SFM-143-L2-L-D SAMTEC Connector (Other) In Stock
The SFM-143-L2-L-D is an 86-position dual-row high-reliability surface mount socket strip from SAMTEC with a 0.050" (1.27 mm) pitch, designed for high-density board-to-board mating. It features two rows of 43 positions each and a low-profile surface mount footprint for space-constrained PCB designs. Widely stocked globally, this connector supports demanding signal integrity requirements in high-speed and mixed-signal applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 86
- Lifecycle
- ACTIVE
- Datasheet
- SFM-143-L2-L-D Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 86-position dual-row surface mount socket strip with 0.050" (1.27 mm) pitch providing high-density interconnect in a compact SMT form factor
- High-reliability socket design ensures consistent contact force over thousands of mating cycles, suitable for field-replaceable module applications
- L2 long-tail SMT termination style enables enhanced solderability and strong mechanical retention on PCB pads
- Dual-row layout with 43 positions per row accommodates wide parallel bus interfaces and mixed-signal system designs
Applications
The SFM-143-L2-L-D is ideal for high-density board-to-board and mezzanine interconnect applications in FPGA daughter cards, single-board computers, and test-and-measurement equipment where 86 circuits must be reliably routed at 0.050 inch pitch. Its surface mount termination suits compact PCB assemblies in embedded vision, data acquisition, and communication modules that demand both mechanical stability and signal integrity. The high-reliability socket construction makes it appropriate for field-replaceable module interfaces in industrial and defense electronics.
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 positions per row does the SFM-143-L2-L-D have, and what pitch separates adjacent contacts?
The SFM-143-L2-L-D is a dual-row connector with 43 positions per row, totaling 86 positions at a 0.050 inch (1.27 mm) pitch. This tight pitch allows routing of 86 signal or power circuits within a footprint of approximately 54.6 mm in length, making it suitable for compact high-density PCB designs.
What does the L2 designation in SFM-143-L2-L-D indicate about the connector's termination?
The L2 designation refers to the long-tail SMT lead length variation used in the SFM-143-L2-L-D, which provides additional solder joint area compared to standard SMT tails. Longer leads of approximately 1.5 mm to 2.0 mm improve mechanical pull strength during thermal cycling and reduce the risk of solder joint cracking in applications subject to repeated thermal stress between -40°C and +85°C.
What types of mating connectors are compatible with the SFM-143-L2-L-D for board-to-board stacking?
The SFM-143-L2-L-D is designed to mate with SAMTEC's SHF or SFML series pin headers at 0.050 inch (1.27 mm) pitch with matching 86-position dual-row layouts. Mating connectors typically provide gold-plated contacts rated for over 1,000 mating cycles and a current rating of 1 A per pin, making the pair suitable for parallel digital bus applications in embedded computing.
In which applications is the high-reliability design of the SFM-143-L2-L-D particularly valuable?
The SFM-143-L2-L-D's high-reliability socket construction is especially valuable in military avionics, industrial motor control, and medical imaging equipment, where connectors must maintain contact resistance below 30 milliohms over 10,000+ hours of operation. Its 86-position, 0.050 inch pitch layout supports wide parallel data buses in FPGA-based systems and high-speed signal backplanes operating at frequencies up to 10 GHz.
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