QFN’s in a Lead-free environment (like SAC305). 

> On Apr 26, 2018, at 1:19 PM, Stadem, Richard D <[log in to unmask]> wrote:
> 
> Bev, you anwered at 12:17 my time, and I sent at 12:18 my time.
> Then I read your response below.
> Great minds think alike, eh?
> 
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of BEV CHRISTIAN
> Sent: Thursday, April 26, 2018 12:17 PM
> To: [log in to unmask]
> Subject: Re: [TN] Flux question
> 
> Joey,
> You probably don’t want to hear this, but… the answer is “it depends”.  How marginal is marginal? What is the lead finish? Are the pad connected to a ground plane?  What is your reflow profile?
> 
> Regards,
> Bev
> 
> Sent from Mail for Windows 10
> 
> From: Jose A Rios
> Sent: Thursday, April 26, 2018 1:06 PM
> To: [log in to unmask]
> Subject: [TN] Flux question
> 
> Is ROL0 flux an adequate one when faced with having to solder marginally oxidized components. Or should a different flux type be selected. Application is ground based/hi-rel (non flight). Flowdown is J-001 (not space addendum). Thanks….
> 
> 
> José (Joey) Ríos, Sr QA Engineer
> Mission Assurance Manager
> Kavli Institute for Astrophysics & Space Research Massachusetts Institute of Technology [log in to unmask]<mailto:[log in to unmask]>
> (617)324-6272