SFM-142-L2-STL-D-A-K SAMTEC Connector (Other) In Stock
The SFM-142-L2-STL-D-A-K is an 84-position dual-row high-reliability socket strip from SAMTEC with a 0.050-inch (1.27 mm) pitch for surface mount board-to-board interconnect applications. It features a low-profile housing with solderable tabs and latching hardware for secure mechanical retention in demanding system designs. Available from global distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 84
- Lifecycle
- ACTIVE
- Datasheet
- SFM-142-L2-STL-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 84-position dual-row layout at 0.050-inch (1.27 mm) pitch delivering high-density signal connectivity in a compact surface mount footprint
- Solderable latch tabs (STL) and mechanical retention key (K) ensuring robust board-to-board mating integrity under vibration and shock
- High-reliability SAMTEC SFM series construction with gold-plated contacts rated for demanding mating cycles in industrial and FPGA module applications
Applications
The SFM-142-L2-STL-D-A-K is designed for high-density mezzanine board interconnects in FPGA daughter-cards, server acceleration modules, and industrial computing backplanes requiring a secure 84-pin surface mount socket with mechanical locking. Its low-profile dual-row configuration at 1.27 mm pitch enables compact PCB layouts, and the solderable latch tabs provide the additional mechanical retention needed for vibration-prone robotics and motion control systems.
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 position count and pitch does the SFM-142-L2-STL-D-A-K provide for high-density board-to-board interconnects?
The SFM-142-L2-STL-D-A-K features 84 total positions in a dual-row arrangement with a 0.050-inch (1.27 mm) pitch, providing 42 contacts per row. This high-density configuration supports up to 84 simultaneous signal connections in a compact surface mount footprint, making it ideal for FPGA daughter-card and mezzanine board applications where minimizing connector occupied board area is critical.
What do the STL and K suffixes in the SFM-142-L2-STL-D-A-K part number signify for mechanical design?
In SAMTEC's SFM series nomenclature, STL denotes solderable latch tabs that anchor the connector housing to the PCB for improved mechanical retention during mating and unmating cycles. The K suffix indicates a polarization key or mechanical alignment feature that prevents incorrect connector insertion. Together, these features ensure the 84-position connector remains securely seated under vibration loads up to the rated mating force specification.
How does the SFM-142-L2-STL-D-A-K surface mount design simplify PCB routing compared to through-hole equivalents?
The surface mount design of the SFM-142-L2-STL-D-A-K eliminates the need for 84 plated-through holes in the PCB, freeing all copper layers beneath the connector footprint for signal routing. This is particularly valuable in multi-layer FPGA boards where signal escape from a dense 0.050-inch pitch dual-row connector requires full use of inner layers, and through-hole vias would block the routing channels needed for high-speed differential pairs.
When is the SFM-142-L2-STL-D-A-K preferred over SAMTEC's QSH or QTH series for mezzanine interconnects?
The SFM-142-L2-STL-D-A-K is preferred when a 0.050-inch (1.27 mm) pitch is required for compatibility with legacy SFM-series mating headers, or when the 84-position count fits the signal budget without the higher-density 0.8 mm pitch of SAMTEC's QSH or QTH series. The STL latch tabs also provide stronger mechanical hold than many QSH configurations, making the SFM series more suitable for connectors exposed to regular mating cycles in test fixtures requiring secure 84-pin retention.
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