SFM-137-02-F-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-137-02-F-D-A-K is a 74-position dual-row high-reliability SMT socket strip with 0.050" (1.27 mm) pitch, featuring a floating (F) alignment design and keyed polarization for precision board-to-board mating. Ideal for dense signal interconnects on compact PCBs. From $7.00; in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 74
- Lifecycle
- ACTIVE
- Datasheet
- SFM-137-02-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" (1.27 mm) pitch delivers high signal density in a compact SMT socket footprint
- Floating (F) contact design provides self-alignment tolerance to compensate for PCB-to-PCB coplanarity variation during mating
- Keyed (K) polarization prevents 180-degree mis-insertion across all 74 contact positions in dual-row SMT assemblies
Applications
The SFM-137-02-F-D-A-K is designed for high-channel-count board-to-board signal interconnects in embedded computing platforms, FPGA expansion modules, and data-acquisition systems requiring 74-position dual-row SMT connectivity at 0.050" pitch. Its floating alignment feature tolerates slight PCB misalignment during board stacking, making it reliable for rack-mounted modules and plug-in daughter cards in precision instrumentation systems.
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 floating (F) designation provide for SFM-137-02-F-D-A-K mating alignment?
The F (floating) designation on the SFM-137-02-F-D-A-K means the socket contact housing can absorb minor lateral PCB misalignment during mating — critical in 74-position dual-row assemblies at 0.050" (1.27 mm) pitch where even a fraction of a millimeter of coplanarity variation across the board stack can cause contact damage without floating compliance.
How does keyed (K) polarization on SFM-137-02-F-D-A-K reduce assembly risk across 74 positions?
The K (keyed) feature physically blocks reversed mating of the SFM-137-02-F-D-A-K plug and socket pair, preventing incorrect signal connection across all 74 contacts. For dual-row 0.050" pitch connectors where both orientations may appear visually identical, this polarization key is a critical safeguard during PCB assembly and field module replacement.
For which FPGA or embedded computing designs is SFM-137-02-F-D-A-K a strong candidate?
The SFM-137-02-F-D-A-K suits FPGA daughter-card-to-carrier-board interconnects, SoM (system-on-module) connectors, and high-channel-count data-acquisition expansion boards that need 74 signal positions at 1.27 mm pitch in a compact SMT footprint with floating compliance for reliable mating in rack or cassette assemblies.
How does SFM-137-02-F-D-A-K compare to a rigid 74-position SMT socket without the floating feature?
A rigid 74-position SMT socket at 0.050" pitch requires near-perfect board coplanarity for all 74 contacts to engage simultaneously, while the SFM-137-02-F-D-A-K floating design accommodates lateral offsets of typically 0.3 mm to 0.5 mm, reducing the risk of bent contacts or intermittent connections in production board-stack assemblies with typical PCB flatness tolerances.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”