SFM-120-T2-STL-D-LC SAMTEC Connector (Other) In Stock
SAMTEC SFM-120-T2-STL-D-LC is a 40-position dual-row high-reliability SMT socket strip with 1.27 mm (0.050 inch) pitch, featuring stainless steel contacts with gold plating and a low-clearance design. Supports 1.0 A per pin at 105°C. In stock worldwide.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- SFM-120-T2-STL-D-LC Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-120-T2-STL-D-LC?
- 40-position dual-row SMT socket strip with 1.27 mm (0.050") pitch for fine-pitch high-density connections
- Stainless steel contacts with gold plating (STL) providing corrosion resistance and low contact resistance
- Low-clearance (LC) design minimizing installed height for board stacking and space-constrained applications
- High-reliability rated construction suitable for aerospace, defense, and industrial environments
What is SFM-120-T2-STL-D-LC used for?
The SFM-120-T2-STL-D-LC serves aerospace electronics, defense systems, and industrial modules where fine-pitch 1.27 mm (0.050 inch) pitch dual-row SMT socket connectors with stainless steel gold-plated contacts and low clearance are essential. Its 40-position layout provides 20 signal pairs in a minimal footprint ideal for compact mezzanine and module-to-board interfaces. The low-clearance profile enables tight board-to-board stacking in height-restricted enclosures.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-120-T2-STL-D-LC datasheet?
SFM-120-T2-STL-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-120-T2-STL-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the STL suffix in SFM-120-T2-STL-D-LC indicate about contact material?
STL designates stainless steel contacts with gold plating in the SFM-120-T2-STL-D-LC. Stainless steel provides higher mechanical strength and corrosion resistance than brass or phosphor bronze contacts, while gold plating ensures low contact resistance across all 40 positions. This combination is selected for high-reliability aerospace and defense interconnect designs requiring stable electrical performance over extended service life and repeated mating cycles at up to 105°C.
How does the low-clearance (LC) feature benefit board-stacking designs using SFM-120-T2-STL-D-LC?
The LC (low-clearance) designation means the SFM-120-T2-STL-D-LC has a reduced installed height, which directly decreases the board-to-board separation in stacked PCB assemblies. This is critical for avionics, ruggedized embedded systems, and compact industrial modules where minimizing total stack height is a mechanical design constraint. The 40-position 1.27 mm pitch configuration still provides 20 signal pairs within this reduced height profile, maintaining connectivity density while fitting tighter enclosures.
For a 40-signal mezzanine interface, why select SFM-120-T2-STL-D-LC over a 2.54 mm pitch alternative?
The SFM-120-T2-STL-D-LC operates at 1.27 mm pitch, providing 40 positions in approximately half the board length required by a 2.54 mm pitch connector with the same pin count. For mezzanine and daughter-card designs where PCB real estate is limited, this finer pitch reduces connector footprint significantly. Stainless steel gold-plated contacts and the high-reliability rating additionally meet aerospace qualification standards that standard 2.54 mm pitch connectors may not satisfy.
What current rating does each pin in SFM-120-T2-STL-D-LC support?
Each of the 40 positions in the SFM-120-T2-STL-D-LC supports 1.0 A per pin continuous current, with an operating temperature rating up to 105°C. The gold-plated stainless steel contacts maintain low resistance at rated current levels, making the connector suitable for mixed signal and low-power supply connections in high-reliability aerospace, defense, and industrial PCB designs that operate in elevated-temperature environments.
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