Requirements and Acceptance for Cable If a conflict occurs ...

1 IPC/WHMA-A-620 DRequirements andAcceptance for Cableand Wire HarnessAssembliesDeveloped by the IPC Task Group (7-31f) of the ProductAssurance Subcommittee (7-30) and the WHMA IndustryTechnical Guidelines Committee (ITGC)Users of this publication are encouraged to participate in thedevelopment of future :IPCW iring Harness Manufacturers Assoc.(An affiliate of IPC)Supersedes:IPC/WHMA-A-620C -January 2017 IPC/WHMA-A-620B withAmendment 1 -August 2013 IPC/WHMA-A-620B -October 2012 IPC/WHMA-A-620A -July 2006 IPC/WHMA-A-620 -January 2002If a conflict occursbetween the English andtranslated versions of thisdocument, the Englishversion will takeprecedence. 1 Measurement Units and Verification of Dimensions.

2 Definition of Conditions .. Acceptable .. Defect .. Disposition .. Process Indicator .. Combined Contitions .. Conditions Not Specified .. Uncommon or Specialized Designs .. and Process Nonconformance .. Process Statistical Process Control .. Order of References .. Terms and (Foreign Object Debris) .. (Assembler) .. Evidence .. Control .. Diameter (D) .. Documentation .. Requirements Personnel Acceptance Inspection Process Verification Inspection .. Visual Inspection .. Lighting .. Magnification Aids .. Field Assembly Operations .. Health and Safety .. Electrostatic Discharge (ESD) Tools and Control.

3 Calibration .. Materials and Electrical Rework .. Repair .. Post Rework/Repair Cleaning .. 1-82 Applicable Joint Industry Society of Automotive Engineers (SAE).. American National StandardsInstitute (ANSI).. International Organization forStandardization (ISO).. ESD Association (ESDA).. United States Department of Defense (DoD).. International ElectrotechnicalCommission (IEC).. Aerospace Industries Association (AIA/NAS).. Electronics Industries ASTM Institute of Electrical and 2-23 Strand Damage and End Conductor 3-5 Table of ContentsviiIPC/WHMA-A-620 DJanuary Twisting of Insulation Damage 3-84 Soldered Material, Components and Materials.

4 Solder .. Solder Purity Maintenance .. Flux .. Adhesives .. Solderability .. Tools and Equipment .. Gold Removal .. Presoldering .. Postsoldering .. Foreign Object Debris (FOD) .. Flux Residue .. Cleaning Required .. No-Clean Process .. Solder General Requirements .. Soldering Anomalies .. Exposed Basis Metal .. Partially Visible or Hidden SolderConnections .. Wire/Lead Preparation, Wire Clearance .. Postsolder Damage .. Insulation Soldered Strand Separation (Birdcaging).. Turrets and Straight Pins .. Lead/Wire Placement .. Solder .. Bifurcated .. Lead/Wire Placement Side Route.

5 Lead/Wire Placement Bottom andTop Route .. Lead/Wire Placement Staked/Constrained Wires .. Solder .. Slotted .. Lead/Wire Placement .. Solder .. Pierced/Perforated/Punched .. Lead/Wire Placement .. Solder .. Hook .. Lead/Wire Placement .. Solder .. Cup .. Lead/Wire Placement .. Solder .. Series Connected .. Lead/Wire Placement AWG 30 andSmaller Diameter Wires .. 4-455 Crimp Terminations (Contacts and Lugs).. Stamped and Formed Open Insulation Support .. Inspection Window .. Crimp .. Insulation Clearance if No Support Crimp .. Conductor Crimp .. Crimp Bellmouth .. Conductor Brush.

6 Carrier Cutoff Tab .. Individual Wire Seal .. Stamped and Formed Closed Insulation Clearance .. Insulation Support Crimp .. Conductor Crimp and Bellmouth .. Cutoff Tabs .. Machined Insulation Clearance .. Insulation Support Style .. Conductor .. Crimping .. CMA Buildup .. Termination Ferrule Shrink Sleeving Wire Support Crimped 5-356 Insulation Displacement Connection (IDC).. Mass Termination, Flat End Cutting .. Notching .. Planar Ground Plane Removal .. Connector Position .. Connector Skew and Lateral Position .. Retention .. 6-9 Table of Contents (cont.)

7 ViiiIPC/WHMA-A-620 DJanuary Discrete Wire General .. Position of Wire .. Overhang (Extension) .. Insulation Crimp .. Damage in Connection Area .. End Connectors .. Pass Through Connectors .. Wiremount Connectors .. Subminiature D-Connector (SeriesBus Connector) .. Modular Connectors (RJ Type) .. 6-217 Ultrasonic Insulation Weld 7-38 Soldered Mesh .. Wrap .. Hook .. Lap .. Two or More Conductors .. Insulation Opening (Window) .. Heat Shrinkable Solder Devices .. Crimped Barrel .. Double Sided .. Contact .. Wire In-Line Junction Devices (Jiffy Junctions) . Ultrasonic Weld 8-249 Hardware Jackpost Height.

8 Jackscrews Protrusion .. Retaining Clips .. Connector Alignment .. Strain Clamp Fit .. Wire Dress .. Straight Approach .. Side Approach .. Sleeving and Position .. Bonding .. Connector .. Hard Face Mating Surface .. Soft Face Mating Surface orRear Seal Area .. Installation of Contacts and SealingPlugs into of Contacts .. of Sealing Plugs .. 9-2110 Over- Mold Fill .. Inner .. Outer .. Mismatch .. Fit .. Cracks, Flow Lines, Chill Marks(Knit Lines) or Weld Lines .. Color .. Blow Through .. Position .. Flashing .. Wire Insulation, Jacket or SleevingDamage.

9 Curing .. Potting (Thermoset Molding).. Filling .. Fit to Wire or Cable .. Curing .. Over-Molding of Flexible Flat Mounting and Alignment FeatureAdhesion .. Adhesion Between Ribbon andConnector Potting .. Mounting Hardware .. 10-3711 Measuring Cable Assemblies and Measuring Cable and WireLength Measuring Reference Surfaces Straight/AxialConnectors .. Reference Surfaces Right-AngleConnectors .. Length .. Breakout .. 11-4 Table of Contents (cont.)ixIPC/WHMA-A-620 DJanuary Breakout Measurement Points .. Breakout Length .. Measuring Electrical Terminal Reference Location .. Length.

10 11-712 Location and Marker Wrap Around .. Tubular .. Flag Adhesive .. Tie Wrap 12-1013 Coaxial and Biaxial Cable Center Conductor Crimp .. Solder .. Solder Ferrule General .. Insulation .. Coaxial Connector Printed WireBoard Coaxial Connector Center ConductorLength Right Angle Coaxial Connector Center Coaxial Connector Terminal Soldering .. Press Fit .. Shield Clamped Ground Rings .. Crimped Ferrule .. Center Position .. Damage .. Semirigid Bending and Deformation .. Surface Condition .. Solid .. Conformable Cable .