![]() Not only is it a mess to clean up, the fluxes react with each other as well. oh, and NEVER EVER mix flux types ! don t use water soluble flux with rosin core solder and vice versa. you cannot tell the difference between a board made like that and a machine made. ![]() this re-melts all solder, the flux does its work and all the parts nicely auto align. one thing we do frequently is, after all parts have been soldered by hand : go quickly over the board with the 951 or 2231 pen so it is nicely wetted with flux and then go over it with the Leister ( hot air gun). the alcohol based pens are for manual rework only. This soldering rosin flux pen is designed for the prototyping, rework and repair of conventional and surface mount circuit boards. Post-soldering residues are non-conductive, non-corrosive, hydroscopic, and fungus resistant. note that these flues are NOT for reflow. The flux is composed of pure Water White (WW) grade gum rosin in a unique solvent system, with highly effective activators. Process Considerations 186 Flux-Pen ® should only be applied to areas that will be fully heated by the soldering iron or other reflow tool. This rosin flux is composed of pure Water White (WW) grade gum rosin in a unique solvent system, combined with highly effective activators. result :leaking (stuck open) or no flux comes out (stuck closed) Laying the pen flat keeps the mechanism 'wet' and prevets it jamming up. 186 Flux-Pen ® flux residues are non-conductive, non-corrosive and do not require removal in most applications. 835 is a rosin-based liquid flux with moderate activity. if you keep the pen upright once primed the flux will settle in the pump mechanism and it will jam the mechanism. DO NOT KEEP THEM UPRIGHT ONCE YOU START USING THEM ! The pen comes out of the factory with a dry tip ( no flux on it ) you need to pump the pen to prime the tip and get the flux going. Are you sure you are handling them right ? they need to be kept laying flat at all times. We either use that, or the 2231 water soluble. 835-P Rosin Flux Pen MG Chemicals UK Limited Version No: A-3.00 Safety data sheet according to REACH Regulation (EC) No 1907/2006, as amended by UK REACH Regulations SI 2019/758 Issue Date: Revision Date: L.REACH.GB.EN SECTION 1 Identification of the substance / mixture and of the company / undertaking 1.1. We run through 5 or 6 a month and buy them in 12-packs. I clean up the board when I'm done with 99% IPA, and blow it dry with air. EDIT: I ended up going with this 'Fusion' MBC-360-880 (60/40) from SRA for only 4, but I realized after reading the package, its for brazing and soldering machines. It is tried and true, even if it does leave a sticky mess behind. Personally, I use liquid rosin-type flux. If your board is just popcorn analog or digital stuff with no high voltage, no high impedance, no precision requirements, etc.- then by all means, go ahead and use no-clean flux. Manufacturer of Soldering Flux - Rosin Flux pen, Soldering Flux Pen, Kester Soldering Flux, 2331-ZX and SMT Flux Pen (No-Clean, VOC Free),Loctite MF 300 offered by Evident International, Greater Noida, Uttar Pradesh. ![]() I think the no-clean flux actually eats into the solder mask or something. This flux meets Bellcore TR-NWT-000078 and IPC SF-818 for surface insulation resistance. The No Clean Flux Dispensing Pen precisely applies a patented noncorrosive, halide free, organic low solid no clean flux. The worst part is that you can *try* to clean a board that has been soldered with no-clean flux using water or whatever chemicals you might have in your kit, but it is almost impossible to get it all off of the board, and it still causes problems with high voltage and/or impedance circuitry. The Rosin Flux Dispensing Pen quickly applies a noncorrosive type R flux. This is due to the fact that it leaves a slightly conductive residue behind. There is a slight problem with "no clean" flux though- on very high impedance circuits, or high voltage, the no-clean flux can cause problems. provides the broadest process window for a no-clean flux with less than 5 solids content. ALPHA ® ROSIN FLUX 800 (RF-800) No Clean Flux. Quote from: on December 20, 2014, 01:51:15 am "No-Clean" flux is all "the rage" these days, and if you are having your boards built by an outside assembly contractor, they probably use this by default. ALPHA ROSIN FLUX 800 (RF-800) Technical Bulletin Issue: of 6.
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