QTT-142-03-S-T SAMTEC Connector (Other) In Stock
The SAMTEC QTT-142-03-S-T is a 126-position single-row 2.00 mm pitch power-plane terminal strip for board stacking applications, featuring gold-over-nickel mating contacts and phosphor bronze construction. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 126
- Lifecycle
- ACTIVE
- Datasheet
- QTT-142-03-S-T Datasheet PDF
- Category
- Connector
- Price
- From $28.4500(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-142-03-S-T?
- 126-position single-row layout on a 2.00 mm pitch with gold (30 µin) over nickel contact finish for low contact resistance and reliable mating in high-cycle board-stacking applications
- Phosphor bronze contact material delivers superior spring force retention and vibration resistance compared to brass, maintaining stable electrical connection in demanding industrial environments
- Power-plane terminal strip design supports mixed signal and power routing in board-to-board stacking configurations up to the connector's rated voltage and current capacity
What is QTT-142-03-S-T used for?
The QTT-142-03-S-T is designed for board-stacking applications in industrial control systems, server backplanes, and telecom switching cards where a high-density 126-position 2.00 mm pitch terminal strip must carry both power-plane and signal connections between stacked PCBs. Its gold-plated mating contacts and phosphor bronze construction also make it suitable for ruggedized embedded computing modules and defence electronics where consistent contact integrity across wide temperature ranges and vibration environments is required.
What are the specifications of QTT-142-03-S-T?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Body Breadth | 0.236inch |
| Body Depth | 0.433inch |
| Body Length | 3.328inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (30) 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 | 30u inch |
| Reference Standard | UL |
| Terminal Length | 0.09inch |
| Terminal Pitch | 2mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 126 |
| 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-142-03-S-T datasheet?
QTT-142-03-S-T Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for QTT-142-03-S-T?
Compatible alternatives and drop-in replacements for QTT-142-03-S-T:
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 126 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Frequently Asked Questions
How many positions does the QTT-142-03-S-T have, and what is its contact pitch?
The QTT-142-03-S-T is a 126-position single-row terminal strip with a 2.00 mm pitch. At this pitch, the strip spans approximately 3.33 inches (84.6 mm) in body length, making it one of the longer high-count SAMTEC QTT-series strips available for power-plane and mixed-signal board stacking.
What contact material and plating does the QTT-142-03-S-T use, and why does it matter for reliability?
The QTT-142-03-S-T uses phosphor bronze contacts with 30 µin gold over nickel plating on the mating surfaces and tin over nickel on the termination tails. Phosphor bronze provides high spring-back force that maintains contact pressure over thousands of mating cycles, while the gold mating finish ensures stable, low-resistance electrical connections even in environments with light oxidation or humidity.
For a multi-board server backplane design, how does the QTT-142-03-S-T's power-plane rating support power distribution?
As a power-plane terminal strip, the QTT-142-03-S-T is designed to route power rails between stacked boards alongside signal lines. SAMTEC QTT-series connectors are typically rated for working voltages up to 250 V AC and per-pin current capacities suitable for distributing regulated supply rails across 126 positions, reducing the number of separate power connectors needed in backplane designs.
In a harsh-environment embedded computing module, what mechanical advantages does the QTT-142-03-S-T offer over lower-grade terminal strips?
The QTT-142-03-S-T's phosphor bronze contacts resist stress relaxation and maintain spring force over wide temperature swings from -55°C to +125°C, while the nickel barrier under the gold plating prevents diffusion and corrosion. Combined with its board-stacking connector classification and robust 2.00 mm pitch, it outperforms standard brass-contact alternatives in vibration-prone military, aerospace, and industrial automation environments.
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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+ | $41.3000 | $2065.00 |
| 100+ | $32.0100 | $3201.00 |
| 250+ | $28.4500 | $7112.50 |
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