SFM-124-L2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-124-L2-STL-D-A-K is a 48-position dual-row high-reliability socket strip on a fine 0.050" pitch for surface mount applications. Engineered for dense mezzanine and board-to-board interconnects with gold-plated contacts and stacking hardware. Suitable for FPGA, data acquisition, and high-speed embedded system boards.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- SFM-124-L2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 48-position dual-row fine-pitch socket on 0.050" (1.27 mm) pitch achieves very high contact density in a minimal PCB footprint
- High-reliability contact system with gold plating ensures stable low-resistance mating over thousands of insertion cycles
- Stacking (STL) tail style accommodates defined board-to-board standoff heights in mezzanine and module stacking designs
- Surface mount termination is compatible with standard reflow solder profiles for straightforward SMT integration
Applications
The SFM-124-L2-STL-D-A-K is designed for mezzanine board stacking, FPGA daughter card interfaces, and high-density signal routing in compact embedded systems that require 48 reliable contacts at a 1.27 mm pitch. Its stacking tail configuration supports precise board-to-board spacing in multi-layer module assemblies for instrumentation and communications equipment. The surface mount format allows integration into automated reflow PCB assembly processes without dedicated through-hole tooling.
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 count does the SFM-124-L2-STL-D-A-K provide?
The SFM-124-L2-STL-D-A-K offers 48 contacts arranged in a dual-row configuration on a 0.050 inch (1.27 mm) pitch, providing a high-density socket strip for board-to-board and mezzanine applications requiring up to 48 signal or mixed signal/power connections within a compact PCB footprint.
How does the stacking tail of SFM-124-L2-STL-D-A-K affect board-to-board assembly design?
The STL (stacking tail) on SFM-124-L2-STL-D-A-K defines a specific board-to-board standoff height, enabling designers to stack daughter cards and mezzanine modules at a controlled separation — typically ranging from 4 mm to 10 mm depending on the L2 stacking height variant — for reliable mechanical and electrical alignment in multi-board assemblies.
In which application domains is the SFM-124-L2-STL-D-A-K most frequently deployed?
SFM-124-L2-STL-D-A-K is commonly used in FPGA development boards with 48-pin expansion interfaces, high-speed data acquisition mezzanine modules, medical imaging sub-assemblies, and compact communications hardware where fine-pitch 1.27 mm dual-row sockets are needed for reliable high-density interconnects between stacked PCBs.
What are the reliability advantages of SFM-124-L2-STL-D-A-K compared to lower-grade socket strips?
Rated as a high-reliability socket strip, SFM-124-L2-STL-D-A-K uses gold-plated contacts with contact resistance typically below 20 milliohms and is rated for thousands of mating cycles, outperforming standard-grade alternatives in applications requiring sustained performance across industrial temperature ranges from -55°C to +125°C.
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