QTT-143-03-L-T SAMTEC Connector (Other) In Stock
SAMTEC QTT-143-03-L-T is a 129-position, 2.00 mm pitch power plane terminal strip designed for board stacking with gold-over-nickel mating contacts. Features phosphor bronze contacts with tin-nickel termination, a 3.407-inch body length, and reliable high-current plane connectivity. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 129
- Lifecycle
- ACTIVE
- Datasheet
- QTT-143-03-L-T Datasheet PDF
- Category
- Connector
- Price
- From $17.8400(MOQ 50)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of QTT-143-03-L-T?
- 129 positions at 2.00 mm pitch providing high-density power and signal distribution across a 3.407 inch body length
- Gold (10 µin) over nickel mating contacts on phosphor bronze base for low-resistance, high-cycle-life connections
- Board stacking connector design enables stable mechanical and electrical connections between parallel PCB layers
- Tin over nickel termination finish on solder tails ensures reliable solderability in automated reflow processes
What is QTT-143-03-L-T used for?
The QTT-143-03-L-T is designed for board stacking power plane applications in server backplanes, industrial computing modules, and high-current power distribution systems where 129 contact positions are required at a 2.00 mm pitch. Its gold-mated phosphor bronze contacts support reliable current handling across multiple stacked PCB layers in rack-mounted equipment and embedded systems. The connector is well-suited for telecom infrastructure and data center hardware that demand long-term interconnect reliability.
What are the specifications of QTT-143-03-L-T?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Body Breadth | 0.236inch |
| Body Depth | 0.433inch |
| Body Length | 3.407inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (10) OVER NICKEL |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number of Rows Loaded | 3 |
| Option | GENERAL PURPOSE |
| Plating Thickness | 10u inch |
| Reference Standard | UL |
| Terminal Length | 0.09inch |
| Terminal Pitch | 2mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 129 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
Where can I find the QTT-143-03-L-T datasheet?
QTT-143-03-L-T Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for QTT-143-03-L-T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many contact positions does the QTT-143-03-L-T provide and what is its pitch?
The QTT-143-03-L-T provides 129 contact positions at a 2.00 mm pitch, housed in a 3.407-inch body length. This high contact count makes it suitable for power plane distribution across stacked PCBs in server backplanes, industrial computers, and data center switching equipment that require simultaneous power and signal routing through a single interconnect.
What contact finish does the QTT-143-03-L-T use and how does it affect mating durability?
The mating contacts are finished with 10 microinches of gold over nickel on a phosphor bronze base material, providing low and stable contact resistance across hundreds of mating cycles. The gold finish resists oxidation and fretting corrosion, maintaining reliable electrical connections in environments exposed to vibration or repeated board removal, such as field-replaceable server modules or test fixtures.
Which board stacking system applications best match the QTT-143-03-L-T connector?
The QTT-143-03-L-T is best matched to applications requiring high pin-count board stacking at 2.00 mm pitch, including server compute blades, industrial motion controllers, and telecom line cards. Its 129-position capacity supports simultaneous routing of power planes and high-speed differential signals across parallel PCB layers, reducing cabling complexity in rack systems with 1U to 4U form factors.
What termination finish is used on the solder tails of QTT-143-03-L-T and is it compatible with lead-free assembly?
The termination tails use tin (Sn) with a nickel (Ni) barrier, which is fully compatible with lead-free reflow soldering at peak temperatures up to 260°C per JEDEC J-STD-020. The nickel barrier prevents tin whisker growth and solder joint embrittlement, making the QTT-143-03-L-T compliant with RoHS and suitable for modern lead-free SMT manufacturing processes.
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About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 50+ | $26.6600 | $1333.00 |
| 100+ | $19.8100 | $1981.00 |
| 250+ | $17.8400 | $4460.00 |
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