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April 2008

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Subject:
From:
"Honsowetz, Eric" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Honsowetz, Eric
Date:
Thu, 3 Apr 2008 14:37:51 -0400
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I'm not sure if you are asking all these questions about Automotive or just some...here are some personnel answers that have nothing to do with the company I work for...

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of SAHLI habib
Sent: Tuesday, April 01, 2008 10:14 AM
To: [log in to unmask]
Subject: Re: [TN] Various questions

Is there someone who wants to answer my questions?

Best regards.
  ----- Original Message ----- 
  From: SAHLI habib 
  To: [log in to unmask] 
  Sent: Thursday, March 20, 2008 1:01 PM
  Subject: Various questions


  Dear Technetters,

  Can I have the privelege to get brief answers to all my following questions :

  1- Main copper thickness used in Automotive market?
From 0.5 to above 12 Oz

  2- Does Automotive market is asking for copper thickness reduction?
Not really

  3- What is the standard maximum and minimum bow and twist for Pcbs with BGA components?
  4- What is the standard tolerance for press-fit PTH?
  5- When is panel plating suggested and When is pattern plating suggested?
  6- What is the standard value for annular ring for Pcbs with high copper thicknes (more than 3 oz)?
  7- Is AOI detecting all the PCB defects? What defects are not detected?
  8- Is the automotive market requesting 100% AOI in internal and external layers?
Zero defects but how that is done is up to the vendor

  9- What the is the maximum offset between copper and solder mask requested in the automotive market?
Application specific

  10- What the is the maximum offset between copper,solder mask and holes requested in the automotive market?
Same as 9

  11- What is the main surface finish for Automotive?
As cheap as possible - all are used and it depends per company and location which one is used...questions 12 to 14

  12- What product application is used OSP for?
  13- What product application is used ENIG for?
  14- What product application is used Immersion Silver for?
  15- Is Screen printing in use for Automotive market?
Yes

  16- Is Screen printing used to mark code matrix?
What is the code matrix?  Should I be watching for Mr. Smith?

  17- What is the maximum accepted value of Ionic contamination in Automotive market. (µg Na Cl/square for inch)
In general the needs for clean bards are greater due to wide temperature and humidity

  18- Are customers requesting Ioni chromatography or any other similar analysis?
Yes

  19- Is the automotive market requesting PEA packaging (Electrostatic Protected Area)?
It depends

  20- Is Pollution gas test required for Automotive market?
It depends

  21- What are the Significant Characteristics defined by Automotive market?
If you mean SC's & CC's those are done product by product

  22- What are the main characteristics for satndard FR4 base material?
  23- What are the main characteristics for lead free base material?

  Thank you in advance for your support.

  Habib 

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