SFM-123-T2-F-D-LC SAMTEC Connector (Other) In Stock
SAMTEC SFM-123-T2-F-D-LC is a 46-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for surface mount applications. It features flat (F) gold-plated contacts with lead coplanarity (LC) control ensuring reliable reflow solder joint formation across all 46 contacts. Available from stock worldwide for immediate procurement in prototyping and production volumes.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- SFM-123-T2-F-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-123-T2-F-D-LC?
- 46-position dual-row socket at 0.050" (1.27 mm) pitch, providing 23 positions per row for high-density PCB-to-PCB signal routing
- Lead Coplanarity (LC) feature maintaining all contacts within ±0.10 mm coplanarity for reliable reflow solder joint formation
- Flat (F) contact style with gold plating ensuring low contact resistance and consistent mating force over multiple insertion cycles
- High-reliability construction rated for demanding environments including instrumentation, defense, and aerospace board-to-board connections
What is SFM-123-T2-F-D-LC used for?
The SFM-123-T2-F-D-LC is designed for high-density board-to-board signal connections in applications such as FPGA mezzanine cards, DSP daughterboards, and compact embedded computing modules requiring 46 parallel signal paths at 0.050" pitch. Its lead coplanarity-controlled contacts are especially valuable in automated PCB assembly environments where solder joint consistency across all 46 positions must meet IPC-A-610 Class 3 quality standards. The connector is also widely used in military, aerospace, and high-reliability industrial equipment where long-term contact integrity is essential.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-123-T2-F-D-LC datasheet?
SFM-123-T2-F-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-123-T2-F-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the LC suffix in SFM-123-T2-F-D-LC mean for SMT assembly quality?
The LC suffix in SFM-123-T2-F-D-LC stands for Lead Coplanarity, meaning all 46 contacts are manufactured to remain within a coplanarity tolerance of ±0.10 mm. This tight coplanarity ensures that during solder reflow, every contact touches the PCB pad simultaneously, preventing open solder joints that can occur when even one contact in the 46-position row sits above the pad due to height variation. This is especially critical in IPC Class 3 high-reliability assemblies.
For a compact FPGA module with 46 signal lines, how does SFM-123-T2-F-D-LC compare to using multiple smaller connectors?
Using a single SFM-123-T2-F-D-LC to route 46 signals consumes a footprint approximately 29.2 mm long (23 positions × 1.27 mm pitch) compared to using three separate 16-position connectors with their own keep-out zones and alignment challenges. A single-connector approach reduces assembly placement steps, eliminates inter-connector signal skew from varying heights, and simplifies the PCB routing escape from the connector area, which is particularly advantageous on dense FPGA boards where routing channels are at a premium.
How many mating cycles is the SFM-123-T2-F-D-LC rated for, and what applications benefit from this durability?
SAMTEC's SFM series high-reliability socket strips are typically rated for a minimum of 100 to 500 mating cycles depending on contact finish specification, with gold-plated contacts maintaining contact resistance below 20 mΩ throughout the rated lifecycle. Applications that benefit from this durability include test and measurement jigs, field-replaceable module sockets in defense electronics, and development platforms where boards are frequently swapped during firmware development and verification.
Can the SFM-123-T2-F-D-LC be combined with its SAMTEC mating plug to create a defined board stack height?
Yes, the SFM-123-T2-F-D-LC mates with SAMTEC's SFM or TFM series plug headers at the same 0.050" (1.27 mm) pitch and 46-position dual-row footprint. The mated board stack height is determined by the mating header's above-board length, which SAMTEC offers in multiple options typically ranging from 4 mm to 11 mm mated height. Selecting the appropriate header height allows engineers to precisely control the clearance between stacked PCBs in compact multi-board assemblies.
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About SAMTEC
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