A standard developed by IPC

1 IPC/WHMA-A-620 ASwith Amendment 12012 - JuneSpace Applications ElectronicHardware Addendum toIPC/WHMA-A-620 ASupersedes IPC/WHMA-A-620 ASMarch 2011A standard developed by IPC Association Connecting Electronics IndustriesThe Principles ofStandardizationIn May 1995 the IPC s Technical Activities Executive Committee (TAEC) adopted Principles ofStandardization as a guiding principle of IPC s standardization : Show relationship to Design for Manufacturability(DFM) and Design for the Environment (DFE) Minimize time to market Contain simple (simplified) language Just include spec information Focus on end product performance Include a feedback system on use andproblems for future improvementStandardsShouldNot: Inhibit innovation Increase time-to-market Keep people out Increase cycle time Tell you how to make something Contain anything that cannotbe defended with dataNoticeIPC standards and Publications are designed to serve the public interest through eliminating mis-understandings between manufacturers and purchasers, facilitating interchangeability and improve-ment of products, and assisting the purchaser in selecting and obtaining with minimum delay theproper product for his particular need.

2 Existence of such standards and Publications shall not inany respect preclude any member or nonmember of IPC from manufacturing or selling productsnot conforming to such standards and Publication, nor shall the existence of such standards andPublications preclude their voluntary use by those other than IPC members, whether the standardis to be used either domestically or standards and Publications are adopted by IPC without regard to whether their adop-tion may involve patents on articles, materials, or processes. By such action, IPC does not assumeany liability to any patent owner, nor do they assume any obligation whatever to parties adoptingthe Recommended standard or Publication. Users are also wholly responsible for protecting them-selves against all claims of liabilities for patent PositionStatement onSpecificationRevision ChangeIt is the position of IPC s Technical Activities Executive Committee that the use and implementationof IPC publications is voluntary and is part of a relationship entered into by customer and an IPC publication is updated and a new revision is published, it is the opinion of the TAEC that the use of the new revision as part of an existing relationship is not automatic unless requiredby the contract.

3 The TAEC recommends the use of the latest October 6, 1998 Why is therea charge forthis document?Your purchase of this document contributes to the ongoing development of new and updated industrystandards and publications. standards allow manufacturers, customers, and suppliers to understandone another better. standards allow manufacturers greater efficiencies when they can set up theirprocesses to meet industry standards , allowing them to offer their customers lower spends hundreds of thousands of dollars annually to support IPC s volunteers in the standardsand publications development process. There are many rounds of drafts sent out for review andthe committees spend hundreds of hours in review and development. IPC s staff attends and par-ticipates in committee activities, typesets and circulates document drafts, and follows all necessaryprocedures to qualify for ANSI s membership dues have been kept low to allow as many companies as possible to , the standards and publications revenue is necessary to complement dues revenue.

4 Theprice schedule offers a 50% discount to IPC members. If your company buys IPC standards andpublications, why not take advantage of this and the many other benefits of IPC membership aswell? For more information on membership in IPC, please visit or call 847 you for your continued support. Copyright 2012. IPC, Bannockburn, Illinois, USA. All rights reserved under both international and Pan-American copyright , scanning or other reproduction of these materials without the prior written consent of the copyright holder is strictly prohibited andconstitutes infringement under the Copyright Law of the United with Amendment 1 Space ApplicationsElectronic HardwareAddendum to IPC/WHMA-A-620 ADeveloped by the Space Electronic Assemblies IPC/WHMA-A-620 Addendum Task Group (7-31fs) of the Product Assurance CommitteeCommittee (7-30) of IPCU sers of this publication are encouraged to participate in thedevelopment of future :IPC3000 Lakeside Drive, Suite 309 SBannockburn, Illinois60015-1249 Tel 847 847.

5 IPC/WHMA-A-620AS -March 2011 This Page Intentionally Left BlankAcknowledgmentAny document involving a complex technology draws material from a vast number of sources. While the principal membersof the IPC Bottom Termination Components (BTC) Task Group (5-21h) of the Assembly & Joining Processes Committee(5-20) are shown below, it is not possible to include all of those who assisted in the evolution of this standard . To each of them,the members of IPC extend their AssuranceCommitteeIPC/WHMA-A-620 ASTask GroupTechnical Liaisons of theIPC Board of DirectorsChairMel ParrishSTI ElectronicsChairGary McGuireMarshall Space Flight CenterDongkai ShangguanFlextronics InternationalShane WhitesideTTM TechnologiesSpace Electronic Assemblies IPC/WHMA-A-620 Addendum Task GroupGrushka Arye, A. A. TrainingConsulting and Trade Teresa, AAI CorporationMorris Barry, Advanced Debbie, Advanced Leroy, AerojetBerrun Lilia, AirBorn guyen Vu, Amphenol Canada Bill, ASTA - PortsmouthUniversityHurst Greg, BAE SystemsOzarowski Agnes, BAE SystemsBanks Marvin, Ball Aerospace &TechnologiesVermillion Jonathon, Ball Aerospace &TechnologiesBogert Gerald Leslie, Bechtel PlantMachinery, Thomas, Boeing - IntegratedDefense SystemsRedmond Patrick, Boeing CompanyValianu Zenaida, CelesticaBellon Mary, Boeing SatelliteDevelopment CenterSpeidel Glenn, Carleton Marlin, Cirris SystemsCorporationCiviello Joshua, Defense Supply CenterColumbusRosin Gabriel, Elbit Systems Yaakov, ELTA Systems Leo, EPTAC CorporationPasquito Helena, EPTAC CorporationChism ancy, FlextronicsFreeman Vicky (Fortunata)

6 , FlextronicsAmerica, LLCF ribbins Stephen, Fribbins TrainingServicesDavison Ray, FSIM onteiro Anthony, Hamilton SundstrandRogers Doug, Harris Corporation,GCSDF ranco , Honeywell AerospaceRumas Richard, Honeywell CanadaMastorides John, HoneywellInternationalValladares Hector, HoneywellInternationalHebden Ronald, Honeywell TechnologySolutions Brad, ITTDo Minh, Jet Propulsion LaboratoryGhaffarian Reza, Jet PropulsionLaboratoryPhillips Kim, Jet Propulsion LaboratoryYoung Alan, Jet Propulsion LaboratoryZulueta Phil, Jet Propulsion LaboratoryFeldmesser Howard, Johns HopkinsUniversityKryszak Jeff, K-TECH nologiesLaser T. John, L-3 CommunicationsMoss orma, L-3 CommunicationsTalbot Blen, L-3 Communications olan Steve, Lockheed Martin Vijay, Lockheed Martin Missile& Fire ControlPolk Sam, Lockheed Martin Missilesand Fire ControlStringer Robert, Lockheed MartinMissiles and Fire ControlGreen Hue, Lockheed Martin SpaceSystems CompanyMcCarrie Kelly, Lockheed MartinSpace Systems CompanyPetcosky Pamela, Lockheed MartinSystems IntegrationMoffitt James, Moffitt ConsultingServicesSachenik Mary Lou, Moog Leonard, ASA Ames ResearchCenterHumphrey Robert, ASA GoddardSpace Flight CenterPlante Jeannette, ASA Goddard SpaceFlight CenterCooke Robert, ASA Johnson SpaceCenterWong Anthony, ASA Johnson SpaceCenterBiggs Don, ASA Marshall SpaceFlight CenterBlanche James, ASA Marshall SpaceFlight CenterDietrich Tom.

7 ASA Marshall SpaceFlight CenterGamble Charles, ASA Marshall SpaceFlight CenterHodge Ron, ASA Marshall SpaceFlight CenterMcGuire Garry, ASA Marshall SpaceFlight CenterWorley Scott, ASA Marshall SpaceFlight CenterWhite Tim, ASA Stennis Space CenterOlague Callie, orthrop GrummanGandhi Mahendra, orthrop GrummanAerospace SystemsMc utt Randy, orthrop William, orthrop GrummanSSESJune 2012 IPC/WHMA-A-620AS with Amendment 1iiiRasmus William, orthrop GrummanSSESB lakley Peggi, SWC CraneMehta Chetan, OneSource GroupGarrett Matt, Phonon CorporationPreecha Elvira, Qualcomm Richard, Radiall USA, John, Radiall USA, Jeff, RaytheonKrueger Lynn, Raytheon CompanyMaciolek Lisa, Raytheon CompanyManning Kenneth, Raytheon Company elson David, Raytheon CompanyOrtloff William, Raytheon CompanySannicandro Gary, Raytheon CompanyJohnston Kathy, Raytheon MissileSystemsMehrotra Mradul, Raytheon MissileSystemsMillman George, Raytheon MissileSystemsMiranda Rosa, Raytheon MissileSystemsOka Glenn, Raytheon Missile SystemsScharnberg Charles, Raytheon MissileSystemsVasquez Leticia, Raytheon MissileSystemsKane Patrick, Raytheon SystemTechnologyEhlinger Caroline, Rockwell CollinsSargent Tammy, Rockwell CollinsJohnson eil, Saab AvitronicsSkaanning Finn, Skaanning Quality &Certification-SQCC litheroe Terry, Solder TechnologiesOwens Gregg, Space ExplorationTechnologiesBell Roger, Space Systems/LoralParrish Mel, STI Electronics, Patricia, STI Electronics, William, Technic Rick, TE ConnectivityClancy Vecchiolli Tracy, TechnicalTraining CenterEngler Michael.

8 The AerospaceCorporationFeistel Katie, The AerospaceCorporationChamness Calette, Army Aviation& Missile CommandFoster Daniel, Army Aviation &Missile CommandGragg Ty, Unicircuit Dominic, United Space AllianceTucker - Evoniuk Linda, VergentProducts, with Amendment 1 June 2012ivTable of ContentsThe following topics are address in this or Previously Approved of this of Lead-Free Free Plague (Cuprous Oxide Corrosion) Plague Control Plan Minimum Shipping and Limited Life ArticleThe following reference numbers are to IPC/WHMA-A-620A Clauses that are modified or added in this or Specialized of Not Aids and and [New]Personnel [New]Vision [New]Adhesives, Potting Materials, andOther [New]Temperature and [New]Health and [New]Storage and Damage and End of , Components and Equipment Materials See , Components and Equipment Materials , Components and Equipment Materials Connection General Connection Soldering Anomalies Partially Visible or Hidden Solder Preparation, Insulation Requirements Bifurcated Terminals Bottomand Top Route Requirements Bifurcated Terminals Staked Requirements Pierced/Perforated/Punched Requirements Hook Requirements Cup Requirements Series Connected Connection Turret Connection Bifurcated Connection Pierced/Perforated Connection Hook Connection Cup Terminals5 Crimp Terminations (Contacts and Lugs)

9 And Formed Open and Formed Open Barrel Insulation Support and Formed Open Barrel Insulation Inspection WindowJune 2012 IPC/WHMA-A-620AS with Amendment and Formed Open Barrel Conductor and Formed Open Barrel Crimp and Formed Open Barrel Conductor and Formed Open Barrel Carrier Cutoff and Formed Closed Barrel Conductor Crimp and [New]Stamped and Formed Closed Barrel WithoutInsulation Support Insulation Contacts Insulation Clearance6 Insulation Displacement Connection (IDC) Termination, Flat Cable End Cutting7 Ultrasonic Splices Splices Splices Lap Two or More Splices Lap Insulation Opening (Window) Splices Heat ShrinkableSolder Splices Splices Double [New] Wire In-Line Junction Devices(Jiffy Junctions) Weld Mounting Jackpost Relief Clamp Relief Wire Dress Straight Relief Wire Dress Side Damage Limits Hard Face Mating Damage Limits Soft Face Mating Surface or Rear Seal Damage Contacts ExposedPins, Protected Sockets Basis Metal [New]Connector Damage Contacts Exposed Sockets, Protected Pins, , MIL-DTL-83513 Micro of Contacts and SealingPlugs into Connectors10 Molding/Potting12 and Orientation, the marking is re-peated at intervals of more than m [ ft].

10 Sleeve Wrap Sleeve Markers Markers Tie Wrap13 Coaxial and Twinaxial Cable Connector Center Conductor Connector Terminal and Stripping of Biaxial andSimilar Multi-Conductor Shielded and Stripping of Biaxial andSimilar Multi-Conductor Shielded Wires Jacket and Tip and Strippi