Is china power resistors are good or bad? - Page 1
Forum section: electronics / projects

author: 001
author_rank: Super Contributor
timestamp: September 26, 2019, 07:09:43 pm
content: Is china power resistors are good or bad?All of them looks smaller when domestic types of same ratingsCheck ithttps://www.ebay.com/itm/2Pcs-100W-16-Ohm-5-Aluminum-Shell-Wire-Wound-Resistors-Green-B1M5/183684992199?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D40719%26meid%3D2ef1fe234a9a48f6b385e0bd002c08de%26pid%3D100675%26rk%3D3%26rkt%3D15%26sd%3D401514561019%26itm%3D183684992199%26pmt%3D1%26noa%3D1%26pg%3D2481888&_trksid=p2481888.c100675.m4236&_trkparms=pageci%3Adcb5b8c3-e090-11e9-a4a0-74dbd1806929%7Cparentrq%3A6ef873ce16d0a9e3aa9876c1ffcb1db1%7Ciid%3A1

author: coppice
author_rank: Super Contributor
timestamp: September 26, 2019, 07:13:57 pm
content: China is not a manufacturer. Some of the manufacturers in China are good and some are bad, just like any other country. You need to look in detail at the specific source of the part.

author: 001
author_rank: Super Contributor
timestamp: September 26, 2019, 07:23:42 pm
content: Quote from: coppice on September 26, 2019, 07:13:57 pmYeaBut ebay sellers didn provide me with itWhat is TYPICAL for this resistortype? Can I use it as brake resistors? What about inductance?

author: coppice
author_rank: Super Contributor
timestamp: September 26, 2019, 07:26:32 pm
content: They are usually a coil of resistance wire, potted in ceramic, so they have significant inductance.

author: 001
author_rank: Super Contributor
timestamp: September 26, 2019, 08:08:07 pm
content: Quote from: coppice on September 26, 2019, 07:26:32 pmThanx a lotAnd what about this type?https://www.ebay.com/itm/300W-500W-1000W-Aluminum-Housing-Wirewound-Braking-Load-Resistor-for-VFD/303101393993?hash=item4692403c49:m:mz1sTWOdJMjy2s5GgqgJoMQ

author: Bassman59
author_rank: Super Contributor
timestamp: September 26, 2019, 08:15:22 pm
content: Quote from: 001 on September 26, 2019, 07:23:42 pmWell, your first mistake is buying parts from eBay.

author: 001
author_rank: Super Contributor
timestamp: September 26, 2019, 08:47:56 pm
content: Quote from: Bassman59 on September 26, 2019, 08:15:22 pmI dont know local parts sellers here

author: magic
author_rank: Super Contributor
timestamp: September 27, 2019, 06:28:44 am
content: Ask the penguinsAnd there is a whole world of professional suppliers who offer international shipping.editEven LCSC, if you want stuff from China. The difference is, you know who made the part and if you like it or don't, you can decide to order more of the same or something else in the future. Buying on eBay is pure roulette.

author: Ysjoelfir
author_rank: Frequent Contributor
timestamp: September 27, 2019, 07:14:51 am
content: Quote from: 001 on September 26, 2019, 08:08:07 pmDo you even read the things you link to?300W 500W 1000W Aluminum HousingWirewoundBraking Load Resistor for VFD

author: 001
author_rank: Super Contributor
timestamp: September 27, 2019, 01:11:10 pm
content: Quote from: Ysjoelfir on September 27, 2019, 07:14:51 amWHAT? Bifilar wirewound can provide about zero inductance

author: Ysjoelfir
author_rank: Frequent Contributor
timestamp: September 27, 2019, 06:03:40 pm
content: And you think that you get a >=300W Resistor with bifilar windings for under 20$? Sorry to disappoint you.

author: GigaJoe
author_rank: Frequent Contributor
timestamp: September 27, 2019, 06:29:38 pm
content: Offtopic: but ... one day i pass by garage sale , an old man selling some old de-soldering parts, he was so convinced that old 90-x can of foil caps cost 100x more then $5 ... shaking some dusty old parts catalogcost of making parts are nothing now .... (it up when spec's need to follow) i have such green resistor in 20W 10ohm only type, it blow up when i push over 120W from audio amplifier to the single resistoreven 60W it holds with heatsink ...

author: MosherIV
author_rank: Super Contributor
timestamp: September 27, 2019, 08:12:05 pm
content: Have you ever seen how those wire wound power resistor blow?Well here you goThat by the way is NOT a cheap chinese part, it is a quality ARCOL part commonly used in automotive industry.My colleague was also surprised to see it blow that way, he told me they normally just shoot the wire and terminal out of the sides at high velocity !

author: grifftech
author_rank: Frequent Contributor
timestamp: September 27, 2019, 08:26:34 pm
content: Electric stove element.