SFM-149-L2-STL-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-149-L2-STL-D-A-K is a 98-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch in a surface mount configuration. It features gold-plated contacts for low contact resistance and long mating cycle life, designed for high-density board-to-board interconnects in demanding applications. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- SFM-149-L2-STL-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 layout at 0.050" (1.27 mm) pitch enables ultra-high density board-to-board signal routing in compact SMT footprints
- High-reliability gold-plated socket contacts rated for extended mating cycles maintain low contact resistance in harsh vibration and thermal environments
- Surface mount termination supports automated reflow assembly at up to 260°C, eliminating through-hole drilling cost for 98-pin connector footprints
Applications
The SFM-149-L2-STL-D-A-K is used in high-density FPGA daughtercard sockets, memory expansion modules, and high-speed digital communication backplanes where 98 signal paths must be routed across a minimal board area at 0.050" (1.27 mm) pitch. Its SMT construction is compatible with automated PCB assembly lines handling large-format connector bodies in radar, communications, and defense electronics. Test and measurement instruments and high-performance computing carrier boards also use this connector for modular daughtercard interconnects requiring reliable signal integrity across hundreds of mating cycles.
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 signal positions does the SFM-149-L2-STL-D-A-K provide and how are they arranged?
The SFM-149-L2-STL-D-A-K provides 98 positions arranged in a dual-row configuration at 0.050" (1.27 mm) pitch, with 49 contacts in each row. This dual-row 1.27 mm pitch layout achieves approximately twice the contact density of standard 0.100" (2.54 mm) pitch connectors, enabling complex 98-signal interfaces within a PCB footprint suitable for compact FPGA module and memory daughtercard designs.
What mating connector series is compatible with the SAMTEC SFM-149-L2-STL-D-A-K socket strip?
The SFM-149-L2-STL-D-A-K mates with SAMTEC TSM and TFM series 0.050" dual-row pin headers, which are available in through-hole and SMT variants for board-to-board or wire-to-board applications. The mated assembly delivers reliable electrical contact across the 98 positions with gold-plated interface pairs, supporting signal frequencies up to several hundred MHz in high-density digital bus architectures and differential pair routing layouts.
How does the SFM-149-L2-STL-D-A-K hold up under the thermal and vibration stresses of defense electronics environments?
SAMTEC's SFM series high-reliability socket strips are designed with a robust SMT body and gold-plated contacts that maintain contact resistance below 20 mΩ after thermal cycling from -55°C to +125°C and mechanical vibration testing per MIL-STD-202 conditions. The 98-position configuration distributes mechanical stress across the full connector length, reducing solder joint fatigue compared to smaller connectors carrying the same signal count in a denser footprint.
For a compact radar signal processor board, how much PCB length does the SFM-149-L2-STL-D-A-K occupy?
At 0.050" (1.27 mm) pitch with 49 positions per row, the SFM-149-L2-STL-D-A-K occupies approximately 49 × 1.27 mm = 62.2 mm of board edge length in the dual-row SMT footprint. This compares favorably to equivalent 98-position 0.100" pitch connectors that would require 124.5 mm of board edge, making the SFM-149-L2-STL-D-A-K the preferred choice for compact radar signal processor PCBs with tight real estate constraints.
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