Hi,
Anyone tried using SMD for Emitter resistors?
I found this on Mouser (https://www.mouser.sg/datasheet/2/303/RWS710_1_12_41-768831.pdf). Footprint is not that small, but the derating specs looks better than most THT and the ppm/C not bad either. Price is decent too.
I’m planning to build an Elliott P3 amplifier so it’s approx 60W and I never need anything bigger honestly. I know many advocate Mills MRA for their non-inductive properties, but they are expensive and selection is limited (at least where I am)
Cheers everyone and stay cool in this hot summer.
Anyone tried using SMD for Emitter resistors?
I found this on Mouser (https://www.mouser.sg/datasheet/2/303/RWS710_1_12_41-768831.pdf). Footprint is not that small, but the derating specs looks better than most THT and the ppm/C not bad either. Price is decent too.
I’m planning to build an Elliott P3 amplifier so it’s approx 60W and I never need anything bigger honestly. I know many advocate Mills MRA for their non-inductive properties, but they are expensive and selection is limited (at least where I am)
Cheers everyone and stay cool in this hot summer.
Quite overkill for a emitter resistor ! Just a (.47R) through-hole pair of metal oxide 2W or 2 thick film SMD is quite sufficient.
I use pairs of .47's , they work well.
Oh , what I use ... from my BOM - https://www.mouser.com/ProductDetai...R02FS0201009KR500?qs=AQlKX63v8RswniMyZvvcFw==
OS
I use pairs of .47's , they work well.
Oh , what I use ... from my BOM - https://www.mouser.com/ProductDetai...R02FS0201009KR500?qs=AQlKX63v8RswniMyZvvcFw==
OS
Oh , the thick film .... https://www.mouser.com/ProductDetai...LTR100JZPFLR470?qs=Y0Uzf4wQF3nS9LD7VDU%2Brw==
What do you think of these series?
https://www.distrelec.be/nl/smd-wee...lenh%C3%BCtte&filter_Vermogenswaarde%7E%7EW=5
https://www.distrelec.be/nl/smd-wee...lenh%C3%BCtte&filter_Vermogenswaarde%7E%7EW=5
Hi Bensen,
I saw that but it said “current sense” resistor, I’m not sure if it can be used as a regular resistor. If it can be used as a regular resistor then it opens up a lot more options as they are small and high power ones.
I saw that but it said “current sense” resistor, I’m not sure if it can be used as a regular resistor. If it can be used as a regular resistor then it opens up a lot more options as they are small and high power ones.
It doesn't matter at all that it's called a "current sense" resistor, it's marked because it's simply good for that (unlike any resistor whose values and properties are not as stable). It can also be used as an emitter resistor