This is not a good thing to do.
I do not know what you make or how many.

1. It will be more difficult to solder to the pads with the higher
melting point HASL
2. The HASL will get in the solder pot. It could conatamiante the pot
quickly depending on the material in the HASL. Solder pots are
expensive to sell as dross.
3. What data do you have on reliability for the solder joint? The lead
free section is thick from the HASL, not the joint that has been
looked at. It is not a common process.

On 5/17/12, Juliano Ribeiro <[log in to unmask]> wrote:
> We using glue dot and we'll solder in the Wave Solder Machine.
> We trying solder the pad of the component.
>
> Thank you a lot
>
> Juliano Ribeiro
> Coordenador de Produção - Placas Eletrônicas
> Elo Sistemas Eletrônicos S.A.
> Fone: (51) 2131 2217    Fax: (51) 2131 2200
> Cel: (51) 9356
> 2844
>
>
>
> -----Mensagem original-----
> De: Larry Dzaugis [mailto:[log in to unmask]]
> Enviada em: quinta-feira, 17 de maio de 2012 15:12
> Para: TechNet E-Mail Forum; Juliano Ribeiro
> Assunto: Re: [TN] PCB Lead Free with Tin Lead Process
>
> What is the lead free HASL alloy?
> Is it through hole soldering or glue dot SMT?
> Are you trying to solder test pads?
>
> On 5/17/12, Juliano Ribeiro <[log in to unmask]> wrote:
>> Hi to all,
>>
>> Is it possible we use PCB with finishing HASL (Lead Free) in our Tin Lead
>> Process - Solder Wave?
>> We need modify some parameters how the temperature?		
>>
>> Thank you a lote
>>
>>
>> Juliano Ribeiro
>> Coordenador de Produção - Placas Eletrônicas
>> Elo Sistemas Eletrônicos S.A.
>> Fone: (51) 2131 2217    Fax: (51) 2131 2200
>> Cel: (51) 9356
>> 2844
>> http://www.elonet.com.br
>>  "Antes de imprimir pense na sua responsabilidade com o meio ambiente."
>>   Adote os 4 R´s (Reduzir, Reutilizar, Repensar e Reciclar)!
>>
>>
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