SFM-149-L2-S-D-A SAMTEC Connector (Other) In Stock
SAMTEC SFM-149-L2-S-D-A is a 98-position dual-row surface mount socket strip with 0.050" pitch and L2 locking features. Built for high-reliability board-to-board connections, it provides stable mating with precision contacts. Available from authorized distributors with global shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- SFM-149-L2-S-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 98-position dual-row socket strip on 0.050" (1.27 mm) pitch enables ultra-high-density interconnects
- L2 locking mechanism provides secure mating retention to prevent accidental disconnection under vibration
- Surface mount termination supports automated reflow assembly for high-volume manufacturing
Applications
The SFM-149-L2-S-D-A is well-suited for high-density mezzanine board stacking and module-on-board applications in networking equipment, embedded computing, and test instrumentation. Its 98-position dual-row layout accommodates wide parallel buses and multiple power-ground pairs in a compact SMT footprint. The L2 locking feature adds mechanical security in applications subject to shock or vibration such as industrial and military electronics.
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 does the SFM-149-L2-S-D-A provide per row, and what is the center-to-center pitch?
The SFM-149-L2-S-D-A offers 98 total positions arranged in 2 rows of 49 contacts each, with a 0.050" (1.27 mm) center-to-center pitch. This high-density layout allows routing of wide 32-bit or 64-bit parallel buses with ground pins on a board area under 65 mm long.
What mechanical advantage does the L2 locking feature provide compared to standard SFM connectors without a latch?
The L2 locking feature adds a positive retention latch that requires deliberate force — typically above 5 N axial pull — to unmate, compared to standard friction-fit SFM headers that can separate under sustained vibration above 10 g. This makes the SFM-149-L2-S-D-A preferable for ruggedized enclosures in industrial, military, or transportation electronics where accidental disconnection would be a failure mode.
Which high-speed digital protocols can the SFM-149-L2-S-D-A support on a mezzanine backplane design?
With 98 contacts on a 0.050" pitch, the SFM-149-L2-S-D-A can carry LVDS pairs, PCIe lanes, USB 3.0 differential signals, and SGMII Ethernet — each requiring 100 Ω differential impedance traces on the PCB. At 1.27 mm pitch the signal integrity is maintained up to approximately 3 Gbps per lane when routed with matched-length differential pairs and controlled-impedance PCB stackup.
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