SFM-137-L2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-137-L2-STL-D-A-K is a 74-position dual-row high-reliability surface-mount socket strip with 0.050 inch pitch. Designed for high-density SMT applications. Available from global distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 74
- Lifecycle
- ACTIVE
- Datasheet
- SFM-137-L2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 74-position dual-row configuration on 0.050 inch (1.27 mm) pitch enables very high contact density in a compact SMT footprint
- High-reliability socket strip construction with stamped-and-formed contacts suitable for automated pick-and-place assembly
- Surface-mount termination style with kinked tails provides excellent solder joint strength and coplanarity for high-cycle applications
Applications
The SFM-137-L2-STL-D-A-K is ideal for high-density PCB-to-PCB mating in rack-mount servers, industrial controllers, and test-and-measurement equipment where 74 signal lines must be routed in minimal board space. Its surface-mount design with 0.050 inch pitch integrates cleanly into automated SMT assembly lines, reducing through-hole tooling costs. The high-reliability socket construction is also used in aerospace avionics and ruggedized embedded computing platforms where connector integrity over thousands of mating cycles is required.
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 does the 0.050 inch pitch of the SFM-137-L2-STL-D-A-K compare to standard 0.100 inch headers in terms of board space savings?
The SFM-137-L2-STL-D-A-K uses a 0.050 inch (1.27 mm) pitch, which is half the spacing of standard 0.100 inch (2.54 mm) headers. This halves the row-to-row distance and reduces the total connector footprint by approximately 75%, allowing 74 dual-row contacts to occupy roughly the same area as a 37-position standard connector, freeing board space for other components.
In which high-density signal routing applications is SFM-137-L2-STL-D-A-K most commonly used?
This 74-position surface-mount socket strip is commonly used in rack servers, FPGA development boards, and industrial automation controllers where 74 or more signal lines must be interconnected between PCBs. The dual-row 0.050 inch pitch layout supports data buses running at speeds above 100 MHz and current ratings up to 1 A per contact in these high-signal-count systems.
What is the mating connector family for the SFM-137-L2-STL-D-A-K and how do I select the correct pin header?
The SFM series mates with SAMTEC's TSM or TMM series pin headers at the same 0.050 inch pitch and dual-row count. For the 74-position (37 per row) version, the corresponding pin header would be a 37-position dual-row part from the TMM family. Verify the stacking height requirement, which is typically 4 mm to 11 mm, before selecting the mating connector.
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