IPS/WHMA-A is an individual level certification based on a standard published by IPC titled “Requirements and Acceptance for Cable and Wire Harness. The IPC/WHMA-A Standard Revision C remains the only industry-consensus standard for Requirements and Acceptance of Cable and Wire Harness. The IPC/WHMA-A, Requirements and Acceptance for Cable/Wire Harness Assemblies is a joint project of IPC (Institute of Printed Circuits) and WHMA (Wire .
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IPC/WHMA-A620 Wire Harness Training Kit
Includes products suitable for applications where the major requirement is the function of the completed assembly. Certification is not revision specific.
Back to top of page. The same maximum-allowable current threshold is ipc/wham-a-620 throughout the test time. Here are some sound reasons why this is not considered a risk: These files are being made available to update existing training PowerPoints in each of the indicated courses with typographical and other editorial corrections for each course.
They also increase the chance of an intermittent or latent defect in the form of a short.
The NEW AC optional hands-on training has been developed to help users become familiar with the basics of cable ipc/wham-a-620 wire harness fabrication. If the User and Manufacturer do not establish and document the acceptance class, the Manufacturer may do so.
Test time is very short and does not relate to the “working voltage” specifications. The following downloads apply to revision B of the Space addendum. To shorten production test time without degrading the test, the IR test time ends as soon as the minimum resistance value is reached. These are rather small creepage distances. Space addendum for C course materials are available!
The A requirements specify that electrical tests should operate at such levels as not to degrade the electrical properties. Even wire for industrial and commercial applications is usually tested in the manufacturing process. Class 2 – Dedicated Service Electronic Products Includes products where continued performance and extended life is required, and for which uninterrupted service is desired but not critical. The following note was added, Note 2: Class 1 – General Electronic Products Includes products suitable for applications where the major requirement is the function of the completed assembly.
The following paragraph was added. By having earned this portable credential, you’ll receive immediate recognition, legitimacy and value throughout the electronics industry.
Printing a test copy on a blank piece of paper first. However, the need for a good HV test increases as the spacing gets smaller. Classes of products are defined and ipc/wma-a-620 criteria for Target, Acceptable, Process Indicator and Defect conditions to support the collection of visual quality acceptability requirements for each class.
These files are being made available to update existing training PowerPoints in each of the indicated courses with the changes in the Amendments for each course.
Includes products where continued performance and extended life is required, and for which uninterrupted service is desired but not critical. The HV test voltage is most likely problematic for very small connectors in Class 3 applications. Will these test voltages damage them? Certified IPC Trainer candidates are sent by their parent companies to receive intensive training and are then certified to provide Application Specialist training.
Program Benefits Certification demonstrates commitment to customer requirements and greatly facilitates certification to ISO Certification or other quality assurance initiatives. Revision C, developed by task group members from user and supplier companies, represents a consensus among industry leaders.
Translated Training Materials Translated training materials for this program are available. Tests performed at the default voltages in A have become very popular.
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An Introduction to A Cable Testing Standard
Revision C materials are not yet available. This information is intended to help guide you in understanding why specific tests and their required parameters are needed. Detailed pictures communicate acceptable and unacceptable features of an assembly. To use the files: Updates to Training Materials for Amendments These files are being made available to update existing training PowerPoints in each of the indicated courses with the changes in the Amendments for each course.
I have insulated wires or connectors with a specified maximum working voltage that ipc/whma-a6-20 lower than ipc/whma-aa-620 required in the A test specification. It is true that smaller gaps between isolated conductors result in lower breakdown voltages.