SEAF-20-06.5-S-08-2-A-K-TR SAMTEC Connector (Other) In Stock
The SAMTEC SEAF-20-06.5-S-08-2-A-K-TR is a 40-position board-stacking socket connector with 6.5 mm stack height, 0.8 mm pitch, and a polarization post for keyed mating. Its 1.229 x 0.421 inch body with RoHS-compliant construction supports reliable high-density board-to-board interconnections. Ideal for embedded computing modules, FMC FPGA mezzanine cards, and industrial SoM carrier board designs requiring compact, high-cycle stacking interfaces.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 160
- Lifecycle
- ACTIVE
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40-position board stacking socket on 0.8 mm pitch with 6.5 mm stack height for high-density mezzanine applications
- Polarization post (K option) prevents mis-orientation during board stacking assembly
- RoHS-compliant construction with tape-and-reel packaging for automated high-volume PCB assembly
- 1.229 x 0.421 inch compact footprint enables tight board-to-board spacing in multi-layer embedded module stacks
Applications
The SEAF-20-06.5-S-08-2-A-K-TR is used on FPGA mezzanine card (FMC) carrier boards, System-on-Module (SoM) carrier boards, and high-speed embedded computing platforms where a 6.5 mm board stack height and 0.8 mm pitch are required for signal integrity across the board-to-board interface. The polarization post ensures correct module orientation during field swaps and manufacturing assembly. Its RoHS-compliant design suits medical equipment, aerospace test systems, and industrial edge computing modules.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 1 Week, 1 Day |
| YTEOL | 8.75 |
| Additional Feature | ROHS COMPLIANT |
| Board Mounting Option | POLARIZATION POST |
| Body Breadth | 0.421inch |
| Body Depth | 0.258inch |
| Body Length | 1.229inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (30) OVER NICKEL (50) |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | COPPER ALLOY |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 7mΩ |
| Contact Style | BELLOWED TYPE |
| DIN Conformance | NO |
| Dielectric Withstanding Voltage | 900VAC V |
| Durability | 100Cycles |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insertion Force-Max | LIF N |
| Insulation Resistance | 25000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 8 |
| Number of Rows Loaded | 8 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 1.27mm |
| Plating Thickness | 30u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 2.7A |
| Reference Standard | UL |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 160 |
| Withdrawl Force-Min | LIF N |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Costa Rica, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What stack height and pitch does the SEAF-20-06.5-S-08-2-A-K-TR provide, and which mezzanine card standards does that support?
The SEAF-20-06.5-S-08-2-A-K-TR provides a 6.5 mm board-to-board stack height on a 0.8 mm contact pitch. This stack height is compatible with the VITA 57.1 FMC (FPGA Mezzanine Card) standard, where 8 mm and 6.5 mm heights are common options. The 0.8 mm pitch supports high-density differential signal routing for multi-gigabit interfaces such as PCIe and JESD204B.
How does the polarization post (K option) on the SEAF-20-06.5-S-08-2-A-K-TR prevent assembly errors in board stacking?
The -K option adds a mechanical polarization post that mates with a corresponding notch or hole in the plug connector. This physically blocks incorrect 180-degree rotation of the mezzanine board during assembly, preventing contact damage on the 40-position 0.8 mm pitch array. It is especially valuable on automated pick-and-place lines processing boards with symmetric-looking connectors where visual inspection alone would miss mis-orientation.
What are the body dimensions of the SEAF-20-06.5-S-08-2-A-K-TR and how do they fit within a standard FMC module footprint?
The body measures 1.229 inches (31.2 mm) in length and 0.421 inches (10.7 mm) in width, with a 0.258 inch (6.5 mm) mated height. These dimensions fit within the VITA 57.1 FMC module boundary, which reserves a defined area for the stacking connector pair, leaving adjacent PCB space for decoupling capacitors and signal escape routing from the 0.8 mm pitch contacts.
For which automated assembly workflows is the tape-and-reel (TR) packaging of the SEAF-20-06.5-S-08-2-A-K-TR most beneficial?
The -TR suffix indicates tape-and-reel packaging on a carrier compatible with standard pick-and-place nozzles, typically supporting feeders for connectors with a body up to 32 mm in length. This enables automated SMT placement on high-volume or mixed-technology PCB lines at rates exceeding 1000 placements per hour, eliminating manual connector loading steps that would be required with tray or tube packaging.
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