Whma-a-620b Revision A To Revision B Red[...] Page

: Updated definitions for several terms to match the IPC-T-50 terms and definitions standard. Compliance Note

: Expanded criteria and definitions for overmolding, potting, and encapsulation processes to better reflect modern manufacturing techniques.

: Clarified requirements for wire insulation support and conductor brush to reduce ambiguity in Class 2 and Class 3 inspections. Administrative and Structural Updates WHMA-A-620B Revision A to Revision B red[...]

: Revision B introduced criteria for ultrasonic welding of splices and terminals, which was not formally addressed in Revision A.

The IPC/WHMA-A-620B standard, titled "Requirements and Acceptance for Cable and Wire Harness Assemblies," introduced several significant updates and technical changes from Revision A. Because this standard is copyrighted, full "redline" documents are typically only available for purchase through IPC or authorized distributors. : Updated definitions for several terms to match

: Revised requirements for solderless wrap connections to align with updated industry reliability data.

However, the primary technical content changes from Revision A to Revision B include: Key Technical Changes : Revised requirements for solderless wrap connections to

: Revision B was a major effort to harmonize criteria with IPC-A-610 (Acceptability of Electronic Assemblies) and IPC-J-STD-001 to ensure consistency across the electronics industry.