Thanks for your response to my question. Would you happen to have any
study or research paper to support the response below? I have a customer
who is pushing me for a detailed evidence to show that Antimony Trioxide
(Sb3O2) will not be formed during reflow of a product containing Sb5Sn
solder paste.

RESPONSE
Not very likely. I believe for the reaction to occur between antimony
and an amphoteric oxide, such as Sn1O2, you need temperatures above at
least 800 deg. C.
If you can get your reflow oven above 800 deg. C, the production of
Sb2O3 will be the least of your worries.

Bernard Asiedu
Anadigics Inc
9086685000x5211

-----Original Message-----
From: Stadem, Richard D. [mailto:[log in to unmask]] 
Sent: Thursday, March 25, 2010 1:37 PM
To: [log in to unmask]; Bernard Asiedu
Subject: RE: [TN] Formation of Sb3O2 during reflow

Hi, Bernard
Not very likely. I believe for the reaction to occur between antimony
and an amphoteric oxide, such as Sn1O2, you need temperatures above at
least 800 deg. C.
If you can get your reflow oven above 800 deg. C, the production of
Sb2O3 will be the least of your worries.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bernard Asiedu
Sent: Thursday, March 25, 2010 11:36 AM
To: [log in to unmask]
Subject: [TN] Formation of Sb3O2 during reflow

Can Antimony Trioxide (Sb2O3) form during the reflow process if the
solder 
paste contains an alloy of Antimony and Tin? 

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