QTT-145-03-L-T SAMTEC Connector (Other) In Stock
SAMTEC QTT-145-03-L-T is a 135-position power plane terminal strip with 2.00 mm pitch and gold over nickel mating contacts on phosphor bronze construction, designed for high-density board stacking applications. The 3.565-inch body length and robust tin over nickel termination support reliable power and signal distribution across stacked PCB assemblies. Available from authorized distributors worldwide with competitive pricing and strong stock.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 135
- Lifecycle
- ACTIVE
- Datasheet
- QTT-145-03-L-T Datasheet PDF
- Category
- Connector
- Price
- From $18.6700(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-145-03-L-T?
- 135-position board stacking connector with 2.00 mm pitch and gold (10 µin) over nickel mating finish provides reliable low-resistance contact for power and signal distribution in multi-board assemblies
- Phosphor bronze contacts with tin over nickel barrier termination combine excellent spring-force retention with corrosion-resistant solder attachment for long service life in stacked PCB systems
- 3.565-inch body length accommodates wide parallel power plane connections in server backplanes, industrial computing modules, and high-current embedded systems
What is QTT-145-03-L-T used for?
The QTT-145-03-L-T is designed for board stacking interconnects in server computing modules, industrial control backplanes, and power distribution boards where 135 positions on a 2.00 mm pitch are needed to route power planes and high-density signal buses between stacked PCBs. Its gold over nickel mating contact finish ensures reliable low-contact-resistance connections under the repeated mating cycles typical of rack-mounted modular computing systems. The robust phosphor bronze construction and tin over nickel termination support the current-carrying requirements of multi-amp power rails distributed across stacked board assemblies.
What are the specifications of QTT-145-03-L-T?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Body Breadth | 0.236inch |
| Body Depth | 0.433inch |
| Body Length | 3.565inch |
| 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 | 135 |
| 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-145-03-L-T datasheet?
QTT-145-03-L-T Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for QTT-145-03-L-T?
Compatible alternatives and drop-in replacements for QTT-145-03-L-T:
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Board Stacking Connector, 135 Contact(s), 3 Row(s), Male, Straight, Solder Terminal, Black Insulator
Frequently Asked Questions
What position count and pitch does the QTT-145-03-L-T provide for board stacking interconnects?
The QTT-145-03-L-T provides 135 positions on a 2.00 mm pitch in a board stacking connector configuration with a body length of 3.565 inches and a depth of 0.433 inch. This combination allows routing of power planes and dense signal buses across stacked PCBs in server modules, industrial computing cards, and embedded systems requiring more than 100 interconnect points per connector.
What mating and termination contact finishes does the QTT-145-03-L-T use, and why are they chosen for power plane applications?
The QTT-145-03-L-T uses gold (10 µin) over nickel for the mating contacts and tin (Sn) over nickel (Ni) barrier for the PCB termination. The 10 µin gold mating finish provides consistent contact resistance below 20 mΩ for reliable power and signal transfer, while the nickel barrier on the termination side prevents copper migration that would otherwise degrade solder joint integrity in high-current power plane applications over a service life exceeding 5 years.
How does the QTT-145-03-L-T's 2.00 mm pitch compare to 0.100 inch pitch alternatives for high-current board stacking?
The 2.00 mm pitch of the QTT-145-03-L-T provides approximately 21% more spacing between contacts than the 1.27 mm equivalent, allowing each contact to carry higher current without excessive thermal buildup between adjacent pins in a 135-position power plane connector. This makes the 2.00 mm pitch format preferable for mixed power-and-signal stacking applications where some pins must carry 1 A or more continuously, compared to fine-pitch 0.050 inch connectors limited to signal-level currents below 500 mA per contact.
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Why Buy from FindMyChip
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+ | $27.9000 | $1395.00 |
| 100+ | $20.7400 | $2074.00 |
| 250+ | $18.6700 | $4667.50 |
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