Comments on: Low Temperature SMD Soldering Paste https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/ All about electronics and circuit design Mon, 20 Apr 2026 21:21:29 +0000 hourly 1 http://wordpress.org/?v=3.9.14 By: John Kek https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1831311 Mon, 01 Jul 2024 08:29:41 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1831311 This article is one of the best of the whole internet https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1814399 Tue, 26 Sep 2023 20:26:08 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1814399 Is bismuth as toxic as lead?
The substitution of lead with bismuth in the manufacturing industry has drawn growing attention recently in terms of resolving environmental problems caused by heavy metal pollution because bismuth shares many characteristics of lead but is much less toxic to living organisms.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7151860/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1814398 Tue, 26 Sep 2023 20:25:23 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1814398 Is bismuth RoHS compliant?
When thermal exposure during the assembly process is a limitation, NC273LT solder paste for bismuth bearing alloys is an excellent RoHS compliant replacement. Bismuth bearing solder pastes can reduce peak reflow temperature requirements to as low as 170°C – 175°C (340°F – 350°F).

https://aimsolder.com/products/solder-paste/nc273lt-low-temperature-solder-paste

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1814397 Tue, 26 Sep 2023 20:25:05 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1814397 The European Union’s Restriction of Hazardous Substances Directive (RoHS) for reduction of lead has broadened bismuth’s use in electronics as a component of …
https://en.m.wikipedia.org/wiki/Bismuth

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1814396 Tue, 26 Sep 2023 20:22:47 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1814396 Why is bismuth less toxic?

Elemental bismuth is nontoxic, but bismuth salts can cause toxicity. Bismuth salts are relatively insoluble, so environmental and occupational exposure is low. Most toxic exposure to bismuth is from consumption, usually from medicinal use.10.6.2019

https://u.osu.edu/helmig-mason.1/2019/06/10/bismuth-heavy-metal-toxicity/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1814395 Tue, 26 Sep 2023 20:21:58 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1814395 Bismuth alloy can be a safer, non-toxic alternative, the look of it can also vary depending upon the processing. Consuming any amount of lead can have adverse effects, whereas bismuth compounds are insoluble and cannot be easily absorbed into the body, making heavy metal poisoning much less likely
https://www.thebismuthsmith.com/bismuth-lures-sinkers-and-bullets-oh-my/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1814394 Tue, 26 Sep 2023 20:21:28 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1814394 Ihmiset kysyvät myös
Is bismuth less toxic than lead?
The substitution of lead with bismuth in the manufacturing industry has drawn growing attention recently in terms of resolving environmental problems caused by heavy metal pollution because bismuth shares many characteristics of lead but is much less toxic to living organisms.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7151860/

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1801761 Fri, 28 Apr 2023 08:47:04 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1801761 SMD prototype soldering
https://www.youtube.com/shorts/5Qiru_fqdj8

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1790768 Fri, 23 Dec 2022 16:08:09 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1790768 https://www.hackster.io/john-bradnam/pcb-reflow-hot-plate-ad6726

]]> By: Tomi Engdahl https://www.epanorama.net/blog/2019/12/15/low-temperature-smd-soldering-paste/comment-page-1/#comment-1763046 Tue, 05 Apr 2022 10:38:16 +0000 http://www.epanorama.net/newepa/?p=185180#comment-1763046 Solder Paste Type Comparison – Surface Mount Process
https://www.youtube.com/watch?v=dwTAi1KSfMQ

Choosing which type of solder paste to use can be a challenge and understanding the difference will be useful to make the decision. For some time type 3 used to be the industry standard but more recently type 4 is more widely used in solder paste printing – For more details see

https://www.surfacemountprocess.com/solder-paste-printing-process.html

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