Whma-a-620b Revision A To Revision B Red[...] Apr 2026

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

: Revision B introduced criteria for ultrasonic welding of splices and terminals, which was not formally addressed in Revision A. WHMA-A-620B Revision A to Revision B red[...]

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. : Revised requirements for solderless wrap connections to

: Enhanced visual aids and refined acceptance criteria for coaxial and biaxial cable terminations. : Revision B was a major effort to

However, the primary technical content changes from Revision A to Revision B include: Key Technical Changes

: Numerous graphics and photos were updated or replaced with higher-resolution images to more clearly illustrate "Target," "Acceptable," and "Defect" conditions.

: 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.