Electronics Forum: yellow ink rohs (Page 1 of 2)

Flux turns BRIGHT yellow when in contact with Tin/ Lead

Electronics Forum | Wed Apr 01 07:18:29 EDT 2020 | proceng1

We are using Superior 515 flux to clean and tin selective solder nozzles. Yesterday the flux turned a bright yellow (like a highlighter) when heated after the flux being applied. This does not happen with our Lead Free solder, only the Lead alloy.

ROHS compliant marking Ink

Electronics Forum | Thu Jun 15 13:20:12 EDT 2006 | jem

Hello All Has anybody used or know of ROHS compliant marking Ink? In particular the permanent ink (bought in little container and used on the felt stamp pads)that QC inspectors use to stamp off a PCB after inspection. We use a trodat industrial ink

ROHS compliant marking Ink

Electronics Forum | Fri Jun 16 08:20:59 EDT 2006 | jem

Thanks for your help. Looked for an MSDS on the ink but could not find one. All this ink was ordered long before my time. I will try to contact ink vendor again. J.E.M.

ROHS compliant marking Ink

Electronics Forum | Mon Jun 19 10:26:43 EDT 2006 | slaine

Are you applying the ink onto the electronic assembly itself? if not then it doesnt have to be compliant.

ROHS compliant marking Ink

Electronics Forum | Thu Jun 15 13:41:12 EDT 2006 | patrickbruneel

Yes there is RoHS certified ink it just cost twice as much as the regular ink. Just kidding Some people ask for RoHaaS compliance on cardboard boxes, pencils etc. What a mess $%^$ To answer your question, Ink is made from ethanol (ethyl alcohol) and

ROHS compliant marking Ink

Electronics Forum | Thu Jun 15 16:24:19 EDT 2006 | patrickbruneel

I have to make a correction to my previous post There are specialized inks with cadmium pigment The easiest way to find out is to get an MSDS from your supplier and check for the presence of cadmium (which is a banned substance under the EU RoHS dir

ROHS compliant marking Ink

Electronics Forum | Mon Jun 19 19:31:19 EDT 2006 | Doug

We buy the old standard Aero Brand #1250 stamp pad ink in Black from Menke with a RoHS cert. No extra cost.

marking standard for .1% resistors?

Electronics Forum | Tue Sep 19 00:45:33 EDT 2006 | darby

Steve, I might be going crazy but I seem to remember 1%ers as being either blue or greeen instead of black, or, yellow ink on black.

RoHS solders and silver termination inks

Electronics Forum | Tue Aug 30 09:24:08 EDT 2005 | Slaine

we manufacture a range of ceramic parts that have silver termination,there is already a small leaching problem (absorption of the termination by the solder in liquid form)with Sn62 that we live with, having to implement unleaded solder they are norma

RoHS solders and silver termination inks

Electronics Forum | Tue Aug 30 12:49:59 EDT 2005 | Ted

Slaine, We use a Pd/Ag thickfilm paste. Because of the leaching we had to start using solder pastes that have silver in it. For RoHS, we are using a solder paste with an alloy of Sn95/Ag05. We also have to double print the thickfilm pastes. I h

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