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July 2009

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Subject:
From:
John Burke <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, John Burke <[log in to unmask]>
Date:
Fri, 31 Jul 2009 18:53:04 -0700
Content-Type:
text/plain
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text/plain (332 lines)
Inge - they forgot to tell you - or stop a truck.............. 


John Burke
(408) 515 4992


-----Original Message-----
From: Inge [mailto:[log in to unmask]] 
Sent: Friday, July 31, 2009 4:20 PM
To: TechNet E-Mail Forum; John Burke
Subject: Re: [TN] AW: [TN] AW: [TN] FORMULA FOR DETERMINING GOLD PERCENTAGE
IN A SOLDE...

Someone told me, if you want play cowboy or smash pumkins, 2 kilogram Magnum
50 is best, if you are in a situation and need hit a moving target at 50
meters or longer, Walter P99 is superior.

/Inge

----- Original Message -----
From: "John Burke" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, July 31, 2009 11:29 PM
Subject: Re: [TN] AW: [TN] AW: [TN] FORMULA FOR DETERMINING GOLD PERCENTAGE
IN A SOLDE...


Myself I use a desert eagle in 50 caliber


John Burke
(408) 515 4992


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Friday, July 31, 2009 12:40 PM
To: [log in to unmask]
Subject: Re: [TN] AW: [TN] AW: [TN] FORMULA FOR DETERMINING GOLD PERCENTAGE
IN A SOLDE...

I prefer 20mikemike incendiary

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joe Fjelstad
Sent: Friday, July 31, 2009 2:16 PM
To: [log in to unmask]
Subject: Re: [TN] AW: [TN] AW: [TN] FORMULA FOR DETERMINING GOLD PERCENTAGE
IN A SOLDE...

that would be a 7.62mm round


In a message dated 7/31/2009 11:40:02 A.M. Pacific Daylight Time,
[log in to unmask] writes:

AK47

-----Original Message-----
From: TechNet  [mailto:[log in to unmask]] On Behalf Of John Burke
Sent: Friday, July 31,  2009 2:34 PM
To: [log in to unmask]
Subject: Re: [TN] AW: [TN] AW: [TN]  FORMULA FOR DETERMINING GOLD PERCENTAGE
IN A SOLDER JOINT


Ah Joyce  - you will start a discussion on what caliber.......8-)

John  Burke
(408) 515 4992


-----Original Message-----
From: TechNet  [mailto:[log in to unmask]] On Behalf Of Joyce Koo
Sent: Friday, July 31, 2009  10:06 AM
To: [log in to unmask]
Subject: Re: [TN] AW: [TN] AW: [TN] FORMULA  FOR DETERMINING GOLD PERCENTAGE
IN A SOLDER JOINT

Who ever made doc  and approved it should get shot at... seriously.  Not a
Friday joke.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]  On Behalf Of Jeremias, Michael
Sent: Friday, July 31, 2009 12:17 PM
To:  [log in to unmask]
Subject: [TN] AW: [TN] AW: [TN] FORMULA FOR DETERMINING  GOLD PERCENTAGE IN
A SOLDER JOINT

Unfortunately it is not (!) a typo  from me . The document  DIN EN  61191-1
contains  this   value  2,5 µm . But I am not confident, that this   is  low
enough for any process cases so we use  for PTH the same rule as  above  as
mentioned below Sincerely

Michael   Jeremias

-----Ursprüngliche Nachricht-----
Von: TechNet  [mailto:[log in to unmask]] Im Auftrag von Joyce Koo
Gesendet: Donnerstag, 30.  Juli 2009 12:22
An: [log in to unmask]
Betreff: Re: [TN] AW: [TN] FORMULA  FOR DETERMINING GOLD PERCENTAGE IN A
SOLDER JOINT

Must be a typo.  Should be 0.25 micron? 10 micro-inches?
--------------------------
Sent  using BlackBerry


----- Original Message -----
From: TechNet  <[log in to unmask]>
To: [log in to unmask]  <[log in to unmask]>
Sent: Thu Jul 30 04:26:14 2009
Subject: [TN] AW:  [TN] FORMULA FOR DETERMINING GOLD PERCENTAGE IN A SOLDER
JOINT

IEC  61191-1
chapter  6.2.2 contains  the  rules
< 1,4%  Volume Au, <  3% Wt Au in the final solder interconnection
<  2,5 µm for  PTH Wave soldering  (I am not confident, that  this   is low
enough for any process cases so we use  for  PTH the same rule as above)

You have to take into consideration solder  paste volume(stencil-thickness),
wetted Au-surface, wetted Au  thickness


Own investigations  show, that Au brittelness  may  occure from  1,6% Vol
and really will occure from 2,3% Vol.





Sincerly

Michael Jeremias
Industrial Engineering (OPPI41)
Electronics Production
((( Defence  Electronics
EADS Deutschland GmbH
89077 Ulm
Tel.: +49 (0) 7 31.3  92-5533
Fax:     +49 (0) 7 31.3 92-73 15
E-Fax: +49 (0) 7  31.3 92-20 5533
P Before printing, think about the environment !

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