SFM-146-T2-LM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-146-T2-LM-D-A-K is a 92-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch and a top-mount surface mount configuration. Engineered for high-density mezzanine and board-to-board interconnect with gold-plated contacts for long mating cycle life. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 92
- Lifecycle
- ACTIVE
- Datasheet
- SFM-146-T2-LM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 92-position dual-row top-mount SMT configuration at 0.050" (1.27 mm) pitch for ultra-high-density board connections
- Gold-plated contacts rated for hundreds of mating cycles, ensuring reliability in repeated mate/unmate applications
- High-reliability construction suitable for telecommunications, aerospace, and high-speed digital system designs
Applications
The SFM-146-T2-LM-D-A-K is designed for mezzanine board-to-board stacking in high-speed digital systems, including FPGA daughtercard assemblies, network switch line cards, and modular instrumentation platforms. Its top-mount 0.050" pitch layout allows 92 signals to be routed across stacked boards in a minimal PCB area. The connector is also used in aerospace and defense electronics where high reliability and compact footprint are critical design requirements.
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 does the top-mount (T2) variant of the SFM-146-T2-LM-D-A-K differ from standard side-mount SFM connectors?
The T2 designation indicates a top-mount termination style where the solder tails are oriented vertically, perpendicular to the PCB surface, allowing the connector to sit flush in a top-mount pad pattern. This contrasts with side-mount (SM) variants where tails extend horizontally, affecting the PCB footprint orientation. For the 92-position dual-row 0.050" pitch body, top-mount placement reduces the keep-out zone on adjacent signal layers.
For a FPGA mezzanine card with 92 high-speed signals, does the SFM-146-T2-LM-D-A-K support differential pairs?
Yes, at 0.050" (1.27 mm) pitch and with gold-plated contacts, the SFM-146-T2-LM-D-A-K can support differential pair routing across its 46-per-row dual-row layout. Signal integrity up to several GHz per differential pair is achievable with careful PCB design, making this connector suitable for LVDS, SGMII, and JESD204B interfaces commonly used in FPGA mezzanine card designs.
What makes SFM-146-T2-LM-D-A-K suitable for high-reliability applications such as aerospace electronics?
The SFM-146-T2-LM-D-A-K features gold-plated contacts that resist oxidation and maintain low contact resistance below 20 milliohms over hundreds of mating cycles. SAMTEC's high-reliability SFM series undergoes rigorous testing including thermal shock from -55°C to +125°C and mechanical vibration screening, making these connectors appropriate for aerospace and defense system qualification programs.
When would a designer choose the SFM-146-T2-LM-D-A-K over an 0.100" pitch alternative for the same 92-position requirement?
The 0.050" pitch SFM-146-T2-LM-D-A-K occupies roughly half the board area of a comparable 0.100" pitch connector carrying the same 92 positions. Designers select the finer pitch when PCB space is limited, signal densities exceed 40 positions per inch of connector length, or when the mating board requires a matching 0.050" pitch header to minimize overall module dimensions in compact stacked card assemblies.
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