SFM-140-02-FM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-140-02-FM-D-A-K is an 80-position dual-row high-reliability surface-mount socket strip with 0.050" (1.27 mm) pitch for dense board-to-board and mezzanine interconnects. Gold-plated contacts rated at 1 A per pin deliver consistent performance across thousands of mating cycles. Available from global authorized distributors with fast delivery.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 80
- Lifecycle
- ACTIVE
- Datasheet
- SFM-140-02-FM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 80-position dual-row layout at 0.050" (1.27 mm) pitch maximizes signal count within a compact SMT footprint
- FM (friction-mount) variant simplifies board placement and provides mechanical retention prior to soldering
- Gold-plated contacts ensure reliable low-resistance connections supporting 1 A per pin in mixed signal-power applications
- High-reliability construction rated for thousands of mating cycles suits mil-aero and industrial applications requiring long service life
Applications
The SFM-140-02-FM-D-A-K is suited for high-density FPGA and DSP mezzanine boards, networking line cards, and backplane daughter-card interfaces where 80 signals at 0.050" pitch enable maximum interconnect density. Its FM friction-mount feature holds the connector in position during PCB handling before reflow, reducing placement defects in volume production. The part is also used in test-and-measurement and defense electronics requiring robust multi-cycle mating performance.
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
What does the FM suffix indicate in the SFM-140-02-FM-D-A-K part number?
FM stands for friction-mount, meaning the connector body has snap-fit or friction features that hold it against the PCB surface before and during reflow soldering. This prevents the 80-position part from shifting during handling or conveyor transport, which is critical for maintaining accurate placement across all contacts.
How many positions and at what pitch does the SFM-140-02-FM-D-A-K provide?
The SFM-140-02-FM-D-A-K has 80 positions arranged in 2 rows at 0.050" (1.27 mm) pitch, yielding 40 contacts per row. This high density allows routing up to 80 signal or power lines between stacked boards in a footprint significantly smaller than equivalent 0.100" pitch connectors.
In a high-speed FPGA mezzanine design, how does the SFM-140-02-FM-D-A-K support signal integrity at data rates above 1 Gbps?
At 0.050" pitch the short stub lengths and compact dual-row geometry reduce parasitic inductance and capacitance per contact, which helps maintain signal integrity for differential pairs operating at 1 Gbps to 3 Gbps. Pairing the connector with a matched SFM header and controlled-impedance PCB stack-up extends this performance to multi-gigabit mezzanine interfaces.
Which mating header families are compatible with the SFM-140-02-FM-D-A-K socket strip?
The SFM socket strip mates with SAMTEC's SFM and TFM series headers at 0.050" (1.27 mm) pitch, available in stacking heights from approximately 4 mm to 20 mm to match the required board-to-board spacing. SAMTEC also offers board spacers and alignment posts that can be used alongside the 80-position connector to ensure parallel board orientation.
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