Electronics > Beginners
ROHS compliant 63/37 leaded solder paste?
smbaker:
Silly question. I bought some solder paste from amazon, leaded 63/37. I was surprised when I noticed it has a ROHS logo on the package. I thought ROHS solder and paste had to be lead-free?
Cubdriver:
That's the impression I'm under, too. RoHS should mean lead free. Either it's not 63/37 Sn/Pb solder, or, more likely, the RoHS logo has been put on the package either mistakenly or nefariously. I'd lean towards the latter. Is it branded, and if so, what brand? US source, or overseas?
-Pat
JoeN:
:-DD RoHS is a Restriction On Hazardous Substances. One of them is lead. The lead in any RoHS complaint product must be minuscule. It's mislabeled. In the US it doesn't matter, though. Leaded solder is still super common. I was just looking at pound after pound of the stuff at Fry's today.
smbaker:
The brand is "MG Chemicals", which seems to be enough of a name brand to be sold at distributors like Mouser and Digikey. As far as origin, it says on the back "M.G. Chemicals Ltd. Ontario, Canada. Product of the USA".
The reason I'm asking about this stuff is that while I'm just an amateur at SMD soldering, I've had far better luck with other pastes than I had with this crap. It was thick, dry, wouldn't push through the needle, and didn't melt or flow very well. Made me wonder if I somehow got lead-free instead of leaded. The part number (4860P-35G) clearly resolves to a leaded product though. The ROHS compliancy must be a misprint.
So it does appear to be a name brand, but I wouldn't put it past Amazon to sell a counterfeit, or for it to have sat unrefrigerated on the shelf for an unknown period of time.
Ian.M:
Misprints don't just happen. If its genuine, and mislabelled as ROHS compliant it would expose MG Chemicals to serious liability in the European market, so any changes to existing product labelling would be checked carefully. OTOH the fakers don't care as once they've successfully offloaded their current inventory into the supply chain, they just fold their shell company and start another one to distance themselves from the fallout.
Post a good sharp photo of it, especially all labels so those familiar with the genuine article can look for discrepancies.
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