Connector 2.5MM Pitch For LED

L2504: 2.5 mm Pitch LED Connector

L2504 2.5mm Pitch LED Connector Technical Solution
The L2504 series of connectors has been specifically optimized to meet the through-hole assembly requirements and long-term operational stability of LED lighting systems, offering an industrial-grade interconnection solution that balances flexible production with reliable performance.

 

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 Plating
Qualified external suppliers perform surface treatments such as gold plating, tin plating, and nickel plating to enhance the terminals' conductivity, oxidation resistance, and insertion/removal durability, while meeting industry environmental and reliability requirements such as RoHS and REACH.
3. Injection Molding of Plastic Housings
Engineering plastic pellets (such as PA66 and LCP) are melted at high temperatures using precision injection molding machines and injected into molds to form the connector housing, ensuring dimensional stability, insulation performance, and temperature resistance.
 

Mid-Process Manufacturing and Quality Control
1. Automated Assembly
High-speed pin insertion equipment is used to precisely insert and lock the electroplated terminals into the injection-molded housing, forming the connector's electrical connection structure. A vision positioning system ensures assembly accuracy throughout the entire process.
2. CCD Visual Inspection
A high-resolution CCD vision inspection system is used to automatically inspect for connector appearance 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 on carrier tapes and cover tapes to meet the SMT automated placement process requirements of downstream customers, while also preventing damage during transportation and storage.
4. Final 100% Inspection
Through a combined "manual visual inspection + electrical performance testing" process, we verify the connector's core electrical metrics-such as continuity, withstand voltage, and insulation resistance-to ensure the products comply with industry quality system requirements such as IATF 16949.
 

Back-End Warehousing and Delivery
1. Batch-Based Inventory Management
Qualified products are scanned and received into inventory via the WMS (Warehouse Management System), enabling production batch traceability, dynamic inventory control, and first-in, first-out (FIFO) management.
2. Order Fulfillment and Shipping
Picking and preparation are completed according to customer order requirements, and shipments are arranged through the logistics system. Batch traceability reports and Certificate of Conformity (COC) are provided throughout the process to ensure timely delivery and traceable quality.

Jiankun Connectors' core production base is supported by a fully autonomous end-to-end production system, covering the entire manufacturing process from raw materials to finished products. Through specialized workshop layouts and precise division of labor across production stages, the facility has established a highly efficient and controllable closed-loop manufacturing system, providing a solid foundation for product consistency, reliability, and on-time order delivery.
 

1. Injection Molding Workshop
Equipped with high-precision electric injection molding machines and temperature-controlled mold systems, this facility uses high-performance engineering plastics such as PA and PBT to mold product housings and insulating components. Through strict control of process parameters and a comprehensive mold maintenance system, we ensure consistent component dimensions, smooth surfaces, and excellent mechanical strength and weather resistance, thereby guaranteeing the structural reliability of our products from the outset.
 

2. Stamping Shop
Equipped with multi-station precision stamping presses and progressive dies, this facility uses highly conductive electrolytic copper strip as raw material to continuously perform processes such as stamping, bending, and cutting of terminals. Pressure and displacement are monitored in real time during the stamping process to ensure terminal contour accuracy, spring plate consistency, and cross-sectional quality, providing dimensionally precise, burr-free, and reliable workpieces for subsequent electroplating.
 

3. Assembly Shops I and II
These workshops feature fully automated assembly lines that integrate vibratory feeding, precision crimping, and in-line inspection functions to achieve precise assembly of terminals and plastic housings. The lines are equipped with force sensors and CCD vision systems that monitor insertion force and positional deviations in real time during the crimping process, while simultaneously performing initial inspections of appearance and assembly dimensions, effectively preventing defective products from entering subsequent stages.

Our fully autonomous production process not only covers the entire "injection molding–stamping–electroplating–assembly–inspection" workflow but also enables real-time traceability of process parameters, quality data, and production status through the MES system. This system ensures production capacity and delivery flexibility while maintaining continuous control over product quality throughout the entire supply chain, consistently meeting customer demands for highly reliable connection solutions.

JKUN has established a standardized product packaging and logistics management system to ensure product integrity, traceability, and delivery efficiency during warehousing and transportation.
 

1. Standardized Packaging and Warehousing
Products are packaged using protective packaging that complies with industry standards: internally secured with anti-static carrier tape or blister trays, and externally enclosed in five-layer corrugated cardboard boxes meeting the strength standard of . Each box is clearly labeled with the product model, quantity, and production batch number. Once boxed, products are stacked on wooden pallets according to uniform specifications and secured with stretch film to facilitate mechanized forklift operations and bulk transportation.
Products should be kept in their original packaging and stored in a clean, dry, and well-ventilated professional warehouse environment. Recommended storage conditions are: temperature 15°C–25°C, relative humidity below 60%. Avoid direct sunlight, extreme temperature fluctuations, or storage alongside corrosive substances. The number of stacking layers must comply with the packaging label requirements to prevent deformation or damage caused by prolonged pressure.
 

2. Diverse Shipping Options
We offer flexible and customizable transportation services, including:

• Domestic Full Truckload (FTL)/Less Than Truckload (LTL) Logistics: Suitable for large-volume orders, with door-to-door coverage;
• International Express: Supports global networks such as UPS, DHL, FedEx, and TNT to meet the needs of samples and urgent orders;
• Air and Ocean Freight: We provide international logistics solutions, including door-to-port and door-to-door services, suitable for export orders with varying time-sensitive and cost requirements.

Transportation solutions are comprehensively optimized based on the customer's location, delivery timelines, cost budget, and shipment volume, and we provide end-to-end logistics tracking information throughout the process.
 

3. Transportation Safety and Operational Guidelines
During transportation, packaging should be protected from punctures by sharp objects, heavy pressure, or violent impacts to prevent product contamination or mechanical damage caused by damaged outer packaging. Under proper handling and storage conditions, this product poses no undue health hazards to personnel. It is recommended to follow general industrial safety standards during loading, unloading, and unpacking, to properly dispose of packaging materials, and to maintain a clean and orderly work environment.
We are committed to ensuring that products are delivered to customers on time and in perfect condition through systematic packaging, warehousing, and transportation management, providing end-to-end support for the reliability and stability of the supply chain.

Jiankun's quality management system is built upon a framework of internationally recognized certification standards. Through multi-dimensional system certifications and end-to-end process control, we ensure that our products are of consistent quality, compliant with regulations, and meet global market requirements:
 

Quality Assurance System Backed by Authoritative Certifications
We have established a compliance system covering quality, environmental, and industry-specific areas. Our core certifications and their corresponding scopes of coverage include:
1. IATF 16949 Automotive Quality Management System Certification
Designed to meet the quality control requirements for automotive electronic products (such as in-vehicle connectors and body control system components), this system covers the entire product lifecycle-from design and production to delivery. It incorporates tools such as FMEA (Failure Mode and Effects Analysis) and SPC (Statistical Process Control) to ensure products meet the automotive industry's stringent standards for high reliability and stability.
2. ISO 9001 Quality Management System Certification
Establishes standardized quality control processes for all product categories, from order review and raw material procurement to finished product delivery, enabling quantitative management of quality objectives and continuous improvement at every stage to ensure product consistency and precise alignment with customer requirements.
3. ISO 14001 Environmental Management System Certification
We incorporate environmentally friendly principles into our production and quality control processes, using low-pollution, recyclable materials and processes to balance product quality with environmental compliance.
4. UL/CUL Safety Certification
Products have passed U.S. and Canadian safety standard testing, with metrics such as electrical performance and material flame retardancy meeting North American market safety regulations, ensuring electrical safety in end-user applications.
5. CE Compliance Certification
The products meet the regulatory requirements of the European Union market regarding electromagnetic compatibility (EMC) and safety performance, allowing them to be legally sold in the EU and global markets that recognize CE standards.
 

End-to-End Quality Control Measures
Based on the aforementioned certification systems, we have established an end-to-end quality control mechanism covering "incoming materials – production – finished products":
1. Incoming Quality Control (IQC)
We conduct 100% incoming inspection of raw materials (such as copper strips, engineering plastics, and plating materials). Based on the IATF 16949 standard, we have established raw material acceptance specifications. Through tests such as chemical composition analysis, dimensional inspection, and weather resistance testing, we ensure that raw materials meet product design specifications and prevent non-conforming materials from entering the production process.
2. In-Process Quality Control (IPQC)
Dedicated process inspectors are assigned to each production stage (stamping, injection molding, electroplating, and assembly). We use SPC tools to monitor key process parameters (such as stamping dimensional tolerances and injection molding temperatures). Additionally, through in-line inspections of structural features-such as double-lock plate secondary locking and external hook locking mechanisms-we ensure the production process complies with ISO 9001 standards and promptly intercept nonconforming products during production.
3. Final Product Inspection (FQC)
A comprehensive inspection is conducted on all finished products before shipment, covering electrical performance (contact resistance, rated current), mechanical performance (holding force, insertion/removal cycle life), and environmental adaptability (vibration, temperature and humidity cycling). Safety and compliance metrics corresponding to UL/CUL/CE standards are also verified. Products are only accepted into inventory after passing these inspections, ensuring 100% conformance of delivered products.
 

Quality Traceability and Continuous Improvement
We have established a unique product identification and traceability system that allows us to trace the source of raw materials, production processes, and test data via batch numbers. Furthermore, in accordance with the continuous improvement requirements of ISO 9001, we regularly collect customer feedback and production process data to optimize quality control processes and ensure the dynamic improvement of product quality.