QTT-148-03-G-T SAMTEC Connector (Other) In Stock
SAMTEC QTT-148-03-G-T is a 144-position, 2.00 mm pitch power-plane board-stacking terminal strip with phosphor bronze male contacts finished in gold over nickel. Measuring 3.802 inches long, it delivers high-current, low-resistance power distribution across stacked PCB assemblies in demanding applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 144
- Lifecycle
- ACTIVE
- Datasheet
- QTT-148-03-G-T Datasheet PDF
- Category
- Connector
- Price
- From $25.0100(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-148-03-G-T?
- 144-position 2.00 mm pitch power-plane board-stacking connector with 3.802-inch body length for high-density power and signal distribution
- Phosphor bronze male contacts with 20 µin gold over nickel finish on mating surfaces for low-resistance, corrosion-resistant connections
- Board-stacking architecture enables reliable power-plane connectivity between stacked PCBs in server, storage, and industrial computing systems
What is QTT-148-03-G-T used for?
The QTT-148-03-G-T is engineered for server backplane assemblies, high-performance computing modules, and industrial rack systems where 144 positions of power and signal must bridge two stacked PCBs at 2.00 mm pitch. Its gold-plated phosphor bronze contacts support repeated mating cycles with low and consistent contact resistance, making it suitable for field-serviceable blade server and modular storage architectures. The extended 3.802-inch body distributes current uniformly across the power plane to minimize resistive heating in high-current environments.
What are the specifications of QTT-148-03-G-T?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Body Breadth | 0.236inch |
| Body Depth | 0.433inch |
| Body Length | 3.802inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (20) OVER NICKEL |
| Contact Finish Termination | Gold (Au) - 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 | e4 |
| 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 | 20u inch |
| Reference Standard | UL |
| Terminal Length | 0.09inch |
| Terminal Pitch | 2mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 144 |
| 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-148-03-G-T datasheet?
QTT-148-03-G-T Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for QTT-148-03-G-T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions does the QTT-148-03-G-T provide, and at what pitch are the contacts spaced?
The QTT-148-03-G-T features 144 positions at a 2.00 mm pitch, yielding a total body length of 3.802 inches. This large contact count and 2.00 mm pitch combination supports simultaneous power and signal routing in high-density board-stacking applications such as server blades and industrial compute modules.
What contact material and finish does the QTT-148-03-G-T use, and why is this important for high-cycle-count applications?
The QTT-148-03-G-T uses phosphor bronze contacts with a 20 µin gold over nickel barrier finish on mating surfaces and a gold over nickel finish on terminations. Phosphor bronze provides the spring-back force needed to maintain reliable contact pressure after hundreds of mating cycles, while the gold finish resists oxidation and keeps contact resistance low in high-cycle server and instrumentation applications.
In a server backplane design, what advantage does the QTT-148-03-G-T offer over a series of smaller connectors to achieve the same 144-position count?
Using a single QTT-148-03-G-T instead of multiple smaller connectors eliminates inter-connector gaps in the power plane, providing a continuous 3.802-inch current path at 2.00 mm pitch that reduces inductance and resistive losses at high currents. A consolidated 144-position connector also simplifies alignment during blade insertion and decreases the number of solder joints, lowering assembly defect rates and improving long-term reliability in 1U and 2U rack server backplanes.
Related Guides
TLMG1100-GS08 Indicator LED PCB Design and Validation Guide
Design and validate a TLMG1100-GS08 indicator PCB with current calculations, GPIO checks, polarity review, and enclosure tests.
Nov 7, 2026
How to Choose RK73H1ETTP1002F: Chip Resistor Selection Guide 2026
Select RK73H1ETTP1002F for 10 kΩ circuits: compare four catalog options, check power and package limits, and prepare an exact-part sourcing request.
Nov 7, 2026
ECA1JHG220: 22 µF, 63 V Electrolytic Capacitor Selection Guide
Choose ECA1JHG220 using voltage, tolerance, ripple, temperature and fit checks, with four Panasonic catalog candidates compared.
Nov 6, 2026
How to Choose an Indicator LED: TLMG1100-GS08 Selection Guide
Select TLMG1100-GS08 and evaluate four indicator LED candidates through optical, electrical, footprint, and sourcing checks.
Nov 5, 2026
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+ | $35.8400 | $1792.00 |
| 100+ | $27.7800 | $2778.00 |
| 250+ | $25.0100 | $6252.50 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
10214-6212PC
3M
Connector
1778573
Phoenix Contact
Connector
5227222-3
TE Connectivity
Connector
S4B-XH-SM4-TB(LF)(SN)
JST (JAPAN SOLDERLESS TERMINALS)
Connector
185226-2
TE Connectivity
Connector
0533980571
Molex
Connector
0360-0-15-01-34-27-10-0
Mill-Max
Connector
7850-0006PR
3M
Connector
AVB 1,5/2/12
BLOCK
Connector
N3764-5002RB
3M
Connector
N3627-6002RB
3M
Connector
N3627-5002RB
3M
Connector
N3440-6002RB
3M
Connector
929715-03-36-I
3M
Connector
929667-02-36-I
3M
Connector
929665-04-36-I
3M
Connector
929665-02-36-I
3M
Connector
929647-04-36-I
3M
Connector
929647-03-36-I
3M
Connector
7834-0006PR
3M
Connector
7826-0006PR
3M
Connector
7820-0006PR
3M
Connector
3440-5002
3M
Connector
3433-5302
3M
Connector