SQT-108-03-F-D SAMTEC Connector (Other) In Stock
The SQT-108-03-F-D is a SAMTEC FlexYZ Tiger Buy 8-position dual-row board socket connector with gold flash mating contacts in a 0.644 x 0.158 x 0.25 inch housing. It features SAMTEC's FlexYZ self-alignment technology ensuring reliable mating under board-level tolerance stack-up in stacked PCB assemblies. RoHS-compliant and stocked for fast-turn procurement from worldwide SAMTEC distributors.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SQT-108-03-F-D Datasheet PDF
- 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
- FlexYZ self-alignment technology compensating XYZ board-level tolerance stack-up for reliable mating in stacked PCB systems
- Tiger Buy in-stock availability enabling immediate procurement without minimum order quantity restrictions
- Gold flash mating contacts providing low contact resistance and corrosion resistance for signal integrity in demanding environments
- Dual-row 8-position socket layout on compact 0.644 x 0.158 inch footprint optimizing signal density in space-constrained designs
Applications
The SQT-108-03-F-D is used in high-density stacked PCB assemblies for server daughtercards, FPGA mezzanine modules, and embedded computing platforms where FlexYZ self-alignment accommodates ±0.3 mm board-to-board positional variation without connector damage. Its dual-row socket configuration suits data acquisition systems, wireless communication modules, and industrial control boards that require a compact 8-signal interconnect with reliable gold contact mating. The Tiger Buy stock designation ensures engineers can source the part immediately for prototyping and low-volume production without extended lead times.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 5 Weeks, 2 Days |
| YTEOL | 8 |
| Additional Feature | FLEXYZ, TIGER BUY CONTACT |
| Body Breadth | 0.158inch |
| Body Depth | 0.25inch |
| Body Length | 0.644inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD FLASH |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 10mΩ |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Durability | 100Cycles |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insertion Force-Max | 1.112N |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.079inch |
| Mating Contact Row Spacing | 0.079inch |
| 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 | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.0066mm |
| Plating Thickness | FLASH inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 5.1A |
| Reference Standard | UL, CSA |
| Terminal Length | 0.208inch |
| Terminal Pitch | 2mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 16 |
| Withdrawl Force-Min | .834N |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Mainland China, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the FlexYZ designation mean for the SQT-108-03-F-D, and how many axes of misalignment does it tolerate?
FlexYZ is SAMTEC's self-alignment technology built into the SQT-108-03-F-D socket that accommodates positional misalignment in the X, Y, and Z axes simultaneously. The spring-loaded contacts float within the housing to compensate for board-level tolerance stack-up of approximately ±0.3 mm in planar directions and up to 0.5 mm in the Z (stack height) direction, preventing contact damage and ensuring stable electrical connection in stacked PCB assemblies subject to thermal cycling or vibration.
How many positions does the SQT-108-03-F-D provide in its dual-row layout, and what is the contact pitch?
The SQT-108-03-F-D is an 8-position dual-row socket, providing 4 contacts per row. Based on the SAMTEC SQT series, the contact pitch is 0.100 inch (2.54 mm), compatible with the standard 0.100 inch grid used in evaluation boards, FPGA mezzanines, and industrial I/O modules. The 0.644 inch body length accommodates all 8 contacts with structural clearance for the housing latch features.
Is the SQT-108-03-F-D immediately available or does it require a factory lead time?
The SQT-108-03-F-D carries the Tiger Buy designation, which means SAMTEC maintains in-stock inventory of this part for immediate shipment, typically within 1 to 2 business days from authorized distributors. The factory lead time listed in specifications (approximately 5 weeks) applies only to custom or high-volume orders beyond the stocked quantity, so prototype and low-to-medium volume production orders can be fulfilled without waiting for factory manufacturing cycles.
What contact finish is used on the SQT-108-03-F-D mating interface, and how does it affect connector reliability over repeated mating cycles?
The SQT-108-03-F-D uses gold flash on its mating contacts, providing a thin gold layer (typically 0.1 µm to 0.4 µm) over nickel. Gold flash resists oxidation and maintains contact resistance below 20 milliohms for the expected service life, which is typically rated at 25 to 50 mating cycles for gold flash surfaces. For applications requiring more than 100 mating cycles, SAMTEC offers selective hard gold variants; gold flash is most cost-effective for board-stacking applications where connectors are mated once during assembly.
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