SFM-128-T2-S-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-128-T2-S-D-A-K is a 56-position dual-row high-reliability socket strip with 0.050" pitch and surface-mount termination, featuring Tiger Eye contacts with gold plating for consistent low-resistance mating. Engineered for compact, high-density SMT board-to-board stacking applications. In stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- SFM-128-T2-S-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 56-position dual-row Tiger Eye socket on 0.050" (1.27 mm) pitch achieves high channel density per unit board length, reducing PCB area versus 0.100" pitch alternatives
- Surface-mount termination enables standard automated SMT reflow assembly without through-hole drilling, lowering PCB fabrication cost and simplifying production workflows
- Gold-plated Tiger Eye contacts deliver consistent wiping action and low contact resistance across many mating cycles, supporting high-reliability signal integrity in demanding applications
Applications
The SFM-128-T2-S-D-A-K is ideal for high-density SMT board stacking in embedded computing, industrial control modules, and telecommunications equipment requiring 56 signal channels in a minimal footprint. Its 0.050" pitch dual-row design efficiently routes digital, analog, and mixed-signal lines between stacked PCB assemblies. Gold-plated Tiger Eye contacts ensure reliable signal integrity in environments subject to thermal cycling and mechanical vibration.
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 total position count and pitch does SFM-128-T2-S-D-A-K offer, and how does this serve board-stacking designs?
The SFM-128-T2-S-D-A-K provides 56 positions in a dual-row layout on a 0.050" (1.27 mm) pitch. This configuration routes 56 independent signal or mixed-signal channels between stacked boards while occupying a footprint roughly half the length of a 0.100" connector with equivalent position count, benefiting space-critical embedded and telecommunications designs.
How do Tiger Eye contacts contribute to reliable performance in the SFM-128-T2-S-D-A-K?
Tiger Eye contacts generate a wiping motion as the mating connector is inserted, displacing surface oxides and contaminants from the contact interface. Combined with gold plating, this ensures low and repeatable contact resistance across the 56-position connector even after many mating cycles, which is critical in field-serviceable or frequently reconnected board assemblies.
Can SFM-128-T2-S-D-A-K be assembled using standard reflow soldering equipment?
Yes, the surface-mount termination on the SFM-128-T2-S-D-A-K is fully compatible with automated pick-and-place placement and lead-free reflow soldering. No through-hole drilling is required, which simplifies PCB layer stackup design and reduces board fabrication cost for the 56-position dual-row 0.050" pitch connector.
When would a designer choose SFM-128-T2-S-D-A-K over a lower-density 40- or 48-position SAMTEC SFM series socket?
A designer selects the 56-position SFM-128-T2-S-D-A-K when the interconnect interface requires 56 signal lanes, such as a parallel bus with data, address, control, and power lines combined. Choosing 56 positions over smaller variants like 40- or 48-position SFM series avoids adding a second connector, reducing cost, assembly complexity, and signal path length on the stacked board pair.
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