SFM-123-T2-FM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-123-T2-FM-D-A-K is a 46-position dual-row surface mount socket strip with 0.050" (1.27 mm) pitch designed for high-reliability mezzanine board connections. Gold-plated contacts and precision housing ensure stable signal integrity over repeated mating cycles. Globally available with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- SFM-123-T2-FM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 46-position dual-row socket strip at 0.050" (1.27 mm) pitch for high-density SMT mezzanine interconnects
- Gold-plated contacts providing low contact resistance and reliable performance over 30+ mating cycles
- Surface mount footprint compatible with standard reflow soldering at up to 260°C for automated assembly
Applications
The SFM-123-T2-FM-D-A-K is designed for mezzanine and daughter-card interconnects in telecommunications, industrial automation, and embedded computing platforms requiring 46-signal high-density connections. Its 0.050" pitch accommodates parallel bus architectures in FPGA evaluation boards and multi-channel analog front-end modules. The connector is also used in compact military electronics and avionics systems where board space is critical and connector reliability must be maintained across extreme temperature 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 positions does the SFM-123-T2-FM-D-A-K provide and at what pitch?
The SFM-123-T2-FM-D-A-K offers 46 positions in a dual-row arrangement with a 0.050" (1.27 mm) pitch. This high-density layout allows 46 signal connections in roughly half the board length needed by a comparable 0.100" pitch connector, making it ideal for compact mezzanine designs.
For which FPGA daughter-card designs does the SFM-123-T2-FM-D-A-K provide the best fit?
FPGA FMC (FPGA Mezzanine Card) and custom daughter-card designs with 32 to 46 signal lanes benefit most, as the 0.050" pitch accommodates parallel 32-bit buses plus power and ground at 46 total positions. The gold-plated contacts support signal frequencies up to several hundred MHz while maintaining impedance continuity across the mating interface.
What differentiates the FM termination style in SFM-123-T2-FM-D-A-K from standard SMT tails?
The FM (flat mount) termination places solder tails flush against the PCB surface in a coplanar arrangement, reducing total connector height by approximately 0.3 mm compared to J-bend SMT tails. This ultra-low-profile mounting is critical for stackup-sensitive designs where the gap between mezzanine boards is less than 4 mm, such as compact server blades and ruggedized military electronics.
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