Precision Custom Cable Assembly & Wire Harness
Quality Control Validation
Engineered for Zero Defects. ISO 9001:2015 quality, built to IPC/WHMA-A-620 — 100% electrically tested in Taiwan, with US engineering support in California.
Equipment, Certification & Traceability
Production runs on computer-controlled crimping presses and automated cut/strip machines, with in-process crimp-force monitoring (CFM) that flags out-of-spec terminations in real time. Quality is managed under an ISO 9001:2015 system registered by ARES International Certification Co., Ltd. Every lot carries full material traceability from incoming reel to shipped assembly.
Prototype Fast in the US, Scale in Taiwan
For North American OEMs, TeleWire pairs Taiwan manufacturing economics with US-based engineering and sales support. You get a sample-first workflow — DFM review, prototype build, and first-article validation before production — with one accountable point of contact from quote to delivery.
The Step-by-Step QA Workflow
Quality isn't an afterthought; it's engineered into every phase of our manufacturing cycle. Here is how we integrate rigorous validation from raw material intake to final delivery.
Incoming Material Inspection
Validating copper purity, jacket thickness, and UL compliance of all raw materials before they enter the production floor.
In-Process Quality Control (IPQC)
Continuous monitoring during assembly, including first-piece sign-offs, crimp height measurement, and pull-force sample checks.
100% Final Testing
Every single assembly undergoes automated Hipot and continuity testing to guarantee zero shorts, miswires, or insulation failures.
Outbound Documentation
Generating Certificates of Compliance (CoC) and detailed First-Article Inspection (FAI) reports for your sourcing records.
Quality Control — TeleWire Technology
Cable assembly quality control at TeleWire Technology is governed by ISO 9001:2015 and built to IPC/WHMA-A-620, the industry workmanship standard for cable and wire harness assemblies. Every assembly is inspected at incoming material, in-process (IPQC), and final stages, then undergoes 100% automated electrical testing — continuity and hipot (dielectric withstand) — before shipment, with crimp pull-force validation and micro-section analysis on sampled lots. We build to Class 1, Class 2, or Class 3 acceptance criteria per your drawing, with full lot traceability and First Article Inspection (FAI) reports.
Comprehensive Validation:
TeleWire Technology does not rely on sample-based guesswork. Our quality control infrastructure is built to guarantee the reliability of every custom cable and wire harness assembly that leaves our floor. From raw material inspection to final product sign-off, our testing protocols eliminate f
Automated Hipot Testing
We utilize high-voltage automated Hipot testing to verify the dielectric strength and insulation integrity of every assembly. This ensures absolute protection against current leakage and guarantees safe operation in high-stress electrical environments.
Destructive Pull Force Testing
Mechanical failure is not an option. Our destructive pull force testing pushes crimps and joints to their absolute limits, validating that our automated crimping processes consistently exceed industry tensile strength requirements.
Micro-Section Analysis
We go inside the connection. Through precision micro-section analysis, we evaluate the internal geometry of crimped terminals under high magnification, verifying optimal gas-tight compression, void-free connections, and perfect wire deformation.
Cable Assembly & Wire Harness Test Matrix
Every assembly is validated against IPC/WHMA-A-620 acceptance criteria to your specified workmanship class.
| # | Test | Method / Coverage | Standard | Acceptance Criteria |
|---|---|---|---|---|
| 01 | Continuity | Automated, 100% of units | IPC/WHMA-A-620 | Zero opens / shorts / miswires |
| 02 | Hipot (dielectric withstand) | Automated, 100% of units | IPC/WHMA-A-620 | No breakdown at rated test voltage |
| 03 | Crimp pull-force | Destructive, sampled per lot | IPC/WHMA-A-620 Table 4-3 | Meets/exceeds Class 2–3 minimum tensile by gauge |
| 04 | Micro-section | Destructive, sampled | IPC/WHMA-A-620 | Gas-tight crimp; correct compression, no voids |
| 05 | First Article Inspection | Per production run | Customer drawing + IPC-620 | Dimensional + electrical conformance, documented |
| 06 | Workmanship / visual | 100%, IPC-trained operators | IPC/WHMA-A-620 Class 1/2/3 | Meets the specified acceptance class |
Test voltages, pull-force thresholds, and sampling plans are set to your drawing and acceptance class. Request our full quality-documentation package for your build.
Need custom cable assembly for a complex application?
Schedule a 15-Minute Technical Consultation with our team to discuss your specific cable or wire harness assembly requirements.
Uncompromising Standards: ISO Certified Wire Harness Manufacturer
Sourcing custom components shouldn't be a gamble. For sourcing teams and meticulous buyers, true value isn't just about a low unit price—it's the absolute guarantee of supply chain stability and zero-rework reliability.
Operating under strict ISO 9001 protocols, TeleWire Technology implements 100% lot traceability from raw copper wire to finished assembly. We exclusively source UL-listed materials and strictly adhere to global RoHS and REACH compliance mandates, heavily mitigating your regulatory and recall risks.
By standardizing our quality control around automated, data-driven validation rather than manual spot-checks, we lower your Total Cost of Ownership (TCO) by virtually eliminating field failures, costly line-down events, and complex RMA processes.
Ready to secure your supply chain with zero-defect assemblies?
Submit your project details, and our engineering team will provide a comprehensive manufacturing analysis.
Request a Quote
Technical FAQs
Common questions from procurement and engineering teams.
Do you provide First Article Inspection (FAI) reports?
Yes, we provide comprehensive First Article Inspection (FAI) reports for all new custom cable assemblies and wire harnesses. This ensures that every specification, tolerance, and material requirement is met and documented before moving into full-scale production.
What is your standard Acceptable Quality Limit (AQL)?
Because we implement automated 100% final testing (including Hipot and continuity) rather than relying solely on batch sampling, we operate with a zero-defect tolerance goal. For specific cosmetic or non-critical dimensional criteria, we default to rigorous industry-standard AQLs depending on the product class.
How do you handle lot traceability and raw material tracking?
Under our ISO 9001 quality management system, we maintain 100% lot traceability. Every finished wire harness or custom test lead can be traced back through its production batch to the original raw material lots, ensuring rapid resolution and compliance with RoHS/REACH directives.
How do you verify RoHS and REACH compliance?
We maintain a rigorous supply chain audit process. Every material lot entering our Taiwan facility must be accompanied by a Certificate of Compliance (CoC), ensuring all modular jacks, test leads, and wire insulation meet the latest global environmental mandates.
Do you offer Design for Manufacturing (DFM) support?
Absolutely. we provide completely engineering support. We review your schematics to suggest material alternatives or assembly optimizations that reduce costs while maintaining high-reliability performance.
Do you build to IPC/WHMA-A-620 Class 2 or Class 3?
Both — we build to the acceptance class specified on your drawing (Class 1, 2, or 3). If a class isn't specified, our engineering team will recommend one based on your application's reliability requirements.ere
Can I get a copy of your ISO 9001 certificate and a quality-documentation package?
Yes. The ISO 9001:2015 certificate is available on this page, and a full quality-documentation package (test reports, FAI, traceability, RoHS/REACH declarations) ships with qualifying orders or on request.
TeleWire Technology · ISO 9001:2015 certified cable-assembly manufacturer · Last reviewed July 2026