----------
送件者: Somsak O. <[log in to unmask]>
收件者: apyeo <[log in to unmask]>
副本抄送: KS Wat <[log in to unmask]>; Wichet R.
<[log in to unmask]>
主旨: Fw: PCB Fabrication,Vendor Supplier Survey & ESD Requirements
日期: 1999年11月16日 AM 06:20
DEAR AP YEO
GOOD AFTERNOON ! COULD YOU PLEASE KINDLY MAKE NECESSARY
PREPARATION OF YOUR COMPANY INFORMATION AS WE RECEIVED VERY DETAIL
INFORMATION REQUIRED BY OUR CUSTOMER.PLEASE ADVISE VIA RETURN WHETHER IT IS
POSSIBLE FOR YOU TO GET ALL DETAIL INFORMATION WHILS WE ARE VISITING YOUR
FACTORY. THANK YOU.
With Best Regards
Somsak O.
[log in to unmask]
-----Original Message-----
From: John Blankevoort <[log in to unmask]>
To: Wichet R. <[log in to unmask]>
Cc: Morgan Taylor <[log in to unmask]>; George E Powell
<[log in to unmask]>; [log in to unmask] <[log in to unmask]>;
[log in to unmask] <[log in to unmask]>
Date: Sunday, November 14, 1999 7:18 PM
Subject: RE: PCB Fabrication,Vendor Supplier Survey & ESD Requirements
Wichet,
Thank you for your thorough response. It is encouraging to see that we both
use the same IPC documents to reference our standards and guidelines. I
would like to add that IPC-RB-276 is further supplemented by the IPC-6011
series.
As you are aware our vendor survey does not cover PCB
fabrication/manufacturing issues. It is appreciated that you have supplied
a sample Process Audit Report for the PCB vendor survey/audit scheduled for
this November. I did notice on this report that there was no Form # or
Revision on the document. We are looking for the link back to your internal
documents, please advise.
Our greater concern is the quality of the PCB manufacturer that you will be
selecting. Naturally we have been in close contact with our current PCB
suppliers and we know the product quality. In considering your upcoming
audit of your PCB supplier please be aware that in addition to an
audit/survey copy, we would like to request the following items:
Company Name & Point of Contact
Location of Supplier
Company History (products, delivery, capability, capacity etc)
List of internal Workmanship Standards
Manufacturing Process
Manufacturing Order/Travelers (sample is ok)
Testing & Inspection
And potentially for future use, PCB Coupon samples of:
System, Sensor and Illumination PCB's, microsectioned according to
IPC-TM-650. We are looking for all IPC-A-600 Class 2 acceptability
criteria. Please ensure that adequate micro sectioning methods are used,
for if improperly done these methods can conceal anomalies rather than
revealing them.
The ESD protocols for your assembly areas are appropriate. All personnel
are conscious of the potential ESD hazards and are wearing wrist straps. It
is further reassuring to hear that you would make provisions in your Class
10K SMT and Reflow areas to accommodate the wrist straps for our product as
well. It would be requested that some language be added to your current
internal ESD plan(?) that describes this added measure for our ZAPPER
product. I am assuming however, that procedure # 90-00015 Handling,
Storage, Packaging, Preservation and Delivery...contains this requirement,
please advise.
Wichet, during our visit/survey last week my colleagues and I were very
impressed with the Stars facility. Your efforts should be applauded as we
recognized throughout the facility, the process controls, documentation,
accept/reject criteria for every process station we visited.
John Blankevoort
Manufacturing & QA
ZAPCODE Products Corporation
435-881-0922
-----Original Message-----
From: Wichet R. [mailto:[log in to unmask]]
Sent: Friday, November 12, 1999 4:28 AM
To: [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]
Subject: PCB Fabrication,Vendor Supplier Survey & ESD Requirements
Let me introduce myself , my name is Wichet and I am in charge of
Quality & Reliability Assurance in STARS. According to your e-mail to Mr.
Somsak & Mr. Polsak regarding " PCB Fabrication , Vendor Supplier Survey &
ESD Requirements" ,I would like to provide the information which PCB
manufacturer use as standards to you as following.
1. What standards or processes do you use for Class 2 PCB Fabrication?
a.. IPC-RB-276 "Qualification and Performance Specification for
rigid board".
b.. IPC-ML-950 Rev. C "Performance and Specification of Multilayer
Printed Wiring Board"
2. What standards or processes do you use for Class 2 HASL ( Hot Air
Solder Leveling ). QQ-S-571 for standards SN63?
a.. IPC-S-804 Rev.A "Solderability Test Method for Printed Wiring
Board."
b.. QQ-S-571"Standard for 60Sn/40Pb."
3. If applicable , what standards or processes do you use for Class 2
Preconditioning of the PCB.
a.. IPC-S-804 Rev.A "Solderability Test Method for Printed Wiring
Board".
b.. QQ-S-571 "Standards for 60 Sn/40Pb."
4. What standards or processes do you use for Class 2 PCB Test Methods
for Micro sectioning.IPC-TM-650 Micro sectioning?
a.. IPC-TM-650"Test Method Manual".
b.. IPC-RB-276
c.. IPC-ML-950
5.What standards or processes do you use for Class 2 PCB Test Method
for Continuity Testing?
a.. Reference to MIL55110 Rev.E . For open circuitry is 20 Ohm and
short circuitry is 5 Mega Ohm.
6.What standards or processes do you use for Class 2 PCB Solder Mask
aplication?
a.. IPC-SM-840 Rev. B"Qualification and Performance of Permanent
Polymer Coating ( Solder Mask ) for Printed Board."
7. Other standards that PCB manufactuer use as.
a.. IPC-D-300 Rev.G"Printed Board Dimension and Tolerance".
b.. IPC-A-600 Rev.E "Acceptability of Printed Board".
8. As we are using the approved PCB manufacturer by Alactel ,so that we
do not have the vendor survey information for this PCB manufacturer yet.
But we do have plan to perfrom audit for this PCB manufacturer by ourselves
on dated 22-Nov-1999. We also send the sample of the audit report for other
part manufacturer which we conducted such audit for your reference in the
attached file.
9. ESD. We reference to EIA standard : EIA-625 for ESD practice in
STARS.
9.1 According to your concern that the skin is not contact with a
conductive path to ground and consequently may discharge through an
assembly when handle. We would like to inform that we will be implementing
wrist strap for operator throughout assembly line in order to avoid such
problem.
Please kindly review the above issue and advise any comment you may
have.
Thank you & Best regards
Wichet R.
##############################################################
TechNet Mail List 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 TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################
|
