Ersadur 832 vs 842 soldering tips from Ersa: difference and compatibility? - Page 1
Forum section: electronics / general

author: touchatout
author_rank: Contributor
timestamp: April 12, 2023, 05:09:09 pm
content: Hi everyone,Having to replace an Ersa 832SDLF0.8 from the product line of long lasting tipsErsadur, I wonder which it thedifference and compatibility between the 832 and 842 series of tips.From this table, the tips diameters are same as well as soldering stations there are intended for:https://www.distrelec.ch/Web/Downloads/_t/ds/Ersa_832_Series_eng_tds.pdfSo, what does the 842 serie fundamentally has different with the 832 serie?Does possibly the 842 serie offer higher quality than the 832?Are these series compatible with each other?Despite quite intensive search I haven't found out how these product lines differ from each other.Thanks.

author: thm_w
author_rank: Super Contributor
timestamp: April 12, 2023, 09:39:23 pm
content: This site says most tips fit both but some tips may only fit one:https://ts.kurtzersa.com/electronics-production-equipment/soldering-tools-accessories/soldering-desoldering-tips/which-tip-fits-which-tool.htmlWhat iron do you have.

author: touchatout
author_rank: Contributor
timestamp: April 13, 2023, 04:58:34 pm
content: Hi thm_w,Thank you for taking the time to anwer me and the useful link.Myiron is an Ersa CT60/621, connected to anErsa MS 60 station.I cannot find them in the list. I attach some picture.The socket for the iron on the station suggests a TE40 iron 24V 60W (Lötkolben in German), but the one I got with the station is the CT60/621 that I mention.The CT60/621 iron mentions 60W / 350°C, whilst the station goes up to 450 °C.So, I'm not sure if the iron is really the right one for this station, but i must tell it always worked well for me.I did many repair jobs with this station, and have been happy with the Ersa 832SDLF0.8 tip, who proved being very versatile.I have often been using it at quite high temperatures (320°C to 450 °C), mostly because I learned to work quickly with this station but also because the components to desolder are often lead-free.Despite the high temperatures, the second-hand 832SDLF0.8tip lasted 9 years, casual use but used for dozens of jobs however.Currently, I'm looking to replace this tip, and to get one or two larger ones, preferably curved and chiseled ones.A larger tip would allow to heat at lower temperature when soldering or desoldering large components.This would preserve the tip and be better for boards.I am currently using hot air flow to help compensate the relatively thin tip.The "MS 60" station is I assume an predecessor of actual "Analog 60 and 60A".I assume the 832 and 842 series of tip could be both compatible.Could someone from Kurtz Ersa also provide here some clarification about these two series and what makes them different?Thanks everyone.

author: nctnico
author_rank: Super Contributor
timestamp: April 16, 2023, 11:20:14 pm
content: Both 832 and 842 are compatible. It looks like the difference is only in the available shapes; there is no overlap. The 0842ED and 0842CD tips are good for allround work. Size 832VD is nice to solder thicker wires and 832TDLF is good for soldering SMT. I have all these tips in my 'collection'.I also have the tip in your picture but it is not good at getting heat into a regular through hole solder joint so it is no surprise it gives you problems. I only use it when I need to solder in a tiny corner but it can only solder small joints. In general needle shapes tips don't work very well unless you need to make a really tiny connection like soldering super thin enamel wire to a QFN pad.My most used temperature is 330 deg. C (leaded & lead free). Sometimes I up the temperature to 340 but that is mostly to melt enamel from wires in case the enamel doesn't melt at 330 degrees.

author: Neomys Sapiens
author_rank: Super Contributor
timestamp: April 17, 2023, 01:57:35 am
content: The 832 series has significantly more mass and thereby, heat capacity. Whereas the 842 will heat up faster.

author: touchatout
author_rank: Contributor
timestamp: April 19, 2023, 10:29:02 am
content: @ntcnico: Thank you a lot for your expert advice and explanations about which tip is good for which kind of work.This is very valuable advice.@Neomys Sapiens: Thank you for the very useful information about the difference beween Ersadur 832 and 842 series of tips.I assume that 832 is to recommend when there are large heat sinks, and for unsoldering work, whilst 842 would be more suitable to quickly solder small components.

author: tooki
author_rank: Super Contributor
timestamp: April 24, 2023, 11:10:20 am
content: No, a bigger, heavier tip always performs better, even for small components. The downside is that they take longer to heat up, and above all that they may be too large to maneuver into tight spaces.

author: thm_w
author_rank: Super Contributor
timestamp: April 25, 2023, 01:25:09 am
content: I suspect a bigger heavier tip could be slower at recovering, as quoted in this thread:https://www.eevblog.com/forum/reviews/reliable-soldering-station-for-pseudo-hobbyist/msg4812029/#msg4812029But.. may depend on the control algorithm and heater tech.

author: tooki
author_rank: Super Contributor
timestamp: April 25, 2023, 01:19:08 pm
content: But the question was whether a high mass tip is worse for small joints: no, it’s not, because it also needs less recovery because the joint has drawn away less heat.If you’ve reached the point where temperature recovery is a struggle, you probably need an even bigger tip or even more powerful iron.

author: thm_w
author_rank: Super Contributor
timestamp: April 25, 2023, 10:48:20 pm
content: Quote from: tooki on April 25, 2023, 01:19:08 pmOK small joints yeah agreed, thought you meant better for everything.