SFM-110-02-STL-D-A SAMTEC Connector (Other) In Stock
SAMTEC SFM-110-02-STL-D-A is a 20-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch, gold-plated mating contacts, and surface mount termination. It measures 0.575" long and features peg board mounting with anti-backout retention for secure board-to-board connectivity. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- SFM-110-02-STL-D-A Datasheet PDF
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 20-position dual-row socket on 0.050" (1.27 mm) pitch delivering 20 contacts in a compact 0.575" x 0.145" body
- Gold (Au) mating contact finish providing low contact resistance and corrosion resistance across thousands of mating cycles
- Anti-backout (A) retention feature preventing unintentional connector disengagement under vibration and mechanical stress
- Peg (PEG) board mounting for temporary PCB positioning and stability during the soldering process
Applications
The SFM-110-02-STL-D-A is designed for compact mezzanine and module interconnects in embedded computing, instrumentation, and communications equipment requiring 20-pin dual-row socket connectivity at 1.27 mm pitch with gold contact reliability. The gold mating finish and anti-backout retention ensure consistent performance in high-cycle test fixtures, removable daughterboards, and field-replaceable modules. The surface mount profile enables integration into automated PCB reflow assembly processes.
Specifications
| Factory Lead Time | 2 Weeks, 5 Days |
| YTEOL | 9.4 |
| Board Mounting Option | PEG |
| Body Breadth | 0.145inch |
| Body Depth | 0.185inch |
| Body Length | 0.575inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD |
| Contact Finish Termination | Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Color | BLACK |
| JESD-609 Code | e0 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.7178mm |
| Rated Current (Signal) | 3.2A |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 20 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | USA, Vietnam |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact finish does the SFM-110-02-STL-D-A use, and why does it matter for high-cycle mating applications?
The SFM-110-02-STL-D-A features gold (Au) plating on the mating contacts over a nickel (Ni) barrier, with tin/lead (Sn/Pb) on the termination side. Gold mating surfaces maintain contact resistance below a few milliohms across thousands of insertion cycles without oxidation, making this connector suitable for test sockets, frequently swapped daughterboards, and prototype modules that undergo hundreds or more connect-disconnect cycles before end of life.
For a 20-pin dual-row mezzanine interface at 1.27 mm pitch, how compact is the SFM-110-02-STL-D-A's footprint on the PCB?
The SFM-110-02-STL-D-A body measures 0.575 inch (14.6 mm) long, 0.145 inch (3.7 mm) wide, and 0.185 inch (4.7 mm) deep. Mounting all 20 contacts in this dual-row 1.27 mm pitch footprint occupies approximately 54 mm² of board area, which is less than half the area an equivalent 0.100" pitch 20-pin connector would require, enabling denser PCB layouts in compact embedded modules.
How does the anti-backout (A) retention in SFM-110-02-STL-D-A differ from a standard socket strip without retention?
A standard socket strip relies solely on contact spring force to hold the mated header in place, which can allow slow axial drift under vibration over time. The anti-backout A option adds a mechanical stop or latch that physically blocks withdrawal until intentionally released, maintaining contact engagement across all 20 pins under shock loads and continuous vibration profiles up to several hundred Hz that would gradually dislodge unretained connectors in industrial and robotics applications.
Does the SFM-110-02-STL-D-A require peg holes in the PCB, and what assembly benefit does the peg mounting provide?
The PEG board mounting option on the SFM-110-02-STL-D-A includes small plastic pegs that insert into corresponding 0.9 mm to 1.0 mm diameter holes in the PCB, temporarily fixing the connector's position before soldering. This prevents the connector from shifting or tombstoning during the reflow oven pass, ensuring all 20 SMT pads land accurately within ±0.05 mm of their target pads for reliable solder joint formation in automated production.
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