SFM-149-02-H-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-149-02-H-D-A-K is a 98-position, dual-row, 0.050" pitch high-reliability surface-mount socket strip with horizontal mating and kinked contacts, designed for dense high-speed board-to-board interconnects.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- SFM-149-02-H-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 98-position dual-row SMT socket strip at 0.050" (1.27 mm) pitch — among the highest contact counts available in this pitch class — for maximum signal density on a compact PCB footprint
- Horizontal (H) mating orientation combined with kinked (K) contacts improves board retention and solder joint robustness under vibration and thermal cycling
- High-reliability construction targets demanding environments including defense avionics, industrial automation, and telecom line-card applications requiring stable contact resistance across thousands of cycles
Applications
The SFM-149-02-H-D-A-K is engineered for very high-density board-to-board socket connections in FPGA mezzanine cards, high-speed backplanes, and processor module basecards that demand 98 signal paths within the 0.050" pitch family. Its horizontal mating profile with kinked lead contacts provides added solder joint reliability in ruggedized environments such as military communication systems, avionics computers, and industrial edge servers.
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 kinked (K) contact option on the SFM-149-02-H-D-A-K contribute to SMT solder joint reliability?
The kinked (K) contact geometry introduces a bend in the SMT lead that acts as a stress-relief feature. During thermal cycling, the PCB and connector body expand and contract at slightly different rates; the kink absorbs this differential strain across all 98 dual-row contacts, reducing the risk of solder joint fatigue cracking that would otherwise occur with straight leads under repeated temperature excursions between -40 and 85 degrees Celsius.
How does the 0.050" pitch of the SFM-149-02-H-D-A-K enable designers to route 98 signals in a smaller PCB area than standard 0.100" pitch sockets?
At 0.050" (1.27 mm) pitch, the SFM-149-02-H-D-A-K packs 98 contacts into roughly the same linear board length that a 0.100" pitch connector would use for 49 contacts. For FPGA mezzanine cards or processor modules carrying high-speed data buses, the 0.050" pitch socket reduces connector footprint by approximately 50 percent in each row direction compared to 0.100" alternatives, freeing board area for decoupling capacitors or signal routing layers.
Which high-reliability sectors and system types commonly specify the SFM-149-02-H-D-A-K?
The SFM-149-02-H-D-A-K is specified in defense electronics, aerospace avionics, high-performance computing, and telecom infrastructure. Typical applications include 98-position dual-row sockets on VITA-57 FPGA mezzanine cards, ruggedized single-board computer basecards, radar signal-processing boards, and industrial Ethernet switches where consistent contact resistance and long service life are required across extreme temperature and vibration conditions.
For a PCB designer evaluating the SFM-149-02-H-D-A-K against a lower-count 0.050" socket, when is the 98-position variant the right choice?
The 98-position SFM-149-02-H-D-A-K is the right choice when a single connector must carry more than 80 signals or mixed signal-and-power rails across a board-to-board interface, and splitting those connections across multiple shorter connectors would create mechanical alignment risks or layout complexity. The single 98-position dual-row body at 0.050" pitch provides one precisely aligned mating interface, simplifying the PCB land pattern and reducing the number of connector stock-keeping units in production.
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