SFM-125-L2-LM-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-125-L2-LM-D-A-K-TR is a 50-position dual-row high-reliability socket strip with 1.27mm (0.050") pitch in a surface mount package for dense board-to-board interconnects. Designed for high-cycle mating in military, aerospace, and industrial applications. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 50
- Lifecycle
- ACTIVE
- Datasheet
- SFM-125-L2-LM-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 50-position dual-row socket strip at 1.27mm (0.050") pitch delivering high-density SMD board-to-board connectivity in compact form factor
- High-reliability construction rated for demanding mating cycles in aerospace, defense, and industrial applications requiring long service life
- Surface mount termination enabling automated reflow assembly and compatibility with standard SMD PCB manufacturing processes
Applications
The SFM-125-L2-LM-D-A-K-TR is used as a high-reliability SMD socket strip in FPGA mezzanine boards, military avionics modules, and test-and-measurement instrument backplanes where 50 dual-row contacts at 1.27mm pitch are required. Its high-cycle rated construction supports frequent board removal and reinsertion in field-serviceable industrial equipment and modular aerospace systems. The 0.050 inch pitch socket strip is also a common choice for high-density expansion interfaces on embedded computing platforms.
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 pitch and contact count does the SFM-125-L2-LM-D-A-K-TR offer, and how does this compare to 0.100 inch pitch connectors?
The SFM-125-L2-LM-D-A-K-TR features 50 positions in a dual-row layout at 1.27mm (0.050 inch) pitch, providing 25 contacts per row. Compared to standard 2.54mm (0.100 inch) pitch connectors, the 0.050 inch pitch delivers approximately twice the contact density per unit PCB length, enabling higher pin-count connections within the same board area. This makes it ideal for FPGA I/O expansion headers and dense module interfaces.
What makes SFM-125-L2-LM-D-A-K-TR suitable for aerospace and defense applications requiring high mating cycle reliability?
SAMTEC's SFM series is designed to meet high-reliability connector requirements with robust socket contact design rated for many hundreds of mating cycles. The connector construction uses quality contact materials and plating optimized for low contact resistance over repeated insertions, making the SFM-125-L2-LM-D-A-K-TR well suited for avionics line-replaceable units (LRUs), military ruggedized computers, and test equipment requiring frequent module swapping over a service life of 10 or more years.
How does the SMD mounting of SFM-125-L2-LM-D-A-K-TR benefit board assembly compared to through-hole socket strips?
The surface mount (SMD) termination of the SFM-125-L2-LM-D-A-K-TR allows it to be placed by pick-and-place equipment and soldered via standard reflow processes, avoiding the through-hole drilling required for PTH socket strips. This reduces PCB fabrication cost, supports finer pitch layouts, and allows connector placement on densely routed 8-layer or higher PCBs where drill clearances for 50-pin through-hole connectors would consume excessive routing space.
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.”