SFM-122-T2-STL-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-122-T2-STL-D-A-P-TR is a 44-position dual-row high-reliability socket strip with 0.050" (1.27mm) pitch in SMT package. Features STL (stand-off) profile, A (action) contact, and P polarization key for robust board-to-board stacking. Available on tape and reel for automated production assembly worldwide.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 44-position dual-row 1.27mm pitch SMT socket strip rated 1A per contact with STL stand-off profile for precise board separation control
- A (action) wiping contact design ensures contact resistance below 20 milliohms across 500+ mating cycles for reliable signal integrity
- P polarization key and tape-and-reel packaging prevent mis-mating errors and support high-volume automated pick-and-place assembly
Applications
The SFM-122-T2-STL-D-A-P-TR is designed for high-density board-to-board stacking applications in FPGA daughter cards, wireless module interfaces, and high-speed data acquisition systems requiring 44 controlled-impedance connections. Its STL stand-off profile provides a defined mechanical standoff that maintains consistent board separation for coplanar PCB assemblies, critical in RF and mixed-signal designs. The action contact design and polarization key together improve manufacturing yield in automated SMT assembly lines handling large volumes.
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 STL stand-off profile mean for the SFM-122-T2-STL-D-A-P-TR board-to-board clearance?
The STL stand-off profile on the SFM-122-T2-STL-D-A-P-TR incorporates a molded standoff foot that establishes a fixed mechanical spacing between the two mated PCBs, typically 3mm to 5mm depending on the mating header. This precise spacing prevents the boards from rocking under vibration and maintains consistent coplanarity across all 44 positions, which is important for high-speed differential signal pairs where even sub-millimeter misalignment can affect impedance continuity.
For a 44-signal FPGA expansion module, how many mating cycles can the SFM-122-T2-STL-D-A-P-TR reliably support?
The A (action) contact design on the SFM-122-T2-STL-D-A-P-TR is rated for a minimum of 500 mating cycles while maintaining contact resistance below 20 milliohms per contact. Gold-plated contacts with the wiping action keep oxidation off the contact surfaces even in humid environments. This makes the 44-position connector suitable for prototyping fixtures and lab equipment where expansion boards are frequently swapped, unlike lower-grade connectors rated for only 30 to 50 cycles.
How does sourcing the SFM-122-T2-STL-D-A-P-TR in tape-and-reel format reduce production assembly costs?
The TR (tape-and-reel) packaging of the SFM-122-T2-STL-D-A-P-TR eliminates manual handling of individual parts and enables automatic pick-and-place machines to place each 44-position connector at a rate of several hundred parts per hour with placement accuracy of ±0.05mm. Compared to bulk tray packaging, tape-and-reel reduces setup time per reel change and lowers the risk of bent contacts, which is significant for a 44-position 1.27mm pitch part where contact damage rates from manual handling can reach 2% to 5% at high volume.
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