintain low contact resistance over the product lifetime. The surface mount format also fits industrial control backplanes that require dense SMT connectors without through-hole vias to preserve ground plane 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 position count and pitch does SFM-149-02-LM-D-A provide for high-density interconnects?
SFM-149-02-LM-D-A provides 98 positions arranged in a dual-row configuration at a 0.050" (1.27 mm) pitch, yielding 49 contacts per row. This fine pitch allows a full 98-pin interface in approximately half the PCB length compared to equivalent 0.100" connectors, supporting high-density signal routing in compact embedded systems.
How does the high-reliability rating of SFM-149-02-LM-D-A benefit test fixture and avionics applications?
SAMTEC's high-reliability SFM socket strips are rated for elevated insertion-extraction cycles, maintaining contact resistance below specified milliohm limits after repeated mating. In ATE test fixtures that plug and unplug device-under-test boards hundreds of times, and in avionics LRUs that undergo scheduled maintenance, this durability extends connector service life well beyond standard commercial socket strips.
Can SFM-149-02-LM-D-A be assembled using standard SMT reflow processes?
Yes, SFM-149-02-LM-D-A uses surface mount termination compatible with standard convection reflow profiles up to 260°C peak temperature. The SMT pads land on the PCB surface without requiring through-hole drilling, and the connector body aligns using standoff legs during placement, making it compatible with automated pick-and-place machines and standard solder paste stencil processes for the 0.050" pitch footprint.
What board-to-board applications use SFM-149-02-LM-D-A in FPGA or computing module designs?
SFM-149-02-LM-D-A is commonly used in FPGA mezzanine card (FMC) and VITA 57.1 interfaces where 98-position high-density sockets carry differential pairs at speeds up to several Gbps. Embedded computing systems using modules such as COM Express or custom SoM boards also use this socket to provide a large signal and power interface in a 0.050" pitch SMT footprint that fits within standard module dimensions.
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