QA2541: 2.54mm Pitch Automotive TPA or ISL Connector
Product Features
QA2541 series (TE-MQS Automotive Connector)
The QA2541 series (TE-MQS Automotive Connector) achieves three core performance improvements: high packaging density, high current-carrying capacity, and safe operation, through structural optimization, material upgrades, and process innovation.
Features a staggered high-density terminal array, suitable for space-constrained applications and automated assembly.
Equipped with multiple protection structures against mis-insertion, electric shock, and loosening.


Housing is made of flame-retardant engineering plastic for enhanced safety.
Compatible with AC and DC transmission, vibration-resistant, and designed for long service life.
Complies with IATF 16949 standards and is UL and CE certified, meeting the requirements of high-end automotive applications.
Product Specification
|
Spacing |
Rated current |
Rated voltage |
Insulation resistance |
Contact resistance |
Withstanding voltage |
Temperature range |
Wire range |
|
2.54mm |
4A/7.5A AC/DC |
250V AC/DC |
≥100ΜΩ |
≤30mΩ |
500V AC/minute |
-40℃~ +130℃ |
AWG#20~22 |
|
Product Name |
Part No. |
Material |
Poles |
QTY |
|
Housing |
QA2541Y-xx |
PBT UL94V-0 |
2*4 |
1000Pcs/Bag |
|
TPA |
QA2541PS-xx |
PBT UL94V-0 |
2*4 |
1000Pcs/Bag |
|
Terminal |
QA2541T-xx |
Phosphor Bronze |
-- |
5000Pcs/Reel |
Applicable Standards
Automotive industry standards, USCAR 2.0, QC/T 1067-2017, and other relevant automotive standards.
Application Scenarios
The QA2541 connector system is vibration-resistant, impact-resistant, and structurally stable, designed for harsh, high-vibration, and high-stress automotive environments. Its high packaging density, current-carrying capacity, and multiple safety features ensure stable connections under complex loads, supporting critical circuits in commercial vehicles, special-purpose vehicles, and passenger cars.
I. Commercial Vehicle Core Power and Chassis Systems: Commercial vehicles experience higher mechanical stress than passenger cars due to complex road conditions. The QA2541 is ideal for critical circuits in engine compartments, chassis and suspension systems, and on-board auxiliary systems.
II. New Energy Vehicle Power and Energy Storage Systems: Handles the heavy loads from battery packs, motor controllers, and charging circuits, meeting the connection requirements of powertrain and electronic control systems.
III. Special-Purpose Motor Vehicles: Designed for harsh environments of engineering vehicles, off-road vehicles, and other specialty vehicles, meeting demanding connection requirements.
IV. High-Performance and Modified Passenger Vehicles: Supports high-vibration and mechanical stress scenarios in sports cars, off-road SUVs, and modified vehicles, especially after powertrain reinforcement or suspension upgrades.
Summary: Through structural and performance optimization, the QA2541 covers high-vibration and high-stress automotive scenarios, supports multiple power and space requirements, complies with IATF 16949, and is UL and CE certified, providing a robust and reliable connection solution.

Production Site
Guided by IATF 16949 standards, the core production base features a fully automated layout:
Injection molding workshop
High-precision equipment and flame-retardant materials ensure temperature resistance and impact resistance of components.
Stamping workshop
Processes copper terminals with precision molds, strictly controlling dimensional tolerances.
Assembly workshop
Automated production lines integrate CCD inspection modules for assembly and testing, ensuring consistent product quality and efficiency.

Packaging & Transportation
Industrial-grade standardized packaging is used:
Products packed in cartons with cushioning pads and secured on pallets for forklift handling.
Storage: Retain original packaging in a clean, dry warehouse at 0–30℃ and 30–60% RH.
Transportation: Road, international express, air, and sea freight. Protect against sharp objects and severe impacts. Recycle packaging materials.

Double Technical Guarantee: Certification + Patents
The QA2541 has obtained multiple authoritative certifications, including IATF 16949, ISO 9001, and ISO 14001, covering production, management, and service. Multiple utility model patents related to connector structure optimization and process innovation provide strong support for product compliance, quality stability, and market competitiveness.


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