SFM-119-L2-LM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-119-L2-LM-D-A-K is a 38-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for surface mount PCB assembly. Features long-machined (LM) contacts with gold plating for superior signal integrity. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 38
- Lifecycle
- ACTIVE
- Datasheet
- SFM-119-L2-LM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 38 positions in a dual-row 0.050" (1.27 mm) pitch SMT layout delivering high pin density for compact mezzanine card interfaces
- Long-machined (LM) precision contacts with gold plating provide lower contact resistance and 500+ mating cycle durability
- High-reliability construction suitable for FPGA mezzanine, FMC daughter cards, and rugged mil-aero board stack-ups
Applications
The SFM-119-L2-LM-D-A-K is engineered for high-reliability mezzanine interconnects in FPGA carrier boards, FMC modules, and mil-aero avionics systems requiring 38 signal connections at 0.050" pitch. Its dual-row surface mount design supports mixed signal and differential pair routing across compact PCB assemblies in test and measurement equipment. The long-machined contact construction extends service life for applications requiring repeated module swaps during field maintenance 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
What distinguishes the LM (long-machined) contact in SFM-119-L2-LM-D-A-K from a standard stamped contact?
The long-machined (LM) contacts in the SFM-119-L2-LM-D-A-K are precision-turned from solid brass stock, providing tighter dimensional tolerances of ±0.013 mm compared to ±0.05 mm for stamped contacts. This translates to contact resistance below 10 mΩ and a rated cycle life of 500 or more mating cycles, making them suitable for FMC module swap applications and avionics line-replaceable unit (LRU) connectors.
For an FPGA mezzanine card design, how does the 38-position dual-row SFM-119-L2-LM-D-A-K support high-speed signal routing?
The 38-position dual-row layout at 0.050" (1.27 mm) pitch provides 38 signal paths within approximately 0.95 inch of board edge, allowing differential pairs for LVDS and LVECL signals at data rates up to 3.5 Gbps per pair. The tight pitch and precise gold-plated contacts maintain impedance continuity across the mated interface, supporting FPGA high-speed serial links in compact mezzanine stack designs.
How does the SFM-119-L2-LM-D-A-K compare to the SFM-119-L2-FM-D-A-K when selecting contacts for a high-cycle test fixture?
The LM (long-machined) version carries a cycle life rating of 500+ mating cycles versus approximately 200 cycles for the FM (friction mate) stamped contact version. For a test fixture where boards are swapped 3 to 5 times per day, the LM variant will last 3 to 8 months longer before contact wear exceeds the 30 mΩ contact resistance limit, reducing fixture maintenance downtime and spare parts cost over a 2-year production run.
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