SFM-142-L2-FM-D-LC SAMTEC Connector (Other) In Stock
SAMTEC SFM-142-L2-FM-D-LC is an 84-position dual-row high-reliability surface mount socket strip with a 1.27 mm (0.050 inch) pitch and low-clearance (LC) design. Features gold-plated contacts and a compact board profile for space-constrained installations. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 84
- Lifecycle
- ACTIVE
- Datasheet
- SFM-142-L2-FM-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-142-L2-FM-D-LC?
- 84-position dual-row layout at 1.27 mm (0.050 inch) pitch achieving high contact density in a minimal PCB surface mount footprint
- Low-clearance (LC) design providing reduced board-to-board stack height for ultra-compact mezzanine module assemblies
- High-reliability socket strip with gold-plated contacts delivering low contact resistance below 20 milliohms across all 84 positions
- Surface mount configuration enabling automated pick-and-place and reflow soldering for high-volume PCB production
What is SFM-142-L2-FM-D-LC used for?
The SFM-142-L2-FM-D-LC is used in ultra-compact mezzanine designs, avionics sub-modules, and wearable medical devices where board-to-board socket connections must fit within severely constrained vertical clearance. Its 1.27 mm pitch dual-row SMT format supports high-density 84-pin interfaces on miniaturized FPGA boards, DSP modules, and portable instrumentation. The low-clearance profile enables stacked PCB assemblies with a minimal inter-board gap while maintaining reliable contact performance.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-142-L2-FM-D-LC datasheet?
SFM-142-L2-FM-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-142-L2-FM-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the LC (low-clearance) designation mean for SFM-142-L2-FM-D-LC in compact stacked board designs?
The LC suffix denotes a low-clearance configuration that minimizes the height of the mated connector stack compared to standard SFM socket variants. This allows designers to achieve board-to-board stack heights as small as 2 mm to 4 mm, making the SFM-142-L2-FM-D-LC ideal for ultra-thin portable devices, avionics cards, and miniaturized industrial modules where the total PCB assembly envelope is restricted to less than 10 mm in height.
How many signal channels can be routed through a single SFM-142-L2-FM-D-LC, and what bus architectures does this support?
The SFM-142-L2-FM-D-LC provides 84 total contact positions across 2 rows at 1.27 mm pitch, supporting parallel buses of up to 64 bits plus 20 additional pins for power, ground, control, and clock signals. This single-connector 84-pin interface eliminates the need for multiple lower-count connectors on mezzanine boards. It is compatible with 3.3 V and 1.8 V LVDS or LVCMOS logic interfaces commonly used on FPGA and ARM processor modules.
What is the recommended mating header for the SFM-142-L2-FM-D-LC, and what contact resistance is specified?
The SFM-142-L2-FM-D-LC mates with SAMTEC's TFM-142 series dual-row 1.27 mm pitch headers. The mated contact resistance is specified below 20 milliohms across all 84 positions, with gold-plated contacts rated for a minimum of 30 mating cycles in standard high-reliability socket strip specifications. The TFM mating header is available in both through-hole and surface mount versions to accommodate a variety of board-to-board stacking configurations.
Is SFM-142-L2-FM-D-LC suitable for aerospace and defense applications, and what environmental ratings apply?
Yes, the SFM-142-L2-FM-D-LC is a high-reliability socket strip designed for demanding aerospace, defense, and industrial environments. The connector is rated for operating temperatures from -55°C to +125°C, and the gold-plated contact finish resists oxidation in high-humidity environments. SAMTEC SFM series connectors meet applicable sections of MIL-DTL-55302 high-reliability connector standards, making them suitable for avionics, satellite modules, and military electronic subsystems requiring 84-position fine-pitch interconnects.
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