SFM-137-T2-F-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-137-T2-F-D-A-K is a 74-position dual-row high-reliability surface-mount socket strip with 0.050 inch pitch and flush-mount termination. Engineered for high-density SMT board-to-board applications. Available from global distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 74
- Lifecycle
- ACTIVE
- Datasheet
- SFM-137-T2-F-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 74-position dual-row layout at 0.050 inch (1.27 mm) pitch provides 37 contacts per row for compact high-signal-count PCB interfaces
- Flush-mount (F) termination style sits flush with the PCB surface, minimizing total height and enabling ultra-thin stacked board assemblies
- Keyed and polarized housing with -A-K options prevents incorrect mating across all 74 positions during automated and manual assembly
Applications
The SFM-137-T2-F-D-A-K is designed for ultra-thin stacked PCB applications in portable medical devices, industrial handhelds, and compact embedded controllers where the connector must sit flush with the board surface to meet tight mechanical tolerances. Its 74-position dual-row configuration at 0.050 inch pitch accommodates wide parallel data buses and mixed signal-power interfaces in a fraction of the area required by standard-pitch connectors. The flush-mount termination also simplifies gasketing and EMI shielding around the connector perimeter in sealed enclosure designs.
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 flush-mount termination on the SFM-137-T2-F-D-A-K differ from low-mount variants and what height does it achieve?
The flush-mount (F) termination on the SFM-137-T2-F-D-A-K means the solder tails extend to the same level as the bottom of the connector body, resulting in an above-board height that is typically 0.5 mm to 1 mm lower than low-mount (LM) variants. This allows the mated pair to achieve a board-to-board stack height as low as 4 mm, compared to 5 mm to 6 mm for standard LM designs.
Can the SFM-137-T2-F-D-A-K handle differential signal pairs at 2.5 Gbps in a compact embedded system?
Yes. The SFM-137-T2-F-D-A-K at 0.050 inch (1.27 mm) pitch supports differential signal pairs at data rates up to 2.5 Gbps per pair when used with a properly matched 100-ohm differential PCB trace layout. With 74 positions (37 per row), up to 18 differential pairs can be routed, leaving contacts available for power and ground return paths to maintain signal integrity.
Is SFM-137-T2-F-D-A-K a suitable alternative to SFM-137-L2-STL-D-A-K for applications with strict height budgets?
The SFM-137-T2-F-D-A-K is the preferred choice over SFM-137-L2-STL-D-A-K when the board-to-board stack height must be minimized below 5 mm, because its flush termination reduces the footprint profile by approximately 1 mm to 2 mm. Both carry 74 positions on a 0.050 inch pitch dual-row layout, so the PCB footprint and signal count are identical; only the termination height and solder joint geometry differ.
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