SFM-126-L2-H-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-126-L2-H-D-A-K is a 52-position dual-row high-reliability socket strip at 1.27 mm (0.050 inch) pitch with surface mount termination and gold-plated contacts, built for dense fine-pitch mezzanine card interconnects.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 52
- Lifecycle
- ACTIVE
- Datasheet
- SFM-126-L2-H-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-126-L2-H-D-A-K?
- 52-position dual-row configuration at 1.27 mm pitch provides 26 differential pair capacity in a compact SMT footprint
- High-reliability SFM series socket construction with gold-plated contacts for consistent signal integrity across thousands of mating cycles
- L2 solder tail style optimized for surface mount reflow soldering, eliminating through-hole PCB requirements
- Compatible with SAMTEC TSM series 1.27 mm pin headers for reliable mezzanine and daughterboard connections
What is SFM-126-L2-H-D-A-K used for?
The SFM-126-L2-H-D-A-K is engineered for high-density mezzanine card, daughterboard, and FMC-compatible socket interconnect applications in FPGA evaluation boards, high-speed data acquisition modules, and embedded computing systems where 52 fine-pitch contacts are required. Its 1.27 mm pitch accommodates 26 differential pairs in a surface mount footprint roughly half the size of equivalent 2.54 mm connectors. The gold-plated contacts and high-reliability construction make it suitable for aerospace, defense, and industrial instrumentation applications demanding long service life.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-126-L2-H-D-A-K datasheet?
SFM-126-L2-H-D-A-K Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-126-L2-H-D-A-K?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 1.27 mm pitch of SFM-126-L2-H-D-A-K benefit high-speed signal routing compared to 2.54 mm alternatives?
At 1.27 mm pitch, the SFM-126-L2-H-D-A-K doubles the contact density relative to standard 2.54 mm connectors, accommodating 26 differential pairs in the same board area that a 26-pin 2.54 mm connector would occupy. This reduced pitch also lowers inter-pin capacitance, supporting signal transmission at frequencies beyond 1 GHz with lower crosstalk.
What mating connector is designed for use with the SFM-126-L2-H-D-A-K socket strip?
The SFM-126-L2-H-D-A-K mates with SAMTEC TSM-series or compatible 1.27 mm pitch dual-row pin headers. The mating connector must have a 26-position-per-row arrangement matching the 52-pin SFM socket, and the gold-to-gold mating contact resistance is typically less than 20 milliohms per contact.
In what way is the SFM-126-L2-H-D-A-K different from the SFM-123-T2-H-D-A-K and when should each be chosen?
The SFM-126 has 52 positions (26 per row) versus the SFM-123's 46 positions (23 per row), and uses an L2 solder tail versus T2, which differs in lead geometry for specific PCB land patterns. Designers choose SFM-126 when 6 more signal lines are needed, or when the L2 footprint aligns better with the target PCB layout constraints.
What operating temperature range is typical for SAMTEC SFM-series connectors like SFM-126-L2-H-D-A-K?
SAMTEC SFM-series high-reliability connectors are typically rated for operating temperatures from -55°C to +125°C, making them suitable for industrial, aerospace, and defense applications subject to wide ambient temperature swings and thermal cycling stresses.
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