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.

-----Original Message-----
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

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