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Which type of lead-free solder is the best?

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tooki:

--- Quote from: eti on August 16, 2020, 05:40:10 am ---"Which type of lead-free solder is the best?"

The type that ends up in the trash by the kilo.

All this "eco" horse shit is precisely that. Lead-free solder = unreliable joints = shorter product lifespan = unjustifiable repeat sales = more revenue for the product manufacturer = more tax for the country.

It IS that simple, don't let any "wise" speeches talk you out of it. It's a load of bollocks.

--- End quote ---
This kind of hysteria is not helpful. It’s not what the OP was asking about, and it’s not even true. The worries about lead free solder being less robust aren’t proving to matter in the real world, where manufacturers quickly figured out how to use lead free just fine.

Remember that by now, many of the lead free solder exemptions have expired.

Is it as good as leaded? No. But is it the end of the world like you make it out to be? Absolutely not.

dritech:
Hi Tooki,

Thanks for your reply.
I did some research and many do not recommend using SAC305.
Apparently K100LD and sn100c are better recommended if lead-free solder is required.
Do you have any experience with these please? any advice?

ebastler:

--- Quote from: dritech on August 16, 2020, 04:08:32 pm --- I did some research and many do not recommend using SAC305.

--- End quote ---

That sounds a bit enigmatic. ::)
Could you elaborate and ideally provide some sources please?

Bassman59:

--- Quote from: eti on August 16, 2020, 05:40:10 am ---"Which type of lead-free solder is the best?"

The type that ends up in the trash by the kilo.

All this "eco" horse shit is precisely that. Lead-free solder = unreliable joints = shorter product lifespan = unjustifiable repeat sales = more revenue for the product manufacturer = more tax for the country.

It IS that simple, don't let any "wise" speeches talk you out of it. It's a load of bollocks.

--- End quote ---

OK, Boomer.

dritech:
Hi ebaster,

Just to clarify, I did not do any scientific research :) , just reading comments from users (i.e. personal experiences)
Just some highlights from just one forum (link below):

https://www.eevblog.com/forum/beginners/solder-types/

"If you really want to go lead-free in a lab environment get SN99c or SN100c. Stay far away from that SAC305 junk."

"I've had good success with Kester K100LD. It's far better than SAC305 for wire solder."

"It's the most common because it's cheap (certainly not the best performing). SN100C and K100LD are more recent, and the marketing literature insinuates performance is similar to 63/37 (i.e. good wetting, nice and shiny joints, low erosion, and cost effective)."

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