SFM-126-T2-FM-D-A-K-TR SAMTEC Connector (Other) In Stock
SFM-126-T2-FM-D-A-K-TR is a 52-position dual-row high-reliability socket strip from SAMTEC with 0.050-inch pitch and surface-mount termination, providing 104 gold-plated contacts. Features floating-mount design for board-to-board misalignment tolerance and is supplied in tape-and-reel. Suited for high-density mezzanine and expansion module interconnects.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 52
- Lifecycle
- ACTIVE
- Datasheet
- SFM-126-T2-FM-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 52-position dual-row floating-mount socket strip with 0.050-inch (1.27 mm) pitch providing 104 gold-plated contacts
- Floating-mount (FM) design accommodates ±0.5 mm PCB-to-PCB misalignment, reducing assembly stress and improving mating reliability
- Gold-plated contacts rated for 1 A per pin with contact resistance below 20 mΩ across 500+ mating cycles
- Tape-and-reel packaging for automated pick-and-place SMT assembly compatible with reflow soldering up to 260°C
Applications
The SFM-126-T2-FM-D-A-K-TR is suited for floating-mount board-to-board interconnect in applications where PCB-to-PCB alignment tolerances of ±0.5 mm are required, such as server mezzanine cards, ruggedized military electronics modules, and high-speed optical transceiver interfaces. Its 104-contact configuration supports multi-lane data buses, power rails, and control signals on a single connector at 1.27 mm pitch. Industrial embedded computing platforms and avionics data acquisition systems benefit from the improved mating reliability the floating design provides over rigid press-fit alternatives.
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 does the floating-mount (FM) feature of the SFM-126-T2-FM-D-A-K-TR provide in board-to-board assemblies?
The floating-mount (FM) design of the SFM-126-T2-FM-D-A-K-TR accommodates up to ±0.5 mm lateral PCB-to-PCB misalignment during mating, significantly reducing mechanical stress on solder joints and PCB pads. This self-centering capability is critical in stacked board assemblies where manufacturing tolerances or thermal expansion can cause slight misregistration across the 104-pin interface.
How many contacts does the SFM-126-T2-FM-D-A-K-TR provide and at what pitch are they arranged?
The SFM-126-T2-FM-D-A-K-TR provides 104 contacts in a 52-position dual-row configuration at 0.050-inch (1.27 mm) pitch. This combination allows high-density signal and power routing across a compact SMT footprint, supporting parallel data buses up to 48 bits wide plus dedicated power and ground pins in a single connector footprint.
What current rating and mating-cycle durability does the SFM-126-T2-FM-D-A-K-TR deliver?
Each contact is rated for 1 A continuous current, and the connector is qualified for a minimum of 500 mating cycles while maintaining gold-plated contact resistance below 20 mΩ. The operating temperature range extends from -55°C to 125°C, making it durable in thermally demanding environments such as industrial control enclosures and military avionics racks.
Is the SFM-126-T2-FM-D-A-K-TR suitable for lead-free automated SMT production?
Yes, the SFM-126-T2-FM-D-A-K-TR is supplied in tape-and-reel (TR) for standard pick-and-place equipment and supports lead-free reflow soldering at peak temperatures up to 260°C per IPC/JEDEC J-STD-020, complying with RoHS Directive 2011/65/EU. Its SMT termination pads are designed for standard PCB land patterns enabling straightforward integration into automated high-volume production lines.
Related Guides
How to Choose a Digital Potentiometer: AD5204, AD5206, and AD8403 Selection Guide
Compare the AD5204, AD5206, and AD8403 multi-channel SPI digipots by channel count, resistance value, and package to choose the right Analog Devices digital potentiometer for your design.
Jun 21, 2026
AD7745 / AD7746 / AD7747 Capacitance-to-Digital Converter Design Guide
Complete application note for the AD774x CDC family: circuit design, shielding, conversion rate selection, and sourcing guidance for the AD7745, AD7746, and AD7747.
Jun 21, 2026
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”