SFM-129-02-STL-D-A-K SAMTEC Connector (Other) In Stock
High-reliability dual-row surface-mount socket strip from SAMTEC with 58 positions and 0.050-inch pitch for dense signal routing. Designed for high-cycle mating in demanding applications. Available in worldwide stocking with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 58
- Lifecycle
- ACTIVE
- Datasheet
- SFM-129-02-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 layout on 0.050-inch pitch for high-density signal interconnect on compact PCBs
- Surface-mount termination style enabling automated SMT assembly without through-hole tooling
- High-reliability construction with locking key (K) feature to prevent mis-mating in rugged environments
Applications
The SFM-129-02-STL-D-A-K is used in high-density board-to-board and mezzanine interconnect applications where 58 signals must pass through a 0.050-inch pitch interface in a surface-mount footprint. It is well-suited for FPGA daughter cards, test and measurement modules, and compact embedded computing platforms requiring reliable multi-cycle mating. The dual-row configuration doubles signal density compared to single-row alternatives in the same board length.
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 and at what pitch does the SFM-129-02-STL-D-A-K connector offer?
The SFM-129-02-STL-D-A-K provides 58 positions arranged in a dual-row configuration on a 0.050-inch (1.27 mm) pitch. This compact arrangement delivers high signal density in a surface-mount package, making it suitable for dense PCB layouts where board real estate is limited and many signals must be routed across a mezzanine interface.
What does the K suffix indicate in the SFM-129-02-STL-D-A-K part number, and why does it matter for system reliability?
The K suffix in the SAMTEC SFM series denotes a keying feature that physically prevents incorrect orientation during mating. This is critical in high-density 0.050-inch pitch assemblies with 58 pins where mis-mating could short adjacent signals. The key ensures correct insertion in automated assembly environments and in field service where connectors must be re-seated multiple times.
In which FPGA or compute module designs is the SFM-129-02-STL-D-A-K most commonly specified?
The SFM-129-02-STL-D-A-K is frequently used in Xilinx and Intel FPGA daughter card designs, COM Express carrier boards, and VME/VPX mezzanine modules that require 58 or more signal lines at a 0.050-inch pitch via SMT footprint. Its dual-row layout handles combined power and high-speed differential pairs within a single connector body, reducing overall connector count on the PCB.
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