At YIZHUOPCB, we understand that the quality of your printed circuit board assemblies (PCBAs) can make or break your electronic products. That’s why we’ve developed a comprehensive testing and inspection process that ensures every PCBA leaving our facility meets the highest standards of quality and reliability.
01
Why PCBA Testing Matters
In today’s fast-paced electronics market, there’s no room for error. A single faulty component or poor connection can lead to:
> Product malfunctions
> Reduced lifespan
> Safety hazards
> Costly recalls
Our rigorous PCBA testing and inspection protocols are designed to catch these issues before they become problems for you or your customers.
02
Our Commitment to Quality
YIZHUOPCB’s dedication to quality goes beyond mere slogans. We’ve invested in:
> State-of-the-art testing equipment
> Highly trained quality control specialists
> Continuous improvement of our processes
This commitment ensures that when you choose YIZHUOPCB, you’re choosing a partner who takes your success as seriously as you do.
PCB Bare Board Inspection
> Dimensional Checks: We verify board thickness, hole sizes, and overall dimensions.> Surface Quality: Inspecting for scratches, dents, or other imperfections that could affect assembly.> Electrical Testing: Continuity and isolation tests to ensure the bare board meets design specifications.
Component Verification
> Visual Inspection: Each component is examined for physical defects or damage.> Specification Check: We ensure all components match the bill of materials (BOM) exactly.> Moisture Sensitivity: Components are checked and stored according to their moisture sensitivity level (MSL) to prevent soldering issues.
For components that can’t be visually inspected, we use X-ray technology:
> Inspects ball grid arrays (BGAs) and other hidden solder joints
> Detects voids, insufficient solder, and misalignments
> Ensures quality of multi-layer boards
Before component placement, we verify solder paste application:
> Checks solder paste volume and alignment
> Ensures consistent solder paste height
> Prevents solder-related defects before they occur
At YIZHUOPCB, we believe in catching potential issues as early as possible. Our in-process testing ensures that each step of the assembly process meets our rigorous quality standards.
AOI systems use high-resolution cameras and advanced image processing to detect defects:
> Identifies component presence, position, and polarity
> Checks solder joint quality
> Detects bridges, insufficient solder, and other defects
By combining these in-process and post-assembly testing methods, YIZHUOPCB ensures that every PCBA we produce meets the highest standards of quality and reliability. Our comprehensive approach minimizes defects, reduces rework, and ensures your satisfaction with the final product.
ICT uses a bed-of-nails fixture to access test points on the PCBA:
> Tests for shorts, opens, resistance, capacitance, and inductance
> Verifies correct component placement and values
> Provides rapid, automated testing for high-volume production
We simulate real-world conditions to ensure your PCBA performs as expected:
> Custom test fixtures mimic the final product environment
> Verifies all PCBA functions meet design specifications
> Identifies any performance issues before final delivery
For prototypes or low-volume productions, we use flying probe testing:
> Flexible testing without the need for custom fixtures
> Ideal for quick-turn and prototype PCBAs
> Performs electrical tests similar to ICT
After assembly, we conduct comprehensive tests to ensure each PCBA functions as intended.
We ensure that each PCBA meets exact specifications:
> Measure board dimensions and hole locations
> Verify component height and clearances
> Ensure compliance with design requirements
At YIZHUOPCB, we believe that a thorough final inspection is crucial to ensuring the quality and reliability of every PCBA we produce.
Our trained inspectors perform a detailed visual examination:
> Check for proper component placement and orientation
> Inspect solder joints for quality and consistency
> Verify absence of foreign objects or debris
To simulate real-world conditions and identify potential weaknesses:
> Subject PCBAs to temperature cycling
> Perform vibration testing
> Expose boards to humidity variations
> Expose boards to rapid temperature changes> Identify potential issues with solder joints or components
> Ensure reliability in varying environmental conditions
> Subject PCBAs to various vibration frequencies and amplitudes> Detect loose components or weak solder joints
> Ensure durability in high-vibration environments
> Expose boards to controlled humidity levels> Check for corrosion, delamination, or other moisture-related issues
> Ensure reliability in diverse climates
> Monitor key process parameters> Identify and address process variations early> Continuously optimize our manufacturing processes
> Conduct root cause analysis for any defects> Implement corrective measures to prevent recurrence> Document and share learnings across our organization
> Regular staff training and skill development> Investment in latest testing and inspection technologies> Ongoing review and refinement of our quality procedures
To identify early-life failures:
> Operates PCBAs under stress conditions for extended periods
> Helps eliminate weak components before shipment
> Ensures long-term reliability in the field
To ensure electromagnetic compatibility:
> Tests for electromagnetic emissions
> Verifies susceptibility to electromagnetic interference
> Helps meet regulatory standards and product specifications
For complex, high-density boards:
> Tests interconnections without physical access
> Ideal for BGAs and other hard-to-reach components
> Reduces the need for extensive bed-of-nails fixtures
At YIZHUOPCB, we continuously invest in cutting-edge technologies to enhance our testing capabilities and ensure the highest quality PCBAs.
> State-of-the-art equipment and methodologies> Highly trained and experienced staff> Continuous investment in advanced technologies
> Confidence in the reliability of your PCBAs> Reduced risk of field failures and recalls> Cost savings through early defect detection> A partner committed to your product’s success
Flexible PCB Manufacturing
PCB Prototype Services
Metal Core PCB Fabrication
FR-4 PCB Manufacturing
Aluminum PCB Fabrication
High Tg PCB Fabrication
Heavy Copper PCB
Quick Turn PCB Fabrication
HDI PCB Manufacturing
Rigid-Flex PCB Manufacturing
LED PCB Manufacturing
High-Frequency PCB
Rogers PCB Manufacturing
Impedance Control PCB
Multilayer PCB Manufacturing
Single Layer PCB Fabrication
Double Layer PCB Fabrication
Rigid PCB Manufacturing
