What Is Tolerance? Understanding Resistors & Caps

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SUMMARY

Tolerance in resistors and capacitors refers to the allowable deviation from the specified resistance or capacitance value. Common tolerance values are 5%, 10%, and 20%. For example, a 100 Ohm resistor with a 10% tolerance can have an actual resistance ranging from 90 to 110 Ohms. Understanding tolerance is essential for accurately interpreting component specifications and ensuring circuit reliability.

PREREQUISITES
  • Basic knowledge of electrical components, specifically resistors and capacitors.
  • Understanding of Ohm's Law and resistance measurement.
  • Familiarity with electronic color codes for identifying resistor values.
  • Knowledge of circuit design principles and component selection.
NEXT STEPS
  • Research "Resistor color code interpretation" to accurately determine resistor values.
  • Learn about "Capacitor tolerance and its impact on circuit performance."
  • Explore "Ohm's Law applications in circuit analysis" for practical understanding.
  • Investigate "How to measure resistance with a multimeter" for hands-on experience.
USEFUL FOR

Electronics enthusiasts, hobbyists, and professionals involved in circuit design and analysis who need to understand component specifications and tolerances for reliable performance.

trashman
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I usually see it when I'm looking at stuff with with caps and resistors, but have no idea what it is, and i can't respect a value if i don't know what it is. i did a quick google and didnt find anything, maybe I am just not looking hard enough, but i thought i would ask
 
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trashman said:
I usually see it when I'm looking at stuff with with caps and resistors, but have no idea what it is, and i can't respect a value if i don't know what it is. i did a quick google and didnt find anything, maybe I am just not looking hard enough, but i thought i would ask

A resistor has a resistance with a margin of error called tolerance. It is usually 5, 10 or 20%. So, a 100 Ohm resistor with a tolerance of 10% might have an actual resistance anywhere from 90 to 110 Ohms.

http://en.wikipedia.org/wiki/Electronic_color_code#Resistor.2C_capacitor_and_inductor"
 
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