SFM-105-L2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-105-L2-STL-D-A-K is a 10-position dual-row high-reliability surface-mount socket strip on 0.050 inch pitch for compact high-density board-to-board connections. Straddle-mount style with gold-plated contacts for reliable signal integrity in space-constrained designs. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- SFM-105-L2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.050 inch (1.27 mm) pitch enables twice the pin density of standard 0.100 inch connectors in the same PCB footprint area
- High-reliability socket design with gold-plated contacts supports 500+ mating cycles without degradation in signal integrity
- Dual-row 10-position layout provides 10 contacts in a compact surface-mount straddle footprint for daughter card applications
- Straddle-mount style aligns the PCB edge for vertical daughter card interconnection, saving height compared to vertical socket alternatives
Applications
The SFM-105-L2-STL-D-A-K is designed for high-density daughter card interconnects in aerospace, defense, and telecommunications equipment where 0.050 inch pitch maximizes signal count within tight PCB real estate. Its high-reliability gold contact system supports frequent mating in test fixtures and field-replaceable module applications. Surface-mount straddle placement simplifies PCB fabrication by eliminating through-hole drilling for the socket body.
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 is the pin pitch of SFM-105-L2-STL-D-A-K and how does it compare to standard 0.100 inch connectors?
SFM-105-L2-STL-D-A-K uses a 0.050 inch (1.27 mm) pitch, which is exactly half the spacing of standard 0.100 inch connectors. This allows 10 positions to occupy the same PCB length that a 0.100 inch connector would use for only 5 positions. For high-density applications requiring 40 or more signals, the 0.050 inch pitch can reduce connector footprint length by up to 50% compared to 0.100 inch alternatives.
How does the straddle-mount style of SFM-105-L2-STL-D-A-K reduce connector height in a daughter card assembly?
The straddle-mount design clamps over the PCB edge, so the connector body sits at board height rather than rising 5 mm to 8 mm above it as a conventional vertical socket would. This keeps the total mated height close to the PCB thickness plus contact engagement depth — typically under 6 mm — which is critical in chassis designs with 8 mm or less vertical clearance above the board.
What contact finish does SFM-105-L2-STL-D-A-K use and how does it affect long-term reliability in cycling applications?
SFM-105-L2-STL-D-A-K uses gold-plated contacts, which resist oxidation and maintain contact resistance below 20 mΩ across hundreds of mating cycles. Gold plating is critical at 0.050 inch pitch because the small contact area means any surface film or corrosion product can cause disproportionately large resistance increases. This makes gold-finished contacts the standard choice for high-reliability applications requiring 500 or more mating cycles.
For a compact RF or digital module requiring 10 signals, how does SFM-105-L2-STL-D-A-K fit a space-constrained board layout?
With 10 positions on 0.050 inch pitch in a dual-row straddle configuration, SFM-105-L2-STL-D-A-K occupies approximately 6.4 mm of PCB edge length for the contact array. Compared to a 10-position single-row 0.100 inch connector needing 11.4 mm, the SFM saves over 40% of the edge connector footprint, freeing space for decoupling capacitors or shielding structures adjacent to the connector zone.
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