SFM-129-L2-STL-D-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-129-L2-STL-D-K-TR is a 58-position dual-row surface-mount socket strip with 0.050" (1.27 mm) pitch, featuring an L2 longer tail and STL extended standoff for elevated clearance. Tape-and-reel packaging suits high-volume SMT assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 58
- Lifecycle
- ACTIVE
- Datasheet
- SFM-129-L2-STL-D-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 58-position dual-row socket at 0.050" (1.27 mm) pitch with L2 longer solder tail for improved SMT solder joint strength
- STL extended standoff height provides additional board clearance, accommodating taller components beneath the mated connector stack
- Tape-and-reel (TR) format compatible with automated pick-and-place SMT lines, supporting high-volume production efficiency
Applications
The SFM-129-L2-STL-D-K-TR is well-suited for industrial embedded systems, high-density backplane assemblies, and computing modules that require elevated clearance between stacked boards. Its 58-position dual-row 0.050" SMT design allows reliable high-signal-count interconnects where component height beneath the connector demands the STL standoff variant.
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 do the L2 and STL designations mean in the SFM-129-L2-STL-D-K-TR part number?
L2 indicates a longer solder tail, which improves SMT joint strength and thermal cycling reliability, while STL designates an extended standoff height to provide extra vertical clearance in the 58-position dual-row 0.050" pitch stack assembly.
For a backplane design with tall SMD components, does the SFM-129-L2-STL-D-K-TR provide enough clearance?
The STL (extended standoff) variant of the SFM-129 provides a taller mated height than the standard option—often several millimeters above the board surface—accommodating SMD components that would otherwise conflict with a standard-height 58-position 0.050" pitch socket.
How does SFM-129-L2-STL-D-K-TR compare to SFM-130-T2-STL-D-K-TR for a 58-vs-60-position interface decision?
The SFM-129 provides 58 positions and the SFM-130 provides 60 positions, both at 0.050" (1.27 mm) pitch with an extended standoff. If the interface protocol allocates exactly 58 signals, SFM-129-L2-STL-D-K-TR is the preferred choice to avoid unused contact pairs.
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