SFM-146-L2-FM-D-A SAMTEC Connector (Other) In Stock
SFM-146-L2-FM-D-A is a SAMTEC 92-position dual-row high-reliability surface-mount socket strip at 0.050" (1.27 mm) pitch. Offers gold-plated contacts with flush-mount termination for low-profile PCB assemblies. Available in stock worldwide with competitive pricing.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 92
- Lifecycle
- ACTIVE
- Datasheet
- SFM-146-L2-FM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 92-position dual-row layout at 1.27 mm pitch delivers 46 circuits per row for extremely high-density board-to-board connectivity
- Flush-mount (FM) termination style provides a low-profile SMT footprint suitable for compact multilayer PCB assemblies
- Gold-plated contact finish with nickel underplate ensures contact resistance below 20 mΩ and corrosion resistance over thousands of mating cycles
- High-reliability construction rated for -55 °C to +125 °C and 2 A per pin, meeting industrial and defense interconnect standards
- Dual-row socket mates with SAMTEC TSM and SFM pin-header families at identical 1.27 mm pitch for a complete ecosystem solution
Applications
The SFM-146-L2-FM-D-A is used in high-density mezzanine card interconnects found in FPGA carrier boards, server blade backplanes, and modular test instrumentation where 92 circuits must pass through a compact 1.27 mm pitch zone. Its flush-mount termination makes it particularly attractive in space-constrained handheld test equipment and ruggedized military electronics where component height is strictly controlled. Communications and radar processing modules also rely on this connector for reliable differential-pair routing between daughter cards operating in vibration-prone field environments.
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
How many positions and rows does the SFM-146-L2-FM-D-A provide, and what is its contact pitch?
The SFM-146-L2-FM-D-A has 92 positions arranged in 2 rows at a 1.27 mm (0.050 inch) pitch, giving 46 contacts per row. This high circuit count on a compact footprint makes it one of SAMTEC's larger SFM-series socket strips, suitable for FPGA and processor module mezzanine stacking where dozens of address, data, and control lines must route between boards.
What does the flush-mount (FM) termination mean for PCB assembly and board height?
The flush-mount termination places the solder tails flush to the PCB surface rather than extending below it, eliminating the need for through-hole clearance in multi-layer stack-ups. This reduces the total board-to-board stack height by several tenths of a millimeter compared to standard SMT tails, which is critical in handheld and rack-mount designs with height budgets under 10 mm.
What current and temperature ratings does the SFM-146-L2-FM-D-A carry for power and signal lines?
Each of the 92 contacts is rated at 2 A continuous current, and the connector is specified for operation from -55 °C to +125 °C. This allows designers to dedicate several pins to power delivery — for example, 10 pins at 2 A each supply 20 A to a daughter card — while the remaining 82 pins carry high-speed signals, all within a single standardized connector.
Which SAMTEC header families mate with the SFM-146-L2-FM-D-A?
The SFM-146-L2-FM-D-A mates with SAMTEC TSM and SFM dual-row pin-header plugs at 1.27 mm pitch in a 46-column by 2-row configuration. Available mating headers span stack heights from approximately 4 mm to 20 mm, allowing the designer to set the precise board-to-board separation needed for component clearance while maintaining 92-circuit connectivity and mechanical alignment.
How does the SFM-146-L2-FM-D-A compare to the SFM-127-T2-STL-D-A for applications needing more circuits?
The SFM-146-L2-FM-D-A provides 92 positions versus 54 positions on the SFM-127-T2-STL-D-A, a 70% circuit count increase at the same 1.27 mm pitch. Both share the same dual-row SMT format and 2 A per pin current rating, so migrating from the 54-position to the 92-position variant typically requires only a PCB footprint update with no changes to connector mating force or tooling.
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