The IPC is working on IPC-4101 which will hopefully replace 13949.  I
think that 4101 has been sent to DESC for military approval.  DESC has
been sending out questionnaires to get industry feedback.  One open
question is whether or not a QPL will exist in the future.  Fortunately
the IPC has provided a cross reference to the old 13949 spec in their
new slash sheets so it should be easy to identify the new material spec.

Bill Dieffenbacher
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lockheed Martin Control Systems
600 Main St.  Rm R52F
Johnson City, NY  13790
Tel:   (607)770-2961
Fax:   (607)770-2056
Email:  [log in to unmask]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


> ----------
> From:         Tom Kropski[SMTP:[log in to unmask]]
> Reply To:     DesignerCouncil E-Mail Forum.;Tom Kropski
> Sent:         Tuesday, February 17, 1998 3:36 PM
> To:   [log in to unmask]
> Subject:      Re: [DC] FR4 Material Part Number
>
> Chris,
> Your right about the "S" not "P" but mil-s-13949 has been inactive
> since
> Aug-01-1997.
>
> ----------
> > From: Taylor, Chris H. <[log in to unmask]>
> > To: [log in to unmask]
> > Subject: Re: [DC] FR4 Material Part Number
> > Date: Tuesday, February 17, 1998 2:50 PM
> >
> > When did MIL-S-13949 get cancelled??? (Note: it is not MIL-P-13949
> > anymore).
> >
> >
> > Chris Taylor
> > Senior Printed Circuit Designer
> > LXE, Inc.
> > 125 Technology Parkway
> > Norcross, GA 30092
> > voice: (770) 447-4224 X3242
> > fax: (770) 447-6928
> > e-mail: [log in to unmask]
> >
> >
> >
> > >----------
> > >From:  Tom Kropski[SMTP:[log in to unmask]]
> > >Sent:  Tuesday, February 17, 1998 2:20 PM
> > >To:    [log in to unmask]
> > >Subject:       [DC] FR4 Material Part Number
> > >
> > >With the cancellation of mil-p-13949, I'm wondering what part
> number or
> > >material callout should be used when specifying GFN epoxy based
> board
> > >material for multi-layer pcb's.
> > >Like to hear from others how they specify fab material in both
> commercial
> > >and military documents.
> > >
> > >Thanks in advance,
> > >Tom
> > >
> > >################################################################
> > >DesignerCouncil 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 DesignerCouncil <your full name>
> > >To unsubscribe:   SIGNOFF DesignerCouncil
> > >################################################################
> > >Please visit IPC web site (http://jefry.ipc.org/forum.htm) for
> additional
> > >information.
> > >For the technical support contact Dmitriy Sklyar at [log in to unmask]
> or
> > >847-509-9700 ext.311
> > >################################################################
> > >
> > >
> >
> > ################################################################
> > DesignerCouncil 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 DesignerCouncil <your full name>
> > To unsubscribe:   SIGNOFF DesignerCouncil
> > ################################################################
> > Please visit IPC web site (http://jefry.ipc.org/forum.htm) for
> additional
> information.
> > For the technical support contact Dmitriy Sklyar at [log in to unmask]
> or
> 847-509-9700 ext.311
> > ################################################################
>
> ################################################################
> DesignerCouncil 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 DesignerCouncil <your full name>
> To unsubscribe:   SIGNOFF DesignerCouncil
> ################################################################
> Please visit IPC web site (http://jefry.ipc.org/forum.htm) for
> additional information.
> For the technical support contact Dmitriy Sklyar at [log in to unmask] or
> 847-509-9700 ext.311
> ################################################################
>

################################################################
DesignerCouncil 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 DesignerCouncil <your full name>
To unsubscribe:   SIGNOFF DesignerCouncil 
################################################################
Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
################################################################