Hello there,
A while back i had purchased some 1/4 watt 1 percent resistors at a discount as i bought one half of the entire purchase going in halves with someone else. I got a lot of resistors for very low price, and lots and lots of values, the half order takes up a whole parts box by itself.
About two weeks ago i noticed that the leads are strongly attracted to a magnet, which means they are steel or other iron content metal, plated with tin i think. The values are close enough to the color coded value as tested with an Ohm meter.
So the question is, does anyone have any information on resistors with steel leads? For example, skin effect in steel will be MUCH higher than in copper because steel is very magnetically active, whereas copper is not. The up side to this though is that the resistors are stronger when mounted, so they can withstand more extreme shock and vibrations. The down side is at higher frequencies there has to be skin effect that could alter the characteristics in a circuit that might change dramatically with higher resistance at higher frequencies. I suppose this could be minimal for certain DC value AC value ratios and short cut lead lengths, but i cant remember that details from long ago.
So any information regarding the things to watch out for using steel lead resistors would help greatly as i have a LOT of these resistors and i would hate to throw them all in the garbage.
A while back i had purchased some 1/4 watt 1 percent resistors at a discount as i bought one half of the entire purchase going in halves with someone else. I got a lot of resistors for very low price, and lots and lots of values, the half order takes up a whole parts box by itself.
About two weeks ago i noticed that the leads are strongly attracted to a magnet, which means they are steel or other iron content metal, plated with tin i think. The values are close enough to the color coded value as tested with an Ohm meter.
So the question is, does anyone have any information on resistors with steel leads? For example, skin effect in steel will be MUCH higher than in copper because steel is very magnetically active, whereas copper is not. The up side to this though is that the resistors are stronger when mounted, so they can withstand more extreme shock and vibrations. The down side is at higher frequencies there has to be skin effect that could alter the characteristics in a circuit that might change dramatically with higher resistance at higher frequencies. I suppose this could be minimal for certain DC value AC value ratios and short cut lead lengths, but i cant remember that details from long ago.
So any information regarding the things to watch out for using steel lead resistors would help greatly as i have a LOT of these resistors and i would hate to throw them all in the garbage.