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What Happened To The IPC 620b Standard Revision B Cable Testing Standards? View The Top 4 Changes



IPC 620 standard revision

If our points of view are aligned, you would concur that getting the desired success without offering quality products or services is “very” difficult. Is it not? Nothing will help you flourish if you can’t give your clients and distributors high-quality, long-lasting electronics, no matter how many experienced engineers you’ve hired or how much expensive equipment you’ve put in. And this is especially true if you work for a well-known cable and wire harness assemblies maker.

A wide variety of electronic equipment uses cable and wire harnesses. It comprises items for the aerospace industry, cars, medical devices, telecommunications, IT technology, building, robotics, and automation. Compared to numerous separate assemblies, wiring harnesses are less expensive, take less time to install, shield wires from the elements, and improve safety. The technicians must consider the applicable IPC 620 industry standards and specifications to create specialized harnesses or assemblies for the required project.

Just so you know, whether in the medical, telecommunications, military, space, automotive, or aviation industries, sturdy cable and wire harness assemblies are needed to link their gadgets. Therefore, if you want to enter these markets, it is essential to “concentrate” on making cables and wires of the highest quality. But how, you might ask? IPC 620 Standard Revision B enters the scene in this situation.

IPC 620b Standard Revision B: What Is It? 

An electronics industry-standard book known as IPC-A-620B, or “Requirements and Acceptance for Cable/Wire Harness Assemblies,” was created through the “joint” participation of the Wire Harness Manufacturers Association and the Institute of Printed Circuits. In 2002, this standard book was initially published. Since then, professionals in the electronics sector have used it as the gold standard to assess the caliber of newly manufactured cables and wires.

The specifications for cable and wire harness assemblies based on the “typical” visual criteria can be found in detail in the IPC 620B Standard Revision B. You can, therefore, rapidly understand the qualities of a “wire assembly” that are acceptable and undesirable by perusing all the drawings and illustrations. And in this way, teaching your production workers the requirements that make certain cable and wire goods appropriate and unsuitable will be simple. Not only that, but the IPC 620B Standard also “significantly” aids in establishing the proper degree of quality expectations for clients and suppliers. 

In 2012, IPC/WHMA-A-620’s Revision B module saw several substantial modifications. Updates include expanded criteria and graphics for molding and potting, lead-free acceptance requirements, and electrical and mechanical testing. There are 682 images and photographs in full color. Engineers will discover technical changes, improved usability, and compatibility with other important assembly standards in the B revision of IPC/WHMA-A-620. Revision B specifies the product categories and provides standards for Target, Acceptable, Process Indicator, and Defect conditions. It facilitates the assortment of acceptable visual quality standards for each class.

What Has Changed With Revision B Of The Ipc 620b Standard For Cable Testing?

As you’re aware, the IPC-A-620 did not include a Test part when it was first introduced in 2002. Then, WHMA and IPC members collaborated with other leaders in the electronics sector to develop a thorough test section, or section 19. Furthermore, the “Test” part of the IPC-A-620 handbook’s version A emerged as the “main” alteration in the entire instructional book when it hit the market in July 2006.

You know about several important modifications to the IPC 620 Standard Revision A. It is time to look into the changes made to Revision B, which was released in October 2012.

What Have Significant Modifications Been Made To Ipc 620b Table 19-2, Continuity Test Minimum Requirements, Class 3?

The following text passage was added to this section: 

Rev. A: “Whoever is greater among them, 2 ohms or 1 ohm, and the resistivity of the wire.”

“2 ohms or 1 ohm and the greatest stated resistance of the wire, whichever is maximal among them,” reads Rev. B.

Dielectric Withstanding Voltage Test Minimum Requirements, Table 19-4

The following content item was added to this section:

Note 2: The voltage level appropriate is appropriate when the clearance range evaluated is larger than or equal to 0.58 mm. The customer and producer would first be expected to agree if de-rating certain test levels is necessary.

Electrical Test Methods – Dielectric Withstanding Voltage, Section 19.5.3

The preceding linguistic content was included in this section:

“Harnesses shall be examined for Dielectric Withstanding Voltage for all isolated continuation paths as indicated in the continuity tests on points that must be tested. And when there is a chance of a short, it would get involved with conductive connection shells and new contact positions.

Electrical Test Methods – Insulation Resistance Are Covered In Section 19.5.4. 

The following educational material was incorporated in this subsection: 

“Harnesses should be checked for Dielectric Withstanding Voltage for all isolated continuation lines as indicated in the continuity tests on points that need to be tested. And when there is a chance of a short, it must get involved with conductive connection shells and new connection positions. 

For the purpose of defining craftsmanship and excellence in the manufacturing of cable and wire harnesses and related assemblies, technicians can obtain training, certification, and educational materials based on the IPC/WHMA-A-620B.