Headers For Pcb

QA3004: 3.0 mm Pin Header Series

QA3004 Series

The QA3004 series comprises 3.0 mm standard-pitch dual-row pin headers. Featuring a dual-row pin layout, it enables more connection points within the same space, balancing universal pitch compatibility with high-density wiring requirements. It offers a cost-effective solution for board-to-board interconnections and multi-channel signal/power transmission.

• 3.0mm standard dual-row pitch: An industry-standard specification; the dual-row design enhances connection density and is suitable for multi-channel circuit interconnection
• Precision copper dual-row pins: One-piece moulded from high-purity copper, with tin-plated or gold-plated finishes for oxidation resistance, low impedance and long-term conductive stability
• Integrally moulded flame-retardant base: Heat-resistant and deformation-resistant, suitable for reflow soldering processes, providing safe insulation and offering durability and resistance to ageing
• Sturdy structure with secure interlocking: The dual-row layout ensures even stress distribution, providing shock resistance and preventing loosening; withstands repeated insertion and removal without deformation or detachment
• Flexible customisation options: Supports straight or angled pins and various pin counts, suitable for a wide range of PCB layouts and installation scenarios

Widely used in industrial control motherboards, communication modules, home appliance control boards, security equipment, smart instruments, power supply control boards and other scenarios requiring multi-channel signals and high-density inter-board connections.

Jiankun's production process adheres to professional quality control standards for electronics manufacturing and is divided into three core stages: front-end manufacturing, mid-end manufacturing and quality control, and back-end warehousing and delivery, as detailed below:

Front-end Process: Component Forming
1. Terminal Stamping and Forming
Using high-purity copper strip as raw material, high-speed precision stamping equipment is employed to cold-form terminal blanks. The structural precision and mechanical strength of the terminals are strictly controlled, laying the foundation for subsequent electrical connection performance.
2. Terminal Electroplating
Surface treatments such as gold plating, tin plating and nickel plating are carried out by qualified external suppliers. This enhances the terminals' conductivity, oxidation resistance and insertion/withdrawal durability, whilst meeting industry environmental and reliability requirements such as RoHS and REACH.
3. Injection Moulding of Plastic Housings
Engineering plastic pellets (such as PA66 and LCP) are melted at high temperature using precision injection moulding machines and injected into moulds to form the connector housing, ensuring dimensional stability, insulation performance and temperature resistance.
 

Mid-stage Processes and Quality Control
1. Automated Assembly
High-speed insertion equipment is used to precisely insert and lock the electroplated terminals into the injection-moulded housing, thereby forming the connector's electrical connection structure. The entire process is monitored by a vision positioning system to ensure assembly accuracy.
2. CCD Visual Inspection
A high-resolution CCD vision inspection system is utilised to perform automated inspection and yield screening for connector cosmetic defects (such as terminal deformation or flash on the plastic housing) and dimensional accuracy (such as terminal alignment deviation), with a detection accuracy of up to ±0.01 mm.
3. Tape and Reel Packaging
Qualified products are packaged using carrier tape and cover tape to meet the SMT automated placement process requirements of downstream customers, whilst preventing damage during transport and storage.
4. Final 100% Inspection
Through a combined 'manual visual inspection + electrical performance testing' process, we verify core electrical parameters of the connectors, including electrical continuity, withstand voltage and insulation resistance, to ensure products comply with industry quality system requirements such as IATF 16949.
 

Back-end Warehousing and Delivery
1. Batch-based Inbound Management
Qualified products are scanned into stock via the WMS (Warehouse Management System), enabling production batch traceability, real-time inventory control and First-In, First-Out (FIFO) management.
2. Order Fulfilment and Dispatch
Picking and preparation are carried out in accordance with customer order requirements, with dispatch arranged via the logistics system. Batch traceability reports and Certificate of Conformity (COC) are provided throughout the process to guarantee delivery timeliness and quality traceability.

Jiankun Connectors' core production base operates in accordance with the IATF 16949 automotive quality management system, combined with the ISO 9001 general quality standard. Focusing on the performance requirements of compact product design and highly reliable connections, it has established a fully autonomous production chain covering the entire process from "raw material processing – component forming – finished product assembly – quality inspection". Through specialised workshop zoning, precise division of labour and the use of intelligent equipment, the company ensures controllable quality and efficiency at every stage, providing robust hardware support for high-end applications across the automotive, medical and digital sectors.

Injection Moulding Workshop: High-precision automated moulding, laying a solid foundation for the quality of micro-structural components
As the core operational unit of the "injection moulding raw materials division", the injection moulding workshop focuses on the precision moulding of plastic structural components such as connector micro-housings and internal latches. Throughout the process, it aligns with the design requirements for compactness and high rigidity:

• Equipment and Process Control
• Process Quality Verification
   

Stamping Workshop: Precision Copper Strip Processing, Empowering the Core Performance of Micro Terminals
As the key processing area within the "copper strip raw materials division", the Stamping Workshop specialises in the precision stamping of micro-terminals, providing the core substrate to ensure the electrical performance of low contact resistance and high connection stability:

• Equipment and Raw Material Configuration
• Process Coordination Assurance
   

Assembly Workshops I & II: Automated Integrated Assembly, Achieving Closed-Loop Process Quality Control
Assembly Workshops I and II focus on core assembly processes. Through the deployment of multiple intelligent automated production lines, they receive qualified components from the stamping and injection moulding processes to complete core procedures such as terminal crimping and component integration, whilst simultaneously ensuring precise verification throughout the assembly process:

• Automated Precision Assembly
• Integrated In-Line Inspection
   

End-to-End Autonomous Production Layout: Dual Assurance of Efficiency and Quality

The facility centres on an end-to-end autonomous production layout, breaking down barriers across all stages from raw material processing and component forming to finished product assembly. Through a digital management system, all workshops share production data, enabling precise traceability of raw material batches, equipment parameters and inspection data for every batch.This integrated layout not only shortens production cycles to meet the bulk delivery requirements of clients across multiple sectors, but also establishes a fully controllable quality management system through standardised processes and comprehensive, end-to-end inspection.

1. Standardised Packaging Design
JKUN adopts industry-standardised packaging solutions. Products are neatly packed into dedicated cartons according to their specifications and, once packed, are uniformly secured onto pallets. This ensures products are stacked neatly and is compatible with forklift handling procedures, significantly enhancing the efficiency of warehousing and transit operations.
 

2. Storage Requirements
Products must be stored in their original, undamaged packaging at all times, and should be kept in a clean, dry warehouse. We recommend prioritising areas that are protected from light, with minimal temperature and humidity fluctuations and low humidity levels. Additionally, care must be taken to avoid external pressure or impact on the packaging to prevent damage that could affect product performance.
 

3. Flexible Transport Options
To meet diverse order requirements and logistics coverage, a variety of transport methods are available, including full-load road transport (lorries), international courier services (such as UPS, TNT, FedEx, EMS and DHL), air freight and sea freight, which can be flexibly adapted to suit specific circumstances.
 

4. Transport and Handling Precautions

• During transport, particular care must be taken to prevent the packaging from coming into contact with sharp objects and to avoid violent impacts, thereby preventing damage to the packaging which could affect product quality;
• Under normal transport and standard operating conditions, this product does not pose any undue health risks; however, safety during loading and unloading must be prioritised to prevent non-compliant operations;
• Packaging materials must be disposed of properly; indiscriminate disposal is strictly prohibited, and both environmental requirements and operational standards must be observed.

Our quality management system is built upon a framework of internationally recognised certification standards, establishing a three-pronged quality assurance model comprising "system certification endorsement + end-to-end process control + full lifecycle traceability". This ensures product quality remains stable and reliable, meets regulatory compliance and standards, and fully satisfies the market access requirements and application standards of diverse global markets.

Quality Assurance System Empowered by Authoritative Certifications
The company has established a multi-tiered compliance system covering quality, environmental and industry-specific areas. Through the dual support of standardised management systems and product certification, we have laid a solid foundation for product quality:
1. IATF 16949 Automotive Quality Management System Certification
2. ISO 9001 Quality Management System Certification
3. ISO 14001 Environmental Management System Certification
4. UL/CUL Product Safety Certification
5. CE Product Compliance Certification
 

End-to-End Closed-Loop Quality Control Measures
Leveraging authoritative certification systems, the company has established a seamless, end-to-end quality control mechanism covering the entire process from "incoming materials – production – finished products", enabling the precise interception of non-conforming products:
1.Incoming Quality Control (IQC)
2. In-Process Quality Control (IPQC)
3. Final Inspection of Finished Products (FQC)
 

Full Lifecycle Quality Traceability and Continuous Improvement
The company has established a unique batch identification traceability system for products. Through batch codes, full-chain traceability of raw material sources, production equipment, process parameters, testing data and operators is achieved, ensuring that quality issues can be precisely pinpointed and swiftly investigated.Furthermore, in accordance with the continuous improvement requirements of ISO 9001, we regularly collect customer application feedback and production process quality data to conduct systematic data analysis and process optimisation. This drives the dynamic enhancement of our quality management system and product quality, thereby continuously improving customer satisfaction.

Wenzhou Jiankun Connectors Co., Ltd. was established in 2013 and is situated in the core area of the Wenzhou Yueqing connector industry cluster. As an R&D-driven National High-Tech Enterprise, the company integrates the research, design, production and sales of connectors.With over a decade of technical expertise, a comprehensive production and sales system, and rigorous quality control, the company has become a leading enterprise in the automotive and general-purpose electronic connector sectors. It provides highly reliable, application-specific connection solutions to global customers, specialising in high-end sectors such as automotive, new energy, and consumer electronics.

Core Strengths: Dual Empowerment through Compliance and Technology
Adhering to the philosophy of "Compliance as the Foundation, Technology as the Cornerstone", the company has established a comprehensive quality control and R&D support system:

• System Certification: Certified to ISO 9001, ISO 14001, ISO 45001 and IATF 16949, the company implements standardised control throughout the entire process to meet automotive-grade requirements and has successfully integrated into the core automotive electronics supply chain.
• Certification and Testing: Our full product range holds international certifications including UL, CUL and CE. Our laboratory is CNAS-accredited and capable of conducting rigorous testing, such as high and low-temperature and vibration tests, to support R&D and quality validation.
• R&D and Innovation: As a National High-Tech Enterprise, we focus on securing patents in fields such as automotive electronics and new energy, whilst deepening our expertise in key technologies including miniaturisation and high conductivity, keeping pace with cutting-edge industry trends.
   

Product Portfolio: Focusing on core sectors, catering to diverse applications
We have established a comprehensive connector portfolio covering four major sectors-automotive, new energy, electronics and LED-combining standardised and customised capabilities:

• Automotive Connectors: Designed for core components such as vehicle lighting and ECUs, featuring wide-temperature resistance, vibration resistance and anti-loosening properties, and compliant with automotive standards.
• New Energy Connectors: Designed for applications such as BMS and charging stations, featuring high voltage resistance and low contact resistance, and compatible with 800V high-voltage platforms.
• Electronics and LED Connectors: Covering SMT, LED lighting connectors and wiring harnesses, featuring miniaturisation and high integration to meet the demands of consumer electronics and industrial equipment.
   

Development Strategy: Focusing on cutting-edge technologies and deepening independent innovation

In the future, we will focus on three key sectors: artificial intelligence, 5G and new energy. We will develop high-end connectors with technological innovation at the core; expand our global footprint through a systematic market strategy and deepen cooperation with leading enterprises; and, relying on our professional team, drive product upgrades towards "high reliability, high precision and high added value", striving to become a benchmark enterprise in the global connector industry.