buy original mosfets - Page 1
Forum section: electronics / general

author: Mugiwara303
author_rank: Contributor
timestamp: October 19, 2016, 12:02:31 pm
content: Hello everyonei want to ask you guys if anyone already bought a mosfet from ebay or aliexpress, they are really cheap and i was wondering if they are like the original ones and having the same datasheet

author: joseph nicholas
author_rank: Frequent Contributor
timestamp: October 19, 2016, 02:30:25 pm
content: If you google the part number on the chinese chip you will get the original manufacturer's specs. If the chip is a clone than there is just no way of knowing what it can do except for testing it.I have bought a few of these off aliexpress and they seem to do the job.Hope this helps.

author: ebclr
author_rank: Super Contributor
timestamp: October 19, 2016, 02:35:27 pm
content: It's no way to know that answer, I already both hundreds of mosfets from aliexpress, all worked on my needs, but there are many vendors not only 1, it's impossible to qualify all vendors and even worse datasheet compliance, If that is your issue pay 10 times more on digikey

author: Mugiwara303
author_rank: Contributor
timestamp: October 19, 2016, 03:06:16 pm
content: because i want the exact specs on the original, not only if they can handle lot of amps but also having fast response time and low drain-source resistance, so i am aiming on the STP30NF10 or the IRFZ44n, i want to use it with an induction heater (ZVS) i found this but i am not sure if they will work, 5 x STP30NF10 for 2.09$ and 10 x IRFZ44N for 1.75$https://www.aliexpress.com/item/30A-100V-P30NF10-STP30NF10-field-effect-transistors/32333780501.htmlhttps://www.aliexpress.com/item/10pcs-free-shipping-IRFZ44N-IRFZ44-IRFZ44NPBF-MOSFET-MOSFT-55V-41A-17-5mOhm-42nC-TO-220-new/32386978106.html

author: sleemanj
author_rank: Super Contributor
timestamp: October 19, 2016, 11:52:11 pm
content: Quote from: Mugiwara303 on October 19, 2016, 03:06:16 pmThen you do not buy from random chinese sources.If you want exact specifications, you buy from a trusted official supply chain, Mouser, Element14, RS Components, Digikey.... not honest john's discount transistors.

author: wraper
author_rank: Unknown
timestamp: October 19, 2016, 11:57:16 pm
content: Quote from: Mugiwara303 on October 19, 2016, 03:06:16 pmcounterfeits on the picture.

author: Mugiwara303
author_rank: Contributor
timestamp: October 20, 2016, 06:57:58 pm
content: Thank you guys for your answers

author: ebclr
author_rank: Super Contributor
timestamp: October 23, 2016, 01:48:35 am
content: Don't assume that they are fakes, this is only a possibility not a reality

author: TerraHertz
author_rank: Super Contributor
timestamp: October 25, 2016, 12:46:50 am
content: Quote from: ebclr on October 23, 2016, 01:48:35 amYes, this. Of all the semiconductor parts I've bought from China, all worked and seemed to be originals, except once. And that was an extreme case, where the part I wanted was an old unobtainium, and I knew from the seller's behavior they were likely offering fakes, and I bought a couple anyway out of curiosity.Also, what's your use-case? Is it commercial, or personal self-designed, single-machine project? If the latter, why not system-design for acceptable consequence of device failure, and use the cheap parts? Don't forget to consider the free postage and lack of hassle in total cost advantage.When you are initially testing it, you'll find out if the parts are up to spec. Learning experience.