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Old 6th August 2012, 07:22 PM   #1
Einric is offline Einric  United States
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Default Metal Film or Thin Film??

Which is better if you had the choice?
Metal or Thin Film resistors?
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Old 6th August 2012, 07:25 PM   #2
SY is offline SY  United States
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Most metal film resistors are thin film. And proper resistor choice depends on what it's being used for- there's no "universal best."
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Old 6th August 2012, 07:52 PM   #3
AndrewT is offline AndrewT  Scotland
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In SMD, there are thick film and thin film resistors.
The performance seems to be different.
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Old 6th August 2012, 10:58 PM   #4
SY is offline SY  United States
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Thick film and metal film are quite different- metal film resistors use thin film techniques and materials. Perhaps Einric was thinking of that and typoed?
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Old 6th August 2012, 11:17 PM   #5
mlise is offline mlise  United States
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The thin film resistors tend to be noisier than thicker or bulk resistors. Wire wound will be the quietest, but could have some (generally negligible) parasitic inductance.

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Old 7th August 2012, 01:03 AM   #6
Einric is offline Einric  United States
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Mainly when I'm looking for resistors (My Simple P-P for example), I am looking for Metal Film resistors.
I have found the same values and tolerances in Thin Film with the DigiKey sort functions.
What would be the advantages of going either way.
The Simple P-P specs. Metal Film, would there be a downside to Thin Film (or Thick & Wirewound)?
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Old 7th August 2012, 01:27 AM   #7
jcx is offline jcx  United States
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metal film are so cheap in thru hole parts today I would consider them the default

in smt and matched arrays NiCr thin film can have lower tc, but the generally lower pwr rating can waste that potential advantage

bulk metal foil is the "ultimate" for tc, stability, low excess noise, measureable distortion - just cost too much
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Old 7th August 2012, 03:13 AM   #8
Einric is offline Einric  United States
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What is "TC"?
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Old 7th August 2012, 04:01 AM   #9
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Quote:
Originally Posted by Einric View Post
What is "TC"?
Temperature coefficient(?)

Dale
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Old 7th August 2012, 04:11 AM   #10
Einric is offline Einric  United States
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Is that the ppm stat that is listed?
How does it play a role? Stability at high temp?
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