High Quality PCB
PCB and PCBA Quality Assurance: Comprehensive Testing and Inspection
Every order, regardless of prototype or mass production, receives the utmost attention to quality to ensure all customer expectations are met. Our Quality Assurance Policy means that we have put in the necessary framework to ensure consistency and that quality standards are met within our company.
At JHYPCB, we understand the critical importance of rigorous testing and inspection in PCB and PCBA manufacturing. In today’s rapidly evolving electronics industry, the quality and reliability of printed circuit boards can make or break a product’s success. Our comprehensive testing and inspection processes for both PCBs and PCBAs are designed to catch potential issues early, ensure compliance with industry standards, and deliver products that meet or exceed our customers’ expectations. From basic continuity checks to advanced X-ray inspections, our multi-stage quality assurance approach guarantees that every board leaving our facility is ready to perform in even the most demanding applications.

Quality Assurance Policy
High-Quality PCB Manufacturer
JHYPCB is proud to be one of the reputed China PCB manufacturers offering high-quality and highly reliable PCB Manufacturing and Assembly Services for over 10 years.
Electronic contract manufacturers should not only provide product manufacturing services. Quality should be at the heart of everything. And we are continuously working to improve the standard of delivering the PCB fabrication and assembly service to our customers, ensuring an outstanding high quality and reliability level with a full audit. Each PCB manufacturer takes ownership of the quality of their work, and every stage of the process is subject to rigorous quality assurance procedures.
At JHYPCB, we are proud of the consistently high quality we provide. Our high-quality PCB manufacturing and assembly service level is only one of the reasons why our customers return to us again and again.
Certifications:






Quality Management System
Our Quality Management System
Our PCB manufacturing and assembly services are designed to meet or exceed customer expectations by providing high-quality products and services. We adhere to the following principles:
Customer satisfaction
We are dedicated to meeting customer demands and requirements by delivering timely and reliable products that meet their needs. We strive to exceed customer expectations in terms of performance and quality.Quality management system
We consider quality as the foundation of our company’s long-term development. Our Quality Management System (QMS) is designed to guarantee that our products and services comply with industry standards such as IPC-6012C/IPC-A-600G and ISO 9001, which provide a framework for managing and improving our business processes. Our QMS includes several key components, including planning and control, continuous improvement, training and development, communication, design specifications and DFM checks, material selection and supplier management, manufacturing process control, semi-finished product inspection, and final inspection, delivery, and after-sales service.Continuous improvement
We continuously seek to improve our processes and procedures to enhance efficiency, reduce costs, and increase product quality. Regular audits and evaluations identify areas where we can enhance our performance and implement changes to our practices.Regulatory compliance
We strictly adhere to national laws and regulations and comply with relevant environmental, safety, and health standards. We regularly update our knowledge of regulatory requirements, including RoHS, REACH, etc., to ensure that our manufacturing and assembly processes are compliant.Environmental protection
We have implemented environmentally friendly practices into our manufacturing and assembly processes by using eco-friendly materials and minimizing waste. We strive to minimize our impact on the environment while ensuring that our products meet or exceed industry standards.
Through these principles, our PCB manufacturing and assembly services can continue to improve and provide high-quality products and services that satisfy customers’ increasing demands. We communicate regularly with our customers to ensure we understand and meet their requirements. If you require any further information or modifications, please contact our quality department. We appreciate your trust and support.
Implementation of IPC-6012C, IPC-A-600G, and ISO 9001 Standards
At JHYPCB, we rigorously implement industry-leading standards to ensure the highest quality in our PCB manufacturing processes:
IPC-6012C (Qualification and Performance Specification for Rigid Printed Boards)
- We adhere to the stringent requirements for hole quality, copper thickness, and surface finish.
- Our manufacturing processes are aligned with the performance classes defined in IPC-6012C, ensuring we meet or exceed the required specifications for each product type.
- We conduct regular internal audits to verify compliance with IPC-6012C standards.
IPC-A-600G (Acceptability of Printed Boards)
- Our quality control team uses IPC-A-600G as a comprehensive guide for visual acceptance of PCBs.
- We train our inspectors to identify and categorize defects according to IPC-A-600G criteria.
- Our inspection processes cover all aspects outlined in IPC-A-600G, including board edges, holes, terminals, plating, etching, and marking.
ISO 9001:2015 Quality Management System
- We have implemented a comprehensive quality management system that aligns with ISO 9001:2015 requirements.
- Our system includes documented procedures for all key processes, ensuring consistency and traceability.
- We conduct regular management reviews to assess the effectiveness of our quality management system and identify areas for improvement.
- Our staff undergoes continuous training to stay updated with the latest quality management practices and standards.
By integrating these standards into our daily operations, we ensure that every PCB we produce meets the highest industry standards for quality and reliability.
PCB Testing and Inspection
At JHYPCB, we employ a comprehensive suite of testing and inspection methods to ensure the quality and reliability of every PCB we produce. Our multi-stage process includes:
Visual Inspection
Manual Visual Inspection
Our trained inspectors conduct detailed visual examinations of PCBs to identify surface defects, misalignments, and other visible issues. This hands-on approach allows for the detection of subtle abnormalities that automated systems might miss.
Automated Optical Inspection (AOI)
We utilize state-of-the-art AOI systems to rapidly and accurately inspect large volumes of PCBs. These systems can detect issues such as:
- Incorrect hole sizes or locations
- Copper trace width violations
- Solder mask defects
- Component placement errors
Electrical Testing
Continuity and Isolation Testing
We perform thorough electrical tests to ensure all connections are properly made and there are no short circuits. This includes:
- Checking for open circuits in traces
- Verifying isolation between adjacent traces
- Testing for proper connectivity of vias and through-holes
Flying Probe Test
Our flying probe testers offer flexible, programmable testing for both prototype and low-volume production runs. Benefits include:
- No need for expensive dedicated test fixtures
- Ability to test complex, high-density boards
- Quick setup times for new designs
Bed of Nails Test
For high-volume production, we employ bed of nails testing, which offers:
- Rapid testing of multiple boards simultaneously
- Consistent, repeatable results
- Ability to perform both analog and digital tests
Impedance Testing
We conduct impedance testing to ensure signal integrity in high-speed PCBs. Our process includes:
- Time Domain Reflectometry (TDR) measurements
- Verification of controlled impedance traces
- Adjustment of manufacturing parameters based on test results
Solderability Testing
To ensure reliable solder joints, we perform solderability tests, including:
- Wetting balance tests
- Solder float tests
- Surface finish evaluations
Cleanliness Testing
We verify the cleanliness of our PCBs to prevent potential reliability issues. Our testing includes:
- Ionic contamination testing
- Surface insulation resistance (SIR) testing
- Visual inspections for residues and foreign materials
Thermal Stress Testing
To ensure our PCBs can withstand thermal cycles, we conduct:
- Thermal shock tests
- Solder float thermal stress tests
- Accelerated thermal cycling
Microsection Analysis
For in-depth quality verification, we perform microsection analysis, which involves:
- Cross-sectioning of PCBs to examine internal structures
- Measurement of plating thicknesses
- Evaluation of via and through-hole quality
- Assessment of layer-to-layer registration
Through this comprehensive testing and inspection process, JHYPCB ensures that every PCB we produce meets the highest standards of quality and reliability, providing our customers with confidence in their electronic products.



PCBA Testing and Inspection
At JHYPCB, we understand that the assembly process introduces new complexities and potential issues. Our PCBA testing and inspection procedures are designed to ensure the highest quality and reliability of the final assembled product.
First Article Inspection (FAI)
FAI is a critical step in our PCBA process, serving as a comprehensive initial evaluation of the assembled board.
- Detailed visual and dimensional inspection of the first assembled unit
- Verification of component placement, orientation, and soldering quality
- Comparison against the bill of materials (BOM) and customer specifications
- Documentation of results for customer approval and future reference
Automated Optical Inspection (AOI) for PCBA
Our AOI systems for assembled boards can detect:
- Component presence, absence, and orientation
- Solder joint quality and defects
- Polarity of polarized components
- Foreign object debris (FOD)
X-Ray Inspection
X-ray inspection is crucial for examining hidden solder joints and internal structures.
- 2D X-ray for rapid inspection of solder joints, especially for BGAs and QFNs
- 3D X-ray CT scanning for complex, multi-layer assemblies
- Detection of voids, shorts, and insufficient solder
In-Circuit Testing (ICT)
ICT provides a comprehensive electrical test of the assembled PCB:
- Rapid testing of every net on the board
- Verification of component values and basic functionality
- Detection of shorts, opens, and incorrect components
- Custom fixture design for each PCBA layout
Flying Probe Testing for PCBA
Flying Probe Testing offers flexibility for low-volume or prototype PCBA testing:
- No need for custom fixtures, reducing setup time and cost
- Ability to test hard-to-reach points on densely populated boards
- Easy program modifications for design changes
- Particularly useful for mixed-technology boards
Functional Testing
We develop custom functional tests to verify that each PCBA performs as intended:
- Simulation of real-world operating conditions
- Verification of all specified functions and features
- Performance testing under various environmental conditions (temperature, humidity, etc.)
- Stress testing to ensure reliability under extreme conditions
Burn-In Testing
For high-reliability applications, we offer burn-in testing:
- Extended operation of PCBAs under elevated temperature and/or electrical stress
- Identification of early-life failures (infant mortality)
- Customizable duration and conditions based on product requirements
Environmental Stress Screening (ESS)
ESS helps identify latent defects that might not appear under normal conditions:
- Thermal cycling to stress solder joints and component connections
- Vibration testing to simulate transportation and use conditions
- Combined temperature and vibration testing for comprehensive screening
Through this multi-faceted approach to PCBA testing and inspection, JHYPCB ensures that every assembled board not only meets but exceeds quality expectations, providing our customers with reliable, high-performance electronic products.






Quality Assurance Program
Quality Assurance Measures
Our comprehensive quality assurance program encompasses the entire production process, from pre-fabrication to final inspection:
- Pre-fabrication Engineering Review: Thorough analysis of design files to ensure manufacturability and identify potential issues before production begins.
- Incoming Quality Control: Rigorous inspection and testing of all incoming materials to ensure they meet our high standards.
- In-process Quality Control: Continuous monitoring and testing throughout the manufacturing process to catch and correct any issues early.
- DFM Check: Design for Manufacturability review to optimize designs for production efficiency and reliability.
- DFT Check: Design for Testability analysis to ensure comprehensive testing can be performed efficiently.
- DFA Check: Design for Assembly review to optimize designs for efficient and reliable assembly processes.
- Electrical Test: Comprehensive testing of all electrical connections and functions.
- Automated Optical Inspection (AOI): High-speed, high-accuracy inspection of PCB and PCBA surfaces.
- Manual Visual Inspection: Detailed visual checks by trained inspectors to catch subtle defects.
- First Article Inspection: Comprehensive evaluation of the first produced unit against all specifications.
- Review of Fabrication Documentation: Thorough check of all production documentation for accuracy and completeness.
- Flying Probe Testing: Flexible electrical testing for both PCB and PCBA, especially useful for prototypes and low-volume runs.
- Solder Paste Inspection: Verification of solder paste deposition quality before component placement.
- X-ray Inspection: Non-destructive inspection of hidden solder joints and internal structures.
- In-Circuit Testing: Comprehensive electrical testing of assembled PCBAs.
- Regular Equipment Calibrations: Ensuring all test and measurement equipment maintains accuracy.
- Final Quality Control (Outgoing Inspection): Thorough final check of all products before shipment to ensure they meet all specifications and quality standards.
Each of these measures plays a crucial role in our commitment to delivering consistently high-quality PCB and PCBA products to our customers.
Quality Objectives
At JHYPCB, we set stringent quality objectives to ensure we consistently meet and exceed our customers’ expectations:

PCB Manufacturing Pass Rate
>99.5%

PCBA Manufacturing Pass Rate
>99%

On-Time-Delivery
>98%

Customer Satisfaction
>95%

First Article Inspection Approval Rate
>98%

Continuous Improvement Projects
Minimum 2 per quarter
How We Achieve Our Quality Objectives?
- Consistency: We manufacture and deliver consistent quality products through rigorous process control and continuous monitoring.
- Feedback: We provide timely feedback to our customers and actively seek their input for improvement.
- Training: We impart regular training to all our employees, motivating them and ensuring their total involvement in quality processes.
- Process Improvement: We strive for achieving cost-effectiveness through ongoing process improvements and lean manufacturing techniques.
- Improvement in QMS: We continuously enhance our Quality Management System to achieve total customer satisfaction.
- Quality Monitoring: We have instituted a comprehensive system to monitor quality at both the manufacturing and consumer levels.
- Technology Integration: We regularly invest in advanced testing and inspection technologies to enhance our quality assurance capabilities.
- Supplier Management: We work closely with our suppliers to ensure the quality of incoming materials meets our high standards.
By focusing on these objectives and strategies, JHYPCB maintains its position as a leader in high-quality PCB and PCBA manufacturing, ensuring that our customers receive products that consistently meet or exceed their expectations.
I've just received my assembled PCB boards from JHYPCB and want to say how pleased I am. The customer service, technical support, and PCB assembly service by JHYPCB are all first rate."
Edmunds Gages - Canada
Nowadays, it is rare to find suppliers that offer high-quality PCB fabrication and assembly services and excellent delivery at a competitive price. JHYPCB possesses all of these attributes along with exceptional customer service."
PCB Designs Inc. - USA