SEM-128-02-03.0-H-D SAMTEC Connector (Other) In Stock
The SAMTEC SEM-128-02-03.0-H-D is a 56-position, dual-row Micro Tiger Eye socket strip with 0.80 mm pitch designed for high-density surface-mount board-to-board interconnect applications. Micro Tiger Eye contacts deliver reliable wiping action and low insertion force. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- SEM-128-02-03.0-H-D Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 56-position dual-row surface-mount socket strip at 0.80 mm pitch enables very high contact density in compact board-to-board interconnects
- Micro Tiger Eye contact technology provides reliable multi-point wiping contact for low insertion force and long mating cycle life
- 3.0 mm stack height option supports precise board-to-board spacing in stacked PCB assemblies
- Dual-row configuration maximizes signal count per unit length, reducing connector footprint versus equivalent single-row designs
Applications
The SEM-128-02-03.0-H-D is designed for high-density board-to-board connections in advanced embedded systems, small form-factor computing modules, and telecommunications equipment requiring reliable 0.80 mm pitch socket interfaces. Its 56-position dual-row layout supports dense signal routing between stacked PCBs at a controlled 3.0 mm board-to-board spacing. The Micro Tiger Eye contact design ensures consistent electrical performance across multiple mating cycles in industrial and instrumentation environments.
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 pitch and position count does the SEM-128-02-03.0-H-D provide for board-to-board connections?
The SEM-128-02-03.0-H-D is a 56-position dual-row socket strip with 0.80 mm pitch. This fine pitch allows a very high contact density, fitting 56 connections into a footprint roughly equivalent to a 28-position 1.0 mm pitch connector, saving significant PCB area in compact embedded computing and communication designs.
What does the 3.0 mm dimension in SEM-128-02-03.0-H-D indicate for stacked PCB assemblies?
The 3.0 mm specification refers to the board-to-board stack height, meaning the two mated PCBs will be separated by 3.0 mm when this socket is mated with its corresponding pin header. This precise spacing is critical for stacked module designs where clearance for components on both boards must be carefully controlled.
What is the Micro Tiger Eye contact technology in SAMTEC SEM series and why does it matter?
Micro Tiger Eye is SAMTEC's proprietary contact geometry that creates multiple wiping contact points during mating, improving contact reliability and reducing the effect of surface contamination. This results in stable contact resistance well below 50 mΩ and supports higher mating cycle counts compared to simple beam contacts, which is important in systems that require frequent board removal and reinstallation.
In which applications is the SEM-128-02-03.0-H-D connector most commonly used?
This connector is most commonly used in high-density stacked PCB assemblies such as COM Express modules, FPGA mezzanine cards, and SBC daughter boards requiring 56 reliable signal connections at 0.80 mm pitch. The 3.0 mm stack height accommodates SMD components up to approximately 2.5 mm tall on the PCB facing the socket side of the assembly.
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