SFM-129-T2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-129-T2-STL-D-A-K is a 58-position dual-row high-reliability socket strip with 0.050-inch (1.27mm) pitch in a surface-mount package, designed for dense board-to-board and mezzanine card interconnects. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 58
- Lifecycle
- ACTIVE
- Datasheet
- SFM-129-T2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 58-position dual-row SMT socket strip at 0.050-inch (1.27mm) pitch for high-density mezzanine and daughter-card interconnects
- High-reliability Type 2 tail with straddle-mount (STL) design allows secure mechanical attachment to the PCB edge
- Dual-row configuration routes 58 signals in a single compact connector reducing BOM complexity
- RoHS-compliant construction with gold-plated contacts ensures long-term signal integrity across multiple mating cycles
Applications
The SFM-129-T2-STL-D-A-K is suited for high-density interconnect applications in FPGA mezzanine modules, server blade cards, and industrial embedded computing platforms where 58 signals must be transferred at 0.050-inch pitch. Its straddle-mount design provides additional PCB mechanical support, making it suitable for vibration-prone industrial and aerospace environments. The surface-mount format integrates cleanly into automated reflow soldering assembly lines for high-volume production.
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 the SFM-129-T2-STL-D-A-K offer for mezzanine card designs?
The SFM-129-T2-STL-D-A-K provides 58 positions in a dual-row configuration at 0.050-inch (1.27mm) pitch, making it well suited for FPGA mezzanine cards, COM Express modules, and industrial blade servers that require a large number of signal pins in a compact footprint.
How does the straddle-mount (STL) feature of the SFM-129-T2-STL-D-A-K benefit PCB mechanical strength?
The straddle-mount (STL) design clamps onto the PCB edge, distributing mechanical forces across a larger contact area compared to standard surface-mount sockets. This improves resistance to connector pull-out forces and vibration, which is critical in industrial automation and aerospace applications using 58-pin mezzanine connections at 0.050-inch pitch.
Is the SFM-129-T2-STL-D-A-K compatible with standard SMT reflow soldering processes?
Yes, the SFM-129-T2-STL-D-A-K is a surface-mount connector compatible with standard reflow soldering profiles. Its Type 2 tail geometry and 0.050-inch pitch pads align with typical SMT land patterns, supporting automated pick-and-place assembly for high-volume PCB production of 58-position dual-row socket boards.
When would an engineer choose the SFM-129-T2-STL-D-A-K over a through-hole socket strip for the same 58-pin interface?
The SFM-129-T2-STL-D-A-K is preferred when the PCB design requires SMT-only assembly with no through-hole drilling, freeing PCB routing space on the opposite side. At 0.050-inch pitch with 58 positions, the surface-mount format also enables thinner PCB stacks used in server blade and embedded computing applications where board-to-board height clearance is limited.
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