SFM-106-T2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-106-T2-STL-D-A-K is a 12-position dual-row high-reliability surface mount socket strip with 1.27 mm (0.050") pitch designed for fine-pitch board-to-board mating. Features dual-beam contacts with gold plating for superior reliability in demanding applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 12
- Lifecycle
- ACTIVE
- Datasheet
- SFM-106-T2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12-position dual-row socket strip on ultra-fine 1.27 mm (0.050") pitch enabling high-density interconnection in space-constrained SMT designs
- High-reliability dual-beam contact design providing redundant electrical contact points and ensuring consistent mating force across all 12 positions
- Gold-plated contacts offering low contact resistance, superior corrosion resistance, and reliability across thousands of mating cycles
- Surface mount (STL) termination style compatible with standard reflow soldering processes for automated SMT assembly
- Anti-solder-wicking (A) and polarizing key (K) features preventing solder contamination of contacts and ensuring correct mating orientation
Applications
The SFM-106-T2-STL-D-A-K is used in high-density board-to-board interconnect applications such as RF modules, memory expansion cards, and mezzanine daughterboards where the 1.27 mm pitch provides twice the signal density of standard 2.54 mm connectors. Its high-reliability dual-beam contacts make it suitable for aerospace, defense, and industrial instrumentation where vibration and repeated mating cycles must not degrade contact integrity. The anti-solder-wicking feature protects contact surfaces during reflow, ensuring reliable signal integrity in fine-pitch configurations.
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 pitch does the SFM-106-T2-STL-D-A-K use, and how does it compare to standard 0.100-inch pitch connectors?
The SFM-106-T2-STL-D-A-K uses a 1.27 mm (0.050 inch) pitch, which is exactly half the spacing of standard 2.54 mm (0.100 inch) pitch connectors. This finer pitch allows the 12-position dual-row socket to occupy a footprint of approximately 7.6 mm x 5 mm, achieving twice the contact density per unit length compared to standard pitch alternatives used in less space-constrained designs.
What does the dual-beam contact design of the SFM-106-T2-STL-D-A-K contribute to connector reliability?
The dual-beam contact design means each of the 12 positions has two independent contact springs engaging the mating pin simultaneously. This redundancy ensures that if one beam loses contact due to vibration, contamination, or slight misalignment, the second beam maintains the electrical connection. The result is a connector suitable for high-vibration environments such as aerospace avionics or industrial motor drives where single-beam contacts could introduce intermittent open circuits.
What role do the A (anti-solder-wicking) and K (polarizing key) features of SFM-106-T2-STL-D-A-K play during PCB assembly?
The A suffix adds anti-solder-wicking barriers that prevent molten solder from migrating up the contact tails into the socket body during reflow at typical SMT temperatures of 245°C to 260°C. Without this feature, solder contamination can increase contact resistance and reduce mating cycle life. The K suffix adds a polarizing key to the housing that physically prevents the mating header from being inserted in the wrong orientation, eliminating a common assembly error on 12-position fine-pitch connectors.
In which board-to-board spacing configurations can the SFM-106-T2-STL-D-A-K socket strip be used with matching header connectors?
The SFM-106-T2-STL-D-A-K is part of the SAMTEC SFM series designed to mate with SFH or SHF series header connectors at defined board-to-board stack heights, typically ranging from 4 mm to 20 mm depending on the selected header height option. The T2 designation in the SFM-106-T2 indicates a specific contact tail length variant, allowing designers to select the exact 1.27 mm pitch stack height that fits their mezzanine or module application.
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