"...car lobby could "steer" the legislators..."
Was that intentional? :)
regards,
Bev Christian
Nortel Networks
> -----Original Message-----
> From: Martin Bund [SMTP:[log in to unmask]]
> Sent: Thursday, July 29, 1999 8:43 AM
> To: [log in to unmask]
> Subject: Re: [LF] New Topic?
>
> Dennis,
>
> This is not an IPC issue. Here in Europe legislation has been created
> and passed based upon consumer pressure over "green" issues. Not even
> the mighty car lobby could steer the legislators into exceptions.
>
> Regards,
> Martin.
>
> "Bernier, Dennis" wrote:
> >
> > There are many reasons for NOT using lead-free solder alloys that melt
> so
> > much higher than Sn63Pb37, component and reliability problems being at
> the
> > top of the list. However, if organizations, such as IPC, continue to
> > promote the "Get the Lead Out" slogan, it will become POPULAR to push
> the
> > electronics industry into the unknown realm of new alloys and new
> problems.
> >
> > There is no question that the USE of lead-free alloys will result in
> higher
> > cost at very little benefit.
> >
> > -----Original Message-----
> > From: Bill Grajek [mailto:[log in to unmask]]
> > Sent: Wednesday, July 28, 1999 3:40 PM
> > To: [log in to unmask]
> > Subject: Re: [LF] New Topic?
> >
> > Going to 260 C is really pushing the window on how well a small wire
> wound
> > inductor will survive.
> > The lowest magnet wire insulation is 105C continuous rated. Most of our
> > inductors are wound with either UL Class B (130C), 155C, or 180C grade
> > insulated magnet wire. So, if the soldering temperature is approaching
> twice
> > the magnet wire insulation rating, even though it is buried inside the
> > device,
> > I am not so sure about the effects for long term reliability. The
> duration
> > and
> > temperature exposure are a critical balance as it is for survival
> utilizing
> > current PCB assembly methods.
> >
> > We have seen many a part come back to us from out of control IR
> processing
> > ovens with the red insulation of the magnet wire oozing out of the part
> and
> > the
> > customer complaining about having deads. The fix has been to go to
> higher
> > thermal grade raw materials to enable our parts to survive up in that
> range
> > for
> > soldering. All of this has come at a cost. Can't say that it's been a
> easy
> > change for manufacturability, but the results have proven to be positive
> in
> > allowing higher soldering temperatures.
> >
> > Nevertheless, is the industry ready for component price increases just
> to
> > allow
> > for elevated processing temperatures?
> >
> > Best Regards,
> > Bill Grajek
> > Applications Engineering Manager
> > API Delevan, Inc.
> >
> > ----------
> > > From: Brooks, Peter <[log in to unmask]>
> > > To: [log in to unmask]
> > > Subject: Re: [LF] New Topic?
> > > Date: Wednesday, July 28, 1999 12:25 PM
> > >
> > > Well I for one expect big time problems going up in temperature to 260
> C.
> > >
> > > One of the suggestion I made to the NEMI lead free component subgroup
> is
> > to
> > > actually go out and test current packages to see what happens.
> > >
> > > Pete Brooks
> > > Harris Semiconductor
> > >
> > > -----Original Message-----
> > > From: David Suraski - AIM [SMTP:[log in to unmask]]
> > > Sent: Wednesday, July 28, 1999 11:24 AM
> > > To: [log in to unmask]
> > > Subject: [LF] New Topic?
> > >
> > > Where is everyone? Don't tell me that all lead-free questions
> have
> > been
> > > resolved!
> > >
> > > Are there any component folks on the group now? If so, do any
> of
> > you
> > > have any comments as to the ramifications of increasing reflow peak
> temps
> > to
> > > 240C, 250C, 260C, etc.? We were discussing reliability issues a couple
> of
> > weeks
> > > ago, but I'm not sure how many questions actually were resolved.
> > >
> > > Thank you and best regards,
> > >
> > > David Suraski < [log in to unmask]
> > <mailto:[log in to unmask]>>
> > > Technical Marketing Specialist
> > > AIM < www.aimsolder.com <http://www.aimsolder.com>>
> > > 25 Kenney Drive/Cranston, RI 02920
> > > Tel: 401-463-5605/1-800-CALL-AIM/Fax: 401-463-0203
> > >
> > >
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> > Electronic
> > Assemblies.
> > Please visit IPC's Center for Lead-Free Electronics Assembly
> > (http://www.ipc.org/html/leadfree.htm ) for additional information.
> > For technical support contact Gayatri Sardeshpande [log in to unmask] or
> > 847-790-5365.
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> > with following text in the body:
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> > IPCWorks -October 25-28 featuring an International Summit on Lead-Free
> Electronic
> > Assemblies.
> > Please visit IPC's Center for Lead-Free Electronics Assembly
> > (http://www.ipc.org/html/leadfree.htm ) for additional information.
> > For technical support contact Gayatri Sardeshpande [log in to unmask] or
> 847-790-5365.
> > ################################################################
>
> --
> Martin Bund Procurement Engineer
> Motorola Ltd,
> 16 Euroway, Tel No +44 1793 568940 Pager No 0839 430806
> Blagrove, Swindon, Mobile 07801 831661
> England. SN5 8YQ. Fax No +44 1793 568722
> mailto:[log in to unmask] mailto:[log in to unmask]
>
> ################################################################
> Leadfree E-Mail Forum provided as a free service by IPC using LISTSERV
> 1.8c
> ################################################################
> To subscribe/unsubscribe, send a message to [log in to unmask]
> with following text in the body:
> To subscribe: SUBSCRIBE Leadfree <your full name>
> To unsubscribe: SIGNOFF Leadfree
> ################################################################
> IPCWorks -October 25-28 featuring an International Summit on Lead-Free
> Electronic
> Assemblies.
> Please visit IPC's Center for Lead-Free Electronics Assembly
> (http://www.ipc.org/html/leadfree.htm ) for additional information.
> For technical support contact Gayatri Sardeshpande [log in to unmask] or
> 847-790-5365.
> ################################################################
################################################################
Leadfree E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask]
with following text in the body:
To subscribe: SUBSCRIBE Leadfree <your full name>
To unsubscribe: SIGNOFF Leadfree
################################################################
IPCWorks -October 25-28 featuring an International Summit on Lead-Free Electronic
Assemblies.
Please visit IPC's Center for Lead-Free Electronics Assembly
(http://www.ipc.org/html/leadfree.htm ) for additional information.
For technical support contact Gayatri Sardeshpande [log in to unmask] or 847-790-5365.
################################################################
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