Article View: sci.electronics
Article #3718Re: PCB vs. wirewrap
From: Alan Watson
Date: Mon, 13 Nov 1989 14:31
Date: Mon, 13 Nov 1989 14:31
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1346 bytes
From article <850@carroll1.UUCP>, by dnewton@carroll1.UUCP (Dave 'Post No Nicknames' Newton): > > I don't like routing PCBs by hand, but I don't like wire-wrapping large > boards either. (Manual tool at this point) > Is either one of them better? I've heard that a lot of critical circuits > are wire-wrapped for reliability. Is this true? > GENERALLY SPEAKING, Good wire-wrap is more reliable. PCBs suffer because they aren't very flexible. Any excessive bending will break solder joints, possibly crack foil traces. Also you have to worry about cold-solder joints, acid corrosion, etc. A good wire-wrap connection is gas-tight so corrosion won't degrade the connection and of course it can withstand quite a bit of flexing. Naturally it is pretty easy to change a wire-wrapped layout. I think that you need a good wire-wrap gun to get consistently good connections, plus it will really speed up the work. waw
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!brutus.cs.uiuc.edu!samsung!xanth!mcnc!rti!tijc02!waw103References:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!brutus.cs.uiuc.edu!samsung!xanth!mcnc!rti!tijc02!waw103 From: waw103@tijc02.UUCP (Alan Watson ) Newsgroups: sci.electronics Subject: Re: PCB vs. wirewrap Message-ID: <775@tijc02.UUCP> Date: 13 Nov 89 14:31:50 GMT References: <850@carroll1.UUCP> Distribution: usa Organization: Texas Instr., Johnson City TN Lines: 21