SFM-110-L2-STL-D-A-P SAMTEC Connector (Other) In Stock
SFM-110-L2-STL-D-A-P is a 20-position dual-row high-reliability surface-mount socket strip from SAMTEC with 0.050" pitch, low-profile STL stackup, and alignment pins for precise PCB mating. From $2 in stock worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SFM-110-L2-STL-D-A-P Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 20-position dual-row layout on 0.050" (1.27 mm) pitch provides compact board-to-board signal routing in a small PCB footprint
- STL (short-tail lead) termination style optimizes solder joint height and coplanarity for reliable reflow on thin PCBs
- Alignment pins (P suffix) ensure accurate mating registration, preventing connector skew during repeated mate-unmate cycles
- High-reliability socket design with robust contact retention suitable for industrial and portable instrument stacking applications
Applications
The SFM-110-L2-STL-D-A-P is used in compact mezzanine and stacking board designs for portable test instruments, industrial sensor modules, and embedded computing platforms where 20 signals must be routed between two PCBs in a small envelope. Its alignment pin feature prevents connector skew during assembly and field servicing, reducing the risk of mis-mating on boards with limited visual access. The surface-mount STL termination style is compatible with standard SMT reflow processes, supporting both low-volume prototyping and higher-volume automated manufacturing.
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 termination style on the SFM-110-L2-STL-D-A-P mean for PCB assembly?
The STL (short-tail lead) termination on the SFM-110-L2-STL-D-A-P produces a shorter solder tail than standard SMT leads, which reduces the overall connector height above the PCB and improves coplanarity across all 20 contacts. Better coplanarity lowers the risk of open solder joints during reflow, particularly important on thin or flexible PCBs where board warpage can cause taller leads to lift off the pad.
Why do the alignment pins on the SFM-110-L2-STL-D-A-P reduce assembly errors in stacked PCB designs?
The P suffix indicates integral alignment pins that register the SFM-110-L2-STL-D-A-P to matching holes in the mating PCB before the 20 signal contacts engage. This mechanical pre-alignment prevents a 0.050-inch (1.27 mm) pitch connector from mating one pin offset, which would short adjacent signals and damage both boards. Alignment pins are especially valuable in field-serviceable rack modules where technicians replace boards without removing adjacent assemblies.
Which SAMTEC mating headers pair with the SFM-110-L2-STL-D-A-P for a 20-position board-stacking design?
The SFM-110-L2-STL-D-A-P mates with SAMTEC TFM and TSM dual-row headers sharing the same 0.050-inch (1.27 mm) pitch and 20-position count. Available stacking heights range from 2 mm to over 15 mm, allowing engineers to set exact board separation based on component height or airflow clearance requirements in compact embedded computing and portable instrument stacks.
For a portable test instrument, how compact is the SFM-110-L2-STL-D-A-P board footprint?
The SFM-110-L2-STL-D-A-P occupies a footprint of approximately 0.65 inches (16.5 mm) in body length by 0.145 inches (3.7 mm) in width for the 20-position dual-row 0.050-inch pitch layout. This compact size makes it practical for PCBs in handheld instruments, medical monitoring devices, and small industrial controllers where multiple connectors must coexist within a 50 × 50 mm PCB area.
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