SFM-117-L2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-117-L2-STL-D-A-K is a 34-position dual-row high-reliability surface mount socket strip at 0.050" (1.27 mm) pitch with straddle mount option. Gold-plated contacts support 1A per pin across an operating range of -55°C to +125°C. Available from global distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 34
- Lifecycle
- ACTIVE
- Datasheet
- SFM-117-L2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 34-position dual-row high-reliability socket strip at 0.050" (1.27 mm) pitch for compact high-density signal interconnect
- Straddle mount (STL) configuration allows PCB edge installation to maximize usable board area on the primary side
- L2 contact length variant optimizes mating engagement depth and over-travel for controlled normal force
- Gold-plated contacts rated at 1A per pin deliver stable low contact resistance over extended service life
Applications
The SFM-117-L2-STL-D-A-K is designed for edge-mount board-to-board interconnects in high-reliability defense, aerospace, and industrial electronics where PCB area is constrained. Its straddle-mount construction allows the 34-position dual-row socket to be installed along the PCB edge, freeing internal board space for active components in FPGA and DSP modules. The 0.050" pitch and gold-plated contacts support demanding signal integrity requirements in data acquisition, radar processing, and ruggedized embedded computing platforms.
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 straddle mount option mean for PCB layout when using the SFM-117-L2-STL-D-A-K?
The STL (straddle mount) option positions the SFM-117-L2-STL-D-A-K so that it straddles the edge of the PCB, with solder tails on both the top and bottom copper layers. This configuration maximizes the usable area on the primary component side of the board and enables direct edge mating to a mating header without additional standoffs or brackets, reducing the overall stack height by several millimeters compared to vertical connector approaches.
How many signal pins does SFM-117-L2-STL-D-A-K provide, and how does that map to practical connector use cases?
The SFM-117-L2-STL-D-A-K provides 34 pins in a dual-row arrangement, giving 17 pins per row at 0.050" (1.27 mm) pitch. This count is well matched to FPGA daughter cards requiring 32 data lines plus 2 control signals, digital bus interfaces (e.g., 32-bit parallel buses), and mixed analog-digital front-end modules in test and measurement instruments.
What is the current capacity of SFM-117-L2-STL-D-A-K, and how should power and ground pins be allocated?
Each of the 34 pins on the SFM-117-L2-STL-D-A-K is rated at 1A per pin. For power distribution, designers commonly dedicate multiple adjacent pins to VCC and GND, effectively summing their current capacities — for example, using 4 pins for each power rail delivers up to 4A, leaving the remaining 26 pins for signal routing in a compact edge-mount module.
How does the L2 contact length variant of SFM-117-L2-STL-D-A-K affect mating connector selection?
The L2 designation specifies the contact beam length within the socket cavity, which determines the acceptable mating header pin length range and the resulting normal force at full engagement. Using the L2 variant with the correct Samtec SMM or TSM mating header pin length ensures the gold-plated contact beam operates within its designed deflection range of approximately 0.3 mm to 0.5 mm, maintaining rated contact resistance below 30 milliohms over the specified insertion cycle life.
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