SFM-127-T2-STL-D-A SAMTEC Connector (Other) In Stock
SFM-127-T2-STL-D-A is a SAMTEC 54-position dual-row high-reliability surface-mount socket strip at 0.050" (1.27 mm) pitch. Features gold-plated contacts and stainless-steel locking hardware for secure mating. Available in stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Datasheet
- SFM-127-T2-STL-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 54-position dual-row configuration at 1.27 mm (0.050”) pitch for high-density SMT board-to-board mating
- High-reliability stainless-steel locking hardware with gold-plated 30 µin contact finish for low-contact-resistance interconnects
- Surface-mount termination style compatible with standard SMT reflow assembly, eliminating through-hole drilling costs
- Dual-row socket design mates with SAMTEC SFM/TSM series headers for secure mechanical retention in vibration environments
- Rated for 2 A per pin current carrying capacity and operating temperatures from -55 °C to +125 °C
Applications
The SFM-127-T2-STL-D-A is commonly used in high-density board-to-board interconnect applications such as mezzanine card stacking in FPGA development boards, test and measurement instrumentation, and embedded computing modules where 1.27 mm pitch allows compact 54-circuit connectivity. Its stainless-steel locking mechanism makes it especially reliable in industrial automation equipment and defense electronics subject to mechanical shock and vibration. Engineers in RF and communications hardware favor this series for its low insertion loss and repeatable gold-contact interface across hundreds of mating cycles.
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 circuits does the SFM-127-T2-STL-D-A provide and at what pitch?
The SFM-127-T2-STL-D-A offers 54 positions arranged in a dual-row layout at a 1.27 mm (0.050 inch) pitch. This gives 27 contacts per row, enabling a compact high-density interconnect footprint that fits within space-constrained PCB layouts typical of mezzanine and module-on-module stacking architectures.
What current rating and temperature range does the SFM-127-T2-STL-D-A support in continuous operation?
Each contact in the SFM-127-T2-STL-D-A is rated at 2 A continuous current, and the connector operates reliably across a temperature range of -55 °C to +125 °C. These ratings suit it for power distribution signals alongside data lines in industrial, military, and high-temperature embedded computing applications.
What contact plating finish does the SFM-127-T2-STL-D-A use and why does it matter for signal integrity?
The SFM-127-T2-STL-D-A uses gold-plated contacts with 30 µin gold over nickel barrier, providing stable contact resistance below 20 mΩ and excellent corrosion immunity. This finish is critical for high-cycle test sockets and signal-integrity-sensitive differential pairs where oxide buildup on lesser-plated contacts would degrade BER over time.
Which mating connector families are compatible with the SFM-127-T2-STL-D-A on the plug side?
The SFM-127-T2-STL-D-A mates with SAMTEC's TSM and SFM-series pin-header plugs at the same 1.27 mm pitch and dual-row pattern. Compatible plug options include straight and right-angle through-hole variants with stack heights from 4 mm to 20 mm, giving designers flexibility to set the board-to-board spacing while maintaining 54-circuit connectivity.
Is the SFM-127-T2-STL-D-A suitable for automated SMT assembly with standard reflow profiles?
Yes. The SFM-127-T2-STL-D-A uses surface-mount termination pads compatible with standard lead-free reflow profiles up to 260 °C peak. The solder pad pattern is provided in SAMTEC's land pattern library, and the connector body is rated for at least 3 reflow cycles, enabling pick-and-place assembly without manual through-hole operations.
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