SFM-128-L2-H-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-128-L2-H-D-A-K-TR is a 56-position dual-row high-reliability socket strip with 0.050" pitch for surface mount applications. It provides gold-plated contacts at 2A per pin and operates reliably from -55°C to +125°C for high-cycle board-to-board interconnects. Tape-and-reel packaging supports automated SMT production.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- SFM-128-L2-H-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 56-position dual-row configuration at 0.050" (1.27 mm) pitch for compact high-density surface mount board-to-board interconnect
- Gold-plated contacts rated at 2A per pin with high mating-cycle life for reliable operation in demanding production environments
- Tape-and-reel (TR) packaging enabling automated pick-and-place assembly compatible with standard SMT reflow processes up to 260°C
Applications
The SFM-128-L2-H-D-A-K-TR is ideal for high-density mezzanine and board-to-board interconnect in FPGA daughter cards, embedded computing modules, and data communications line cards that require 56 signals at 0.050" pitch. Its surface mount construction and tape-and-reel packaging streamline automated SMT assembly for medium-to-high volume production PCBs. The wide -55°C to +125°C operating range also qualifies the connector for rugged industrial and avionics electronics subjected to extreme thermal cycling.
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 contacts does SFM-128-L2-H-D-A-K-TR provide, and how are they organized in the dual-row layout?
SFM-128-L2-H-D-A-K-TR offers 56 contacts arranged in 2 rows at 0.050" (1.27 mm) pitch, with 28 contacts per row. This dual-row configuration fits a large number of signals into a short connector body, making it a practical choice for FPGA expansion interfaces and processor mezzanine modules where board edge space is at a premium.
For an avionics module operating between -55°C and +85°C, does SFM-128-L2-H-D-A-K-TR meet the temperature requirement?
Yes, SFM-128-L2-H-D-A-K-TR is rated from -55°C to +125°C, exceeding the -55°C to +85°C range typical of commercial aviation electronics and meeting the full military temperature grade as well. Its gold-plated contacts maintain stable contact resistance across this range, ensuring reliable signal integrity in pressurized and unpressurized avionics enclosures.
How does the 0.050" pitch of SFM-128-L2-H-D-A-K-TR affect PCB routing compared to a 0.100" pitch alternative for 56 pins?
At 0.050" (1.27 mm) pitch, SFM-128-L2-H-D-A-K-TR spans approximately 35 mm row length for 28 pins per row, compared to roughly 70 mm for a 0.100" pitch equivalent. This 50% reduction in connector footprint frees significant PCB area for additional components or routing channels, which is especially valuable in high-layer-count boards above 8 layers where via field density is already a constraint.
In a production environment, what SMT reflow temperature profile is compatible with SFM-128-L2-H-D-A-K-TR?
SFM-128-L2-H-D-A-K-TR is compatible with standard lead-free reflow profiles peaking at 260°C, matching the JEDEC J-STD-020 classification for surface mount components. This allows it to be assembled alongside standard SMT ICs, capacitors, and resistors in a single oven pass, eliminating any need for a separate low-temperature soldering step and maintaining a streamlined assembly workflow for volumes of 1000 or more boards.
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