[Amps] 47 Ohm 5 watt
nss at mwt.net
Sat Aug 11 12:51:24 EDT 2018
Yes temp will be an issue. these are for the parasitic things in the
tops of 3-500Z's in a SB-220 amp.
On 8/9/2018 12:54 PM, Bryan Swadener via Amps wrote:
> Be careful of the temperature derating. The datasheet says they start to derate at 25°C and derate to zero at 155°C. Caddock and others produce similar power resistors. Kanthal/Globar produces suitable single units but, I've not heard of a source for small quantities. However, a coupla 100Ω/2W carbon composition resistors can be used in parallel. Ebay seller 'bigsmythe74' has new old stock Allen-Bradley but, he wants $4/each. Sorting by price, I see he has 91Ω/2W available for $1.25 each (http://www.ebay.com/itm/400003772794). Add $3.50/order shipping to USA.
> vy 73, Bryan WA7PRC
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