MSP430F167: Conformal coating peeling.

Deb Ehrhart

Part Number: MSP430F167

Why does conformal coating peel from this part? Conformal coating is adhering to remainder of parts of this PCA but not the MSP430F167IPM.

Are molds sprayed with silicone when cover is molded?

What is the surface energy of the part?

Thank You!

0 Cameron LaFollette over 6 years ago

Hi Deb,
Can you post a picture of this? I haven't heard of this happening before. What temperatures are they being exposed to?

0 Deb Ehrhart over 6 years ago in reply to Cameron LaFollette

This is as seen under black light after tape test performed.

0 Deb Ehrhart over 6 years ago in reply to Deb Ehrhart

Temperature exposure is 68 to 72 degrees Fahrenheit.

0 Cameron LaFollette over 6 years ago in reply to Deb Ehrhart

Hi Deb,

I'm looking into this for you. What supplier did you use to obtain these parts?

0 Deb Ehrhart over 6 years ago in reply to Cameron LaFollette

Arrow Electronics; 1,787 pieces purchase in Dec. 2016.

0 Cameron LaFollette over 6 years ago in reply to Deb Ehrhart

Hi Deb,
Can you tell me more about the specific conformal coating you are using? Ie: vendor, material, and a link to the MSDS?

0 Deb Ehrhart over 6 years ago in reply to Cameron LaFollette

CONAP Part# CE-1170
Mfg: Conap
Datasheet: jarocorp.com/.../Cytec_CE-1170.pdf

I am obtaining the vendor whom we buy it from.

0 Deb Ehrhart over 6 years ago in reply to Deb Ehrhart

Any new thoughts on this?

0 Cameron LaFollette over 6 years ago in reply to Deb Ehrhart

Deb,
I apologize for the delay. We are still working this internally.

0 Deb Ehrhart over 6 years ago in reply to Cameron LaFollette

Glad to hear from you.

0 Cameron LaFollette over 6 years ago in reply to Deb Ehrhart

Deb,
I'm taking this conversation offline. I'll contact you directly.

**Attention** This is a public forum

MSP low-power microcontroller forum