FAQ – Solder Joint Encapsulants

bp256

What are solder joint encapsulant adhesives?

YINCAE solder joint encapsulant adhesives are epoxy based materials with a built-in flux function.

During reflow, solder joint encapsulant adhesives remove oxides allowing the solder joint to form, and encapsulate the solder joint in a 3D polymer network.

 

What are the benefits of solder joint encapsulant adhesives?

  1. Enhance solder joint strength
  2. Improve device reliability
  3. Eliminate underfill and the underfilling process
  4. Eliminate electrical issues (dendrites, electro-migration…)
  5. Eliminates cleaning processes
  6. Lower costs

 

How can solder joint encapsulant adhesives lower costs?

  1. 100 % reworkable – eliminate scrap cost
  2. Air reflowable – eliminate nitrogen cost
  3. Lower material usage
  4. Short manufacturing process – See comparison below
  5. High process yield

 

Underfill Process

underfill process

 

Solder Joint Encapsulant Process

SJE Process

 

 

Why is the reliability for solder joint encapsulant adhesives better than underfills?

Eliminate shrinkage factor generated by underfill (gap is filled with air when using solder joint encapsulants) – Less stress improves reliability

 

 

Can solder joint encapsulants help eliminate head – in – pillow issues?

Yes, solder joint encapsulant products provide additional mechanical strength to solder joints to help mitigate the impact of warpage.

 

 

Why can electro-migration issues be eliminated using YINCAE solder joint encapsulants?

Solder joint encapsulants encapsulate the solder joints after reflow to prevent dendrite formation.

 

 

What is BP 256?

BP 256 is a ball bumping adhesives designed to enhance solder joint strength during ball bumping processes

 

Advantages

  1. Increase throughput
  2. Improve reliability
  3. Eliminate additional cleaning steps
  4. Eliminate underfilling process in SMT production
  5. Reduce costs

 

Is there more information BP 256 available?

A brochure specifically for BP 256 with more detailed information and reliability data is located on our website.

 

Is more information (i.e. TDS, additional material options…) for YINCAE solder joint encapsulant products available?

Yes, please contact us using one the links provided below.

 

Contact us for general questions

Contact us for technical inquiries

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