The two flux are both Rosin.


 
RongJun Deng

-----Original Message-----
From: Ramon Essers | ETECH-trainingen [mailto:[log in to unmask]] 
Sent: Thursday, October 29, 2015 4:14 PM
To: TechNet E-Mail Forum <[log in to unmask]>; Deng RongJun <[log in to unmask]>
Subject: Re: [TN] No-wetting on Mini USB (Nickel plating)



(Send on The road with iPhone)
Maybe you have different type of flux.
What type of flux you use for handsoldering? And what type of flux is used in your solderpaste?!

Regards,

Ramon Essers
ETECH-trainingen

> Op 29 okt. 2015 om 08:32 heeft Deng RongJun <[log in to unmask]> het volgende geschreven:
> 
> Hi Technetters
> 
> I have got a problem with a SMT type mini USB connector. The four pins contacted shield are no-wetting after reflow soldering.  But can be solder well by iron.
> The pins only plated by Nickel, is it possible the oxidation film creating on pin surface and then affect soldering? 
> 
> Picture:
> https://goo.gl/photos/qap1CBEWzUEJEc5i6
> 
> Thanks in advance.
> 
> RongJun Deng
> 
> 
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