Wire Harnesses & Cable Assembly Manufacturer Services
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A-620C
Classes
Operators
Standard
Workmanship Requirements
Key elements of the IPC/WHMA-A-620 standard
IPC/WHMA-A-620C
| Standard | IPC/WHMA-A-620C |
| Classes | Class 1, 2, and 3 |
| Scope | Wire harness and cable assembly |
| Operators | Certified production staff |
| Inspection | Trained inspectors |
| Updates | Current revision |
Yuzhan is proud to be an IPC/WHMA-A-620 certified manufacturer. We engineer wire harnesses and cable assemblies to the strictest workmanship standards in the industry. With a team of certified operators and inspectors, we guarantee that every harness not only passes but exceeds every acceptance criterion—for crimps, solder joints, and complete assembly.
We offer manufacturing capabilities across Classes 1, 2, and 3 to suit a wide range of product needs. Class 2 ensures durability for industrial and automotive systems; Class 3 guarantees the high-reliability performance required by aerospace, defense, and medical applications.
Crimp quality is governed by defined acceptance criteria, while solder joints must meet stringent reliability requirements. Visual inspection to IPC standards detects workmanship defects, and pull force testing verifies the retention strength of every crimp.
We sustain operator and inspector certifications through continuous training programs. Our ISO 9001‑compliant quality systems integrate IPC workmanship standards into every stage of production. In addition to visual inspection, we employ rigorous testing to validate assembly quality with objective, quantifiable results.
We build to the globally accepted IPC/WHMA-A-620 workmanship standard, complemented by our IATF 16949 and ISO 13485 certifications for automotive and medical sectors. Contact us today to tailor workmanship requirements to your specific harness applications.
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100% real on-site photos. Video inspection available upon request
100% real on-site photos. Video inspection available upon request
Common Questions
IPC/WHMA-A-620 is the industry standard for acceptability of cable and wire harness assemblies. It defines workmanship requirements for crimping, soldering, cable preparation, and assembly that are recognized worldwide.
Class 1 is for general purpose products with functional requirements. Class 2 is for dedicated service products with extended life. Class 3 is for high-performance products where failure is critical. Each has progressively stricter requirements.
Yes, our production operators and inspectors are trained and certified to IPC/WHMA-A-620. Certification is maintained through ongoing training and recertification to ensure current knowledge.
We work to all three classes based on customer requirements. Class 2 is common for industrial and commercial products. Class 3 is used for aerospace, medical, and other high-reliability applications.
