SFM-134-L2-F-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-134-L2-F-D-A-K is a 68-position dual-row high-reliability socket strip at 0.050" (1.27 mm) pitch in a surface-mount configuration, providing a fine-pitch socket interface for dense board-to-board and mezzanine interconnects. Gold-over-nickel contacts ensure reliable low-resistance mating through extended insertion cycles in industrial and instrumentation applications. Available in stock from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 68
- Lifecycle
- ACTIVE
- Datasheet
- SFM-134-L2-F-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 68-position dual-row layout at 0.050" (1.27 mm) fine pitch enables high signal density while maintaining a compact connector footprint on surface-mount PCBs
- High-reliability socket strip construction with gold-over-nickel contacts provides stable contact resistance and long service life across 100+ mating cycles
- Surface-mount termination compatible with standard lead-free reflow processes eliminates through-hole via drilling and simplifies multi-layer PCB fabrication
Applications
The SFM-134-L2-F-D-A-K is targeted at mezzanine card sockets, FPGA piggyback modules, and modular test fixtures requiring 68 fine-pitch signal connections in a minimal PCB footprint. Its 0.050" pitch consolidates 68 signals into a body length roughly half that of an equivalent 0.100" pitch connector, making it ideal for compact daughter-card designs in medical devices and high-channel-count data acquisition systems. The surface-mount termination simplifies assembly on high-density multi-layer PCBs manufactured through automated reflow soldering processes.
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 does the L2 designation in SFM-134-L2-F-D-A-K affect the connector's mounting height or lead style?
The L2 designation in the SFM-134-L2-F-D-A-K refers to the lead style variant that defines the surface-mount tail geometry and height above the PCB. Different L-series variants control the standoff height, which typically ranges from 1.5 mm to 4 mm, and the tail coplanarity tolerance critical for achieving uniform solder joint formation across all 68 positions during lead-free reflow at 260°C peak temperature.
For a medical data acquisition module needing 68 analog signal channels, why would a designer specify the SFM-134-L2-F-D-A-K over a standard 0.100" socket?
A 68-position socket at 0.050" (1.27 mm) pitch is approximately half the board length of an equivalent 0.100" socket, saving around 43 mm of PCB edge space in a dual-row configuration. Medical instruments with constrained form factors—such as patient monitoring modules or portable ultrasound front ends—benefit from this compact footprint while routing 68 analog input channels through a single high-reliability connector with gold-plated contacts rated for repeated card insertion.
What is the contact resistance specification for the SFM-134-L2-F-D-A-K and how does it affect signal integrity in high-speed differential pairs?
Samtec SFM series high-reliability socket strips maintain initial contact resistance below 20 mΩ per pin with gold-over-nickel plating, and this stays below 30 mΩ after 100 mating cycles. For high-speed differential pairs running at 1 Gbps to 3 Gbps, a 20 mΩ contact resistance introduces negligible voltage drop and contributes less than 0.1 dB insertion loss per contact, preserving signal integrity across the 68-position interface in data acquisition and communications mezzanine designs.
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