EEVblog® Electronics Community Forum
Electronics => Beginners => Topic started by: made2hack on June 27, 2015, 11:15:28 am
-
Hi,
Wanted to get the forum's opinion on Yageo and Royal Ohm as resistor (and other components) manufacturers. I've bought 1k resistors (2512) from Yageo before, they work fine. But I wanted to make a larger purchase from TME and wanted to get your opinion on either Yageo and Royal Ohm.
What about mixing components from different manufacturers? Say I want some 1%/1W 2512 resistors from Royal Ohm and Vishay. Should I mix? Or just keep it same manufacturer?
Thanks
-
Once it fits your requirements (resistance, tolerance, power handling, tempco) it shouldn't matter. I mix them with no problem whatsoever, purchasing in TME as well.
-
Same here. Both of Yageo and Royal Ohm are fine.
Sent from my HTC One M8s using Tapatalk
-
Farnell sells Yageo. They sell RoyalOhm too but rebadged to their own Multicomp brand.
-
k. got it thanx
-
Has anyone ever seen a problem with resistors...?
Considering how insanely cheap they are (£2 for a reel of 10K even at Farnell prices), but considering what a disaster it would be to populate a reel of dodgy ones, I'm surprised I've never heard of any horror stories...
-
Aside from carbon composition wanting to drift high with time, and drift low with overload, no. Only failures are the odd single unit failure, and cracking units from thermal shock. Overloading and overvoltage seems to be the major killer I see. Only resistor I regularly see issues with are fusible resistors, where they will slowly drift high with minor overload or overheating, and might fail as partly open. I have seen 33k fusible resistors in CRT monitors ( in the EHT end cap) go totally open circuit, with no other indication other than a jittering screen as the 25kV arcs around the potted resistor. Was expensive in sets where the resistor was potted into the LOPT ( Phillips), or where you had flashover inside the LOPT in the focus and A1 pots. There you often would grind a slot into the LOPT to cut the internal wire and fill it with GRP resin, then add an old external divider into the EHT section to give those 2 voltages.
-
I have experienced problems with resistors, but they related to unfortunate bad batches, and not to anything systemic.
I do love the production numbers for basic passives. Yageo's blurb about manufacturing refers to multiple sites each making 10s of billions of passives per month.
-
Make sure to check if the resistors have value makings on them. (If you need them)
I got a reel of YAGEO 0805 resistors in a digikey order a while ago and they are unmarked.
I should have been paying more attention to the datasheet :(
I also like to avoid getting any brands that use those ultra thin plastic reels that "feel" like they were made out of recycled milk bottles. They break/crack so easy.
-
good advice.