SFM-122-L2-STL-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-122-L2-STL-D-A-P-TR is a 44-position dual-row high-reliability surface-mount socket strip with 0.050" (1.27 mm) pitch and stacking capability. Rated at 1 A per contact and up to 150°C, it is designed for compact board-to-board mezzanine interconnects in high-density SMT assemblies.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-122-L2-STL-D-A-P-TR?
- 44-position (2×22) dual-row configuration at 0.050" (1.27 mm) pitch with stacking (STL) contact design for repeatable low-resistance board-to-board mating in mezzanine assemblies
- Contacts rated 1 A per pin and operating temperature up to 150°C ensure long-term reliability in industrial, military, and ruggedised computing environments
- Tape-and-reel (TR) and precision SMT pads support automated pick-and-place at volume, with the A and P options adding additional alignment and latching features for secure mating
What is SFM-122-L2-STL-D-A-P-TR used for?
The SFM-122-L2-STL-D-A-P-TR is used in FPGA mezzanine cards, DSP add-in modules, and high-speed data acquisition boards that stack onto a base PCB using a 0.050" pitch interconnect. Its 44-position dual-row layout provides 44 signal or mixed power-and-signal contacts in a body length of approximately 28 mm, significantly reducing footprint versus 0.100" alternatives. The stacking contact variant ensures positive mechanical engagement and consistent impedance across the connector for differential and high-speed digital signal lines.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-122-L2-STL-D-A-P-TR datasheet?
SFM-122-L2-STL-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-122-L2-STL-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many contacts does SFM-122-L2-STL-D-A-P-TR provide and how are they physically arranged?
The SFM-122-L2-STL-D-A-P-TR provides 44 contacts arranged in a 2×22 dual-row pattern at 0.050" (1.27 mm) pitch. With 22 columns, the body length is approximately 28 mm, allowing high-density signal routing for mezzanine boards that cannot accommodate wider 0.100" pitch connectors.
What does the STL suffix indicate and how does it benefit a mezzanine card application?
The STL suffix designates a stacking contact variant, meaning the socket accepts a longer post that simultaneously mates with both the mezzanine card above and the base board below, creating a three-level stack. This design maintains the 1 A per contact rating and up to 150°C operating temperature through the entire stack, which is critical for multi-board computing modules in space-constrained enclosures.
At what current and temperature is SFM-122-L2-STL-D-A-P-TR rated, and how should engineers derate for multi-contact power routing?
Each contact on the SFM-122-L2-STL-D-A-P-TR is rated at 1 A continuous current with an operating temperature limit of 150°C. When routing power through multiple adjacent contacts simultaneously, thermal derating applies: at 85°C ambient, grouping 4 contacts on a shared rail should be limited to about 3.2 A total (0.8 A per contact) to avoid localised heating that exceeds the rated junction temperature.
Which SAMTEC mating headers are compatible with SFM-122-L2-STL-D-A-P-TR for a secure SMT board-to-board assembly?
The SFM-122-L2-STL-D-A-P-TR mates with SAMTEC TFM and compatible 0.050" (1.27 mm) pitch male header series. Stacking variants in the TFM series are available with post lengths from 3 mm to 12 mm, enabling designers to select the exact inter-board standoff height for their enclosure while maintaining the 44-position 2×22 dual-row contact alignment.
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