Hello Stadem

We currently use this method but we have +1000 PCBA different to measure and
we would have to calculate it to put in our ERP system and then we will to
update.

Best regards
Juliano Bettim Ribeiro
DATACOM
Engenharia de Processos
Rua América, 1000, Bairro Industrial, Eldorado do Sul, RS - 92990-000
Telefone: +55 51 39333000 - Ramal 3484
Telefone Celular: +55 51 98446-2135
Fax: +55 51 39333003
site:   www.datacom.ind.br
e-mail:  [log in to unmask]

-----Mensagem original-----
De: Stadem, Richard D [mailto:[log in to unmask]] 
Enviada em: quarta-feira, 4 de novembro de 2020 10:47
Para: TechNet E-Mail Forum; Datacom - Juliano Ribeiro
Assunto: RE: [TN] Amount THT Solder Volume Calculator

How precise do you have to be? You can simply weigh some of the populated
CCAs on a precision scale prior to soldering and again after soldering to
get the average weight of solder per assembly. The moisture weight loss
would be very minimal. A sample size of 8 will give you a 99.9% accurate
mean average. No loss of product, just perform the weighing using production
samples.

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From: TechNet <[log in to unmask]> On Behalf Of Datacom - Juliano Ribeiro
Sent: Wednesday, November 4, 2020 7:25 AM
To: [log in to unmask]
Subject: [TN] Amount THT Solder Volume Calculator

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Hello to all

 

We need to calculate the theoretical amount of solder (In the wave solder -
THT components) that will be used for each board, so Is there formula to
calculate THT solder volume? 

For example for SMD solder paste volume we use Greely formula to calculate
the theoretical amount of solder paste.

 

ie: Greely Formula

Greely = (Alloy Specific Gravity x Flux Specific Gravity) / (Flux % x Alloy
Specific Gravity )+ (Metal % x Flux Specific Gravity)

 

Thank you

 

Juliano Bettim Ribeiro

DATACOM

Engenharia de Processos
Rua América, 1000, Bairro Industrial, Eldorado do Sul, RS - 92990-000
Telefone: +55 51 39333000 - Ramal 3484

Telefone Celular: +55 51 98446-2135

Fax: +55 51 39333003
site:    <http://www.datacom.ind.br/> www.datacom.ind.br
e-mail:   <mailto:[log in to unmask]>
[log in to unmask]