Download pdf version: Temperature
Coefficients 
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All ceramic capacitors are specified (and guaranteed) with regards to their capacitance value and tolerance at +25°C
(Room Temperature; 77°F)
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All capacitors will change in capacitance value if their temperature departs from room temperature,
as normally will occur through heating or cooling within an electronic
circuit.
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THE GRAPH BELOW SHOWS AN EXAMPLE OF CAPACITANCE VALUE CHANGE OVER
TEMPERATURE |
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THE TABLE BELOW SHOWS THE BREAKDOWN OF THE EIA THREE DIGIT “TC” CODES |
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Common "TC" include:
X5R = ±15% change over -55°C~+85°C ...Standard Tolerance: K = ±10%
X7R = ±15% change over -55°C~+125°C ...Standard Tolerance: K = ±10%
Y5V = +22%/-82% change over -30°C~+85°C ...Standard Tolerance: Z = -20%/+80%
Z5U = +22%/-56% change over -10°C~+85°C ...Standard Tolerance: M = ± 20%
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Exception to the above system is Ultra-Stable "TC": COG = NPO
NPO = 0±30PPM/°C over -55°C ~ + 125°C
...Standard Tolerance: J = ±5%
NPO = Negative
Positive Zero
[Originated from Military Standards] |
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| Component Characteristics Substitution Guide |
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"TC"
- Temperature Coefficient : (Ceramic Capacitors)
 Substitution Rule: A component with a more stable (better) temperature coefficient (TC) can replace a less temperature stable TC component.
i.e...an X7R ceramic can replace X5R, Z5U or Y5V ceramic part
i.e...an NPO ceramic can replace a X5R, X7R or Z5U or Y5V ceramic |
NIC capacitor substitution guideline can be found at link
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| Temperature
Coefficient Characteristics Curves |
NPO = 0±30PPM/°C over -55°C ~ + 125°C
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X7R = ±15% change over
-55°C~+125°C
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Z5U = +22%/-56% change over
-10°C~+85°C
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Y5V = +22%/-82% change over
-30°C~+85°C
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