Electronics Forum: 1b73 (Page 1 of 5)

humiseal 1b73 wicking

Electronics Forum | Fri Feb 05 20:39:41 EST 2010 | localperm79

I've recently been placed in control of operations of our SCS conformal coat sprayer and I must eliminate problems with wicking of humiseal 1b73 into surface mount connectors while also trying to minimize masking as much as possible. We use a 55:45

humiseal 1b73 wicking

Electronics Forum | Wed Feb 10 08:10:26 EST 2010 | davef

Here is a posting by P Kinner at Humiseal ... Typically, there are three main approaches to avoid coating wicking into press-fit connectors (and other keep out areas). Wicking is a phenomenon caused by a combination of low viscosity of conformal coa

Convert SMT Heller 1809 EXL 10 Zone Oven to Cure Conformal Coating 1b73

Electronics Forum | Thu Jul 06 12:31:25 EDT 2017 | bmedeiros2017

Hello, Curious to know if anyone has had some experience converting a Heller reflow oven to Cure 1B73 Coating material. Please share experience and process parameters to help obtain cure to conformal coated boards. TIA!!!

Convert SMT Heller 1809 EXL 10 Zone Oven to Cure Conformal Coating 1b73

Electronics Forum | Fri Jul 07 10:59:15 EDT 2017 | capse

I looked at the tech data for the coating. It appears to need an explosion proof oven for curing (flammable vapors from solvent). I doubt the Heller reflow is explosion proof type oven.

Conformal coating bubbles with 1B73

Electronics Forum | Wed Feb 16 12:22:54 EST 2011 | duso02

Have you always used xylene? For our 1B73 we use nothing but 73 thinner from Humiseal or PGMEA at about 50/50 depending on the humidity.

Conformal coating bubbles with 1B73

Electronics Forum | Tue Mar 01 15:07:00 EST 2011 | dennisfo

Update on 1B73 bubbles, Changed over to a mixture of Humiseal 73 thinner with coating (25 sec on Zahn 2) observed a reduction in bubble formation (approx. 20%) but still present.

Conformal Coating Height Inspection

Electronics Forum | Thu Oct 06 10:09:24 EDT 2005 | jdumont

Humiseal 1B73 Acrylic, thanks for the suggestion.

1B73LOC Conformal Coating

Electronics Forum | Mon Jun 25 11:25:54 EDT 2007 | cokedigits

i difagee

Conformal coating bubbles with 1B73

Electronics Forum | Fri Feb 18 08:08:55 EST 2011 | floydf

I have found that depressurizing the tanks when the machine is not in use reduces bubbles.

1B73LOC Conformal Coating

Electronics Forum | Mon Jun 25 10:59:49 EDT 2007 | simsj

We're using the 1B73LOC conformal coating from Humiseal. We've seen some bubbling of the coating. Their tech handbook suggested reducing our oven ramp speed. Does anyone have a good profile for this? They've always pointed me to Nordson, and Nord

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