Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Dibasic Flux Activators

#6292

Dibasic Flux Activators | 23 August, 2000

Dr. Lee: When talking about halogen-free flux activators, what does the term "dibasic" mean?

reply »

Dr. Ning-Cheng Lee

#6293

Re: Dibasic Flux Activators | 23 August, 2000

"Dibasic" means a molecule containind two acid functional groups, such as carboxylic acid. The inductive effect makes the dibasic activator more active than mono-basic activator.

reply »

#6294

Re: Dibasic Flux Activators | 24 August, 2000

Sorry, what is the "inductive effect" and how is involved in flux acticivity?

reply »

Dr. Ning-Cheng Lee

#6295

Re: Dibasic Flux Activators | 24 August, 2000

Inductive effect is the electron attraction force between chemical moieties. Inductive effect in flux activator would stabilize the dissociated organic acid, thus enhance the acidity, therefore increase the flux activity.

reply »

 Reflow System

Six Sigma Training