SFM-149-02-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-149-02-STL-D-A-K is a 98-position dual-row high-reliability surface mount socket strip with 0.050" (1.27 mm) pitch featuring STL tail style and A-K options for secure card-edge mating. Delivers high contact density in a compact SMT footprint for fine-pitch applications. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- SFM-149-02-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 98 positions in a dual-row 0.050" (1.27 mm) pitch layout, providing up to 98 signal channels in a compact SMT footprint
- High-reliability socket strip construction with STL tail style for secure soldering and mechanical retention
- D (double-row) configuration with A-K variant options enables customized mating interface and keying for error-proof assembly
- Fine 0.050" pitch reduces PCB area by up to 50% compared to 0.100" pitch equivalents for space-constrained designs
Applications
The SFM-149-02-STL-D-A-K is designed for fine-pitch high-density board interconnects in aerospace avionics, military electronics, and high-performance computing modules where 98 contacts at 0.050" pitch enable tight integration. Its high-reliability construction suits rugged applications subject to vibration and thermal cycling across -55°C to +125°C temperature ranges. The surface mount format and STL tails support automated SMT assembly in volume production of FPGA mezzanine cards and data acquisition modules.
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 0.050" pitch of SFM-149-02-STL-D-A-K compare to standard 0.100" pitch connectors in terms of board area savings?
At 0.050" (1.27 mm) pitch, the SFM-149-02-STL-D-A-K occupies approximately 25% of the PCB length required by a 0.100" pitch connector carrying the same 98 positions. This 4x linear pitch reduction translates directly into board area savings critical for compact embedded modules, miniaturized avionics line-replaceable units, and wearable medical devices where every square millimeter of PCB real estate is constrained.
For which rugged environments is the SFM-149-02-STL-D-A-K high-reliability socket strip rated?
The SFM-149-02-STL-D-A-K high-reliability designation targets environments involving mechanical shock, vibration up to 20 G, and thermal cycling between -55°C and +125°C, making it suitable for military avionics, oil and gas downhole tools, and space-qualified PCB assemblies. The robust socket contact retention force and STL solder tail geometry resist solder joint fatigue over thousands of thermal cycles.
What does the STL tail style on SFM-149-02-STL-D-A-K mean for PCB soldering compatibility?
The STL (surface mount tail) style on SFM-149-02-STL-D-A-K provides flat, co-planar solder tails optimized for standard SMT reflow processes at peak temperatures up to 260°C. The co-planar tail geometry ensures consistent solder paste coverage across all 98 positions during reflow, reducing bridging risk on fine 0.050" pitch pads compared to through-hole or press-fit alternatives.
How many signal channels can SFM-149-02-STL-D-A-K support and in which high-speed applications is this contact count valuable?
With 98 total contacts across 2 rows of 49 positions each at 0.050" pitch, SFM-149-02-STL-D-A-K can simultaneously route up to 98 signal channels including differential pairs, power rails, and ground returns. This channel count supports interfaces such as PCIe x8 with auxiliary signals, 25 GbE optical transceiver modules, and FPGA mezzanine cards following the FMC (VITA 57.1) standard that typically requires 68 to 160 high-speed pins.
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