On Wednesday, 11 December 2019 10:18:43 UTC, bilou wrote:
On 11/12/2019 03:07, Fox's Mercantile wrote:

Allen Bradly, and most other carbon composition resistor
manufacturers used a brown composition body.
When film resistors started to become popular, they had
white bodies.
The only other color I've seen is a dull red, Usually on 2%
resistors.

Of course, wire wound resistors had colors all over the
map. But then they had the values printed on them. No color
code.


Black color is the right choice for anything expected to
dissipate energy.
Integrated circuits is a good example.
smc components another.

By the time it's hot enough for that to matter it's already toast. The other colours are close to black in IR performance.


NT