Looking for PTC 1.0KV thermistor, a suitable replacement for YS4020, aliexpress? - Page 1
Forum section: electronics / beginners

author: white_rex
author_rank: Newbie
timestamp: April 03, 2024, 02:33:18 pm
content: Hi,I need a newPTC 1.0KV thermistorfor my Fluke DMM, I know the YS4020 would be fine but it looks like it's not available right now:https://www.digikey.com/en/products/detail/amphenol-advanced-sensors/YS4020/4250581I found this on Aliexpress, it's only about $5 for 20 pieces (MZ8 8mm 1K):https://www.aliexpress.us/item/3256802067024577.html?pdp_npi=4%40dis%21USD%21US%20%240.87%21US%20%240.83%21%21%210.87%210.83%21%40211b613117121543747238295ec41a%2112000019660526901%21sh%21US%210%21&spm=a2g0o.store_pc_allItems_or_groupList.new_all_items_2007558818378.1005002253339329&gatewayAdapt=glo2usaI have no experience in ordering any electronics from Aliexpress, what do you think, is it worth to try that one? I don't need it this week.PS. I am currently in Europe which means shipping from digikey is expansive.Thanks!

author: Terry Bites
author_rank: Super Contributor
timestamp: April 03, 2024, 03:53:37 pm
content: Farnell (Newark) are active in the EU. Do you know where you are in Europe?eg Belgium, Finland, Germany, Italy.....https://be.farnell.com/en-BE/amphenol-advanced-sensors/ys4020/ptc-thermistor-1-1k-radial-leaded/dp/3238387?ost=ys4020https://fi.farnell.com/amphenol-advanced-sensors/ys4020/ptc-thermistor-1-1k-radial-leaded/dp/3238387?pf_custSiteRedirect=truehttps://de.farnell.com/amphenol-advanced-sensors/ys4020/ptc-thermistor-1-1k-radial-bedrahtet/dp/3238387?pf_custSiteRedirect=truehttps://it.farnell.com/amphenol-advanced-sensors/ys4020/termistore-ptc-1-1k-conduttori/dp/3238387?pf_custSiteRedirect=true

author: white_rex
author_rank: Newbie
timestamp: April 03, 2024, 04:07:55 pm
content: Thanks for your response,I am in Hungary right now, I'll check it,anyway I really would like to know opinion about stuff from Aliexpress as I linked above, what do you think about that?

author: Gyro
author_rank: Super Contributor
timestamp: April 03, 2024, 08:34:37 pm
content: Personally, I wouldn't touch something from Ali for anything safety related in a Fluke [Edit:, which it is].

author: bdunham7
author_rank: Super Contributor
timestamp: April 03, 2024, 08:40:02 pm
content: Quote from: white_rex on April 03, 2024, 04:07:55 pmDo their specifications match the YS4020? I don't see any maximum voltage rating and I'll bet it isn't 1000VRMS. Also, the 1.1k cold resistance is important. Look at the YS4020 datasheet--any substitute should match that. However, AFAIK there is no substitute for the YS4020.

author: thm_w
author_rank: Super Contributor
timestamp: April 03, 2024, 10:21:52 pm
content: Quote from: bdunham7 on April 03, 2024, 08:40:02 pmhttp://www.focusens.com/data/upfile/1504/2015040722363478.pdfMax voltage 25V according to this site.edit: oops mz6, mz8 linked below.

author: white_rex
author_rank: Newbie
timestamp: April 04, 2024, 10:08:13 am
content: Thank you for all your posts!Max voltage 265V according to this site (Over Voltage Withstanding 500V), which is still far away from 1000Vhttps://www.fuse-china.com/quality-14021974-mz8-ptc-type-thermistorSo anyway it looks like I need to order YS4020.