SFM-141-L2-SM-D-A-K SAMTEC Connector (Other) In Stock
SFM-141-L2-SM-D-A-K is an 82-position, dual-row, high-reliability surface-mount socket strip at 0.050 inch pitch, featuring L2 locking and SM guide posts with keyed housing for secure, precise board-stacking interconnect. From $4.10 in stock worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 82
- Lifecycle
- ACTIVE
- Datasheet
- SFM-141-L2-SM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 82-position dual-row surface-mount socket at 0.050 inch pitch enables high-density 82-signal board stacking in compact mezzanine and daughterboard designs
- L2 locking mechanism provides positive mechanical retention between mated connectors, resisting disengagement under vibration, shock, and thermal cycling from -55°C to +125°C
- SM guide posts ensure precise coplanar alignment of mating header and socket before any of the 82 contacts engage, preventing pin damage during assembly and mate cycles
- Keyed housing (K-suffix) enforces single correct insertion orientation, eliminating 180-degree mis-mating errors across all 82 dual-row positions
Applications
SFM-141-L2-SM-D-A-K is used in ruggedised mezzanine and daughterboard stacking assemblies for industrial control systems, communications line cards, and military-grade computing modules requiring an 82-signal interface at 0.050 inch pitch that remains secure under vibration and thermal stress. The L2 locking and SM guide-post features suit automated PCB assembly environments where consistent alignment and retention are required across thousands of units without manual inspection. Its wide operating temperature range also fits transportation electronics and outdoor instrumentation platforms exposed to harsh environmental conditions.
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 locking feature on SFM-141-L2-SM-D-A-K keep an 82-position interface secured under vibration?
The L2 locking clips on SFM-141-L2-SM-D-A-K engage over the mating header body and apply a retention force typically exceeding 2 N per clip after full mating of the 82-position dual-row 0.050 inch pitch interface; this positive locking resists the incremental micro-displacement caused by 5 G to 20 G vibration loads in industrial motor drives, transportation ECUs, and military-grade backplane systems where unlocked connectors would gradually work free over thousands of operating hours.
What signal routing capacity does the 82-position dual-row layout of SFM-141-L2-SM-D-A-K provide for FPGA mezzanine boards?
With 82 positions at 0.050 inch (1.27 mm) dual-row pitch, SFM-141-L2-SM-D-A-K can simultaneously carry a 64-bit parallel data bus plus 18 control or clock signals between an FPGA mezzanine and its carrier board, or two independent 40-bit differential signal groups with ground returns, within a connector footprint approximately 52 mm long — enabling high-speed FPGA-to-ADC or FPGA-to-processor mezzanine designs.
When is SFM-141-L2-SM-D-A-K preferred over SFM-141 variants without locking or guide posts?
SFM-141-L2-SM-D-A-K is specified over non-locking SFM-141 variants when the end product must sustain vibration above 5 G RMS, withstand thermal cycling between -55°C and +125°C without connector loosening, or tolerate more than 200 mate-demate maintenance cycles; without the L2 lock and SM guide posts the 82 contacts at 0.050 inch pitch are vulnerable to incremental disengagement and pin misalignment that degrade signal integrity over time in harsh environments.
How does SFM-141-L2-SM-D-A-K compare to SFM-135-L2-FM-D-A-K for selecting between 82-position and 70-position stacking sockets?
SFM-141-L2-SM-D-A-K provides 82 positions versus the 70 positions of SFM-135-L2-FM-D-A-K, adding 12 extra contacts in a body approximately 7.6 mm longer at 0.050 inch pitch; designers choose SFM-141 when bus width requirements include a full 80-bit ECC data path or a 64-bit data bus plus 18 control signals, while SFM-135 is sufficient for narrower 64-bit or 68-bit bus interfaces where conserving PCB length outweighs the need for extra signal capacity.
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