[sdiy] RoHS/Pb wetting/wicking (Was: Re: Boycott Mouser and ROHS)

[harry bissell]

The wetting (not 'bed') issue is such that visual inspection of RoHS 
joints (not 'Mexican')
is not a good indication of quality. Once we get used to it, I think 
everyone will be OK...  ;^P

H^) harry

Tom Arnold wrote:
> On Mon, Aug 14, 2006 at 07:32:53PM -0400, mcb, inc. wrote:
>   
>> Wanted to confirm an impression I'm getting.  I've done a few
>> RoHS-compliant board/component sets with Pb solder now.  I build
>> in an RF-style with flush or nearly flush solder-side leads,
>> no filets, and thorough wetting and wicking of solder into the
>> component lead holes.  It seems that the Pb/RoHS combination
>> doesn't wet quite as well.  Increased heat on the Pb solder seems
>> to improve things but it doesn't have quite the same wicking
>> action as Pb/Pb.  Is this my jingoistic imagination or is this real?
>>     
>
> I've had some wetting issues with ROHS parts like you describe.  Suitable
> application of additional noclean flux with a flux pen solves the issue.
>
>