SFM-144-L2-FM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-144-L2-FM-D-A-K is an 88-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for very high-density surface-mount board-to-board interconnects. Gold-plated contacts are rated at 1 A per pin with an operating temperature range from -55°C to +125°C for industrial and defense electronics. Widely in-stock worldwide for rapid delivery across prototyping and production programs.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 88
- Lifecycle
- ACTIVE
- Datasheet
- SFM-144-L2-FM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 88-position dual-row layout on 0.050" (1.27 mm) pitch supporting wide parallel bus interfaces and mixed power-signal routing in a single SMT connector
- Gold-plated contacts with 1 A per pin current rating providing 88 A total capacity for power-dense mezzanine board interconnects
- Extended operating temperature range from -55°C to +125°C qualifying this connector for industrial, defense, and harsh outdoor deployments
- Surface-mount design compatible with standard reflow soldering for automated high-volume PCB assembly
Applications
The SFM-144-L2-FM-D-A-K is designed for very high pin-count board-to-board mezzanine interconnects in FPGA development boards, industrial computing backplanes, and military avionics electronics requiring 88 or more simultaneous signal and power paths. Its 0.050" pitch concentrates all connections in a minimal PCB area while the dual-row layout allows interleaving data bus, clock, power, and ground pins for optimized signal integrity. This connector is also used in high-density test fixture interfaces and multi-channel data acquisition chassis requiring reliable repeated mating.
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 is the total pin count and per-pin current rating of the SFM-144-L2-FM-D-A-K?
The SFM-144-L2-FM-D-A-K provides 88 total positions arranged in 2 rows of 44 pins each, with gold-plated contacts rated at 1 A per pin. This gives a combined current capacity of up to 88 A across all positions when power is distributed evenly, making it practical for mixed data bus and power rail mezzanine applications.
Which high-speed digital bus standards can be routed through the SFM-144-L2-FM-D-A-K on 0.050" pitch?
The 1.27 mm pitch and dual-row construction allow routing of 32-bit or 64-bit parallel buses, LVDS differential pairs, JTAG debug, I2C, SPI, and multiple independent power and ground pins within the 88-position footprint. At this pitch, inter-pin capacitance and crosstalk are low enough to support signal integrity up to several hundred megahertz per channel without special shielding.
How does the SFM-144-L2-FM-D-A-K serve defense or avionics electronics requiring wide temperature operation?
With a -55°C to +125°C operating range and gold-plated contacts, this connector meets the contact resistance and mechanical stability requirements of MIL-DTL-55302 class applications. The surface-mount footprint reflows cleanly with standard eutectic or lead-free solder alloys, and the 1.27 mm pitch allows conformal coating between pins for moisture and vibration protection required in avionics and shipboard electronic assemblies.
When should a designer choose the 88-pin SFM-144-L2-FM-D-A-K over a smaller 48-pin or 60-pin socket strip?
Designers select the 88-pin variant when the interface requires more than 64 data or address lines plus dedicated power, ground, and control signals all routed through a single connector. Consolidating 88 pins into one SMT connector instead of using two 44-pin or multiple smaller connectors reduces PCB routing congestion, eliminates inter-connector signal skew, and simplifies the mechanical mating alignment on stacked mezzanine PCBs.
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