Chip Capacitor Types: How NP0, X7R, X5R, Z5U, and Y5V Compare

Two multilayer ceramic capacitors that look identical can behave completely differently in the same circuit, and the difference is hidden in a short code on the datasheet: NP0, X7R, Z5U, Y5V. These are not model names. Each is a promise about how much the capacitance will change with temperature and voltage. Read the code correctly and you already know whether a part belongs in a precision timing circuit or only in a bypass role near a power pin.

This guide compares the five chip capacitor types a buyer actually meets — NP0, X7R, X5R, Z5U, and Y5V — with their real temperature characteristics and typical capacitance ranges, then gives a selection rule for each circuit. If you first need the physical picture, our article on the structure and function of chip capacitors explains how the multilayer stack is built.

Learn to read the dielectric code first

The EIA code on a class 2 ceramic is three characters: the first letter is the lowest operating temperature, the middle digit is the highest, and the last letter is the maximum capacitance change across that range. Once the pattern is clear, every code decodes itself.

Code part	Meaning	Examples
First letter (low temp)	Lowest rated temperature	X = -55 °C, Y = -30 °C, Z = +10 °C
Middle digit (high temp)	Highest rated temperature	5 = +85 °C, 7 = +125 °C
Last letter (change)	Max capacitance change over range	R = ±15%, U = +22% / -56%, V = +22% / -82%

So X7R means -55 °C to +125 °C with no more than ±15% capacitance change, and Y5V means -30 °C to +85 °C with a swing from +22% to -82%. The difference between “stable” and “usable” grade is right there in the last letter.

Two families: class 1 and class 2

Chip capacitor dielectrics split into two families. Class 1 (NP0/C0G) uses a paraelectric material with a very low dielectric constant: it is stable, low-loss, and drifts almost nothing with temperature, but stores little capacitance per volume. Class 2 (X7R, X5R, Z5U, Y5V) uses ferroelectric ceramics with high dielectric constants, so it packs far more capacitance into the same footprint — at the cost of nonlinear, temperature-dependent behaviour and higher losses. Within class 2, X5R and X7R are the stable grade; Z5U and Y5V are the usable grade. The dielectric material itself is covered in depth in our companion article on chip capacitors and their dielectric materials.

NP0/C0G: the precision class

NP0 and C0G are the same material under two names — C0G is the EIA designation, NP0 the older military-style name. Its capacitance change is 0 ±30 ppm/°C from -55 °C to +125 °C, drift or hysteresis stays under ±0.05%, and capacitance shifts less than ±0.3% with frequency. The trade-off is capacitance density: NP0 parts rarely exceed about 10 nF. Our capacitance range for NP0 by package and rated voltage:

Package	DC = 50V	DC = 100V
0805	0.5—1000pF	0.5—820pF
1206	0.5—1200pF	0.5—1800pF
1210	560—5600pF	560—2700pF
2225	1000pF—0.033µF	1000pF—0.018µF

Use NP0 for oscillator tank circuits, resonator coupling, high-frequency coupling, and anywhere a capacitance value must stay put.

X7R: the workhorse

X7R is the temperature-stable workhorse. It holds ±15% from -55 °C to +125 °C — with the caveat that the change is nonlinear — and it ages about 1% per decade, roughly 5% over ten years. Against the same volume as NP0, X7R stores far more capacitance, from roughly 100 pF up to 2.2 µF depending on package and voltage. Our X7R range by package:

Package	DC = 50V	DC = 100V
0805	330pF—0.056µF	330pF—0.012µF
1206	1000pF—0.15µF	1000pF—0.047µF
1210	1000pF—0.22µF	1000pF—0.1µF
2225	0.01µF—1µF	0.01µF—0.56µF

X7R is the default for DC blocking, coupling, and bypass in industrial circuits where a moderate capacitance swing is acceptable.

X5R: the budget workhorse

X5R offers the same ±15% change as X7R but over a narrower range, -55 °C to +85 °C. Its high dielectric constant gives the largest practical capacitance values of the stable grade, which is why 10 µF and 22 µF chip capacitors in 0805 and 1206 are almost always X5R or X7R. Choose X5R when you need the capacitance more than the extra temperature headroom.

Z5U and Y5V: capacitance when stability matters less

Z5U and Y5V trade away temperature stability for capacitance density. Z5U operates from +10 °C to +85 °C with +22% / -56% change and a maximum dielectric loss of 4%; its small size, low ESL, and low ESR make it a frequent choice for decoupling near room temperature. Y5V goes further: -30 °C to +85 °C, +22% / -82% change, maximum loss 5%, yet its very high dielectric constant lets a small 0805 package reach values up to about 4.7 µF. Ranges we offer:

Z5U package	DC = 25V	DC = 50V	Y5V package	DC = 25V	DC = 50V
0805	0.01—0.12µF	0.01—0.1µF	0805	0.01—0.39µF	0.01—0.1µF
1206	0.01—0.33µF	0.01—0.27µF	1206	0.01—1µF	0.01—0.33µF
1210	0.01—0.68µF	0.01—0.47µF	1210	0.1—1.5µF	0.01—0.47µF
2225	0.01—1µF	0.01—1µF	2225	0.68—2.2µF	0.68—1.5µF

Why the printed value is not the in-circuit value

Class 2 chip capacitors lose capacitance as DC bias rises, because the ferroelectric dielectric is partially depolarised by the applied field. The effect grows with the dielectric constant: an X7R part can lose 20% or more of its rated capacitance at half its rated voltage, and Y5V or Z5U lose considerably more. A 10 µF X5R in an 0805 package may deliver barely 6 µF at its working voltage. NP0 is essentially immune, which is one more reason it is chosen wherever the value must be real. On top of bias, class 2 parts age: X7R drifts about 1% per decade and Y5V up to about 5% per decade, and both shift with temperature within their stated limits. The practical answer is to derate — pick a capacitor whose rated voltage sits comfortably above the rail (1.5× to 2×), assume 20% to 30% less effective capacitance in the design, or move to NP0 when the value genuinely cannot move. When a supplier quotes a capacitance, ask whether it is the nominal value at 0 V or the effective value at your working bias; the two are rarely the same number.

Choosing between them

Start with the requirement, then let the code fall out. Need a stable value for a timing or RF circuit? NP0, and accept the smaller capacitance. Need a general-purpose part for coupling and bypass in an industrial board? X7R, or X5R if you need more capacitance and can live with the lower top temperature. Only choosing a decoupling capacitor where temperature swings are small and capacitance density wins? Z5U or Y5V is defensible. Two practical cautions for class 2 types: they lose capacitance under DC bias, sometimes 20% or more at half rated voltage, and they age with time. Where those effects matter, the applications article on ceramic chip capacitor uses gives more context.

What to check when buying

Manufacturers name the same dielectrics differently, so verify the EIA code and the datasheet rather than trusting a familiar-looking label. When you source, confirm three things: the dielectric class and temperature characteristic, the dielectric loss limit, and the capacitance at the actual working voltage after derating. Our multilayer ceramic capacitor range lists NP0, X7R, X5R, Z5U and Y5V parts by package and voltage, and the wider SMD capacitor category covers the rest of the surface-mount line. Send us your dielectric, package, and working voltage, and we will confirm the loss and tolerance on the actual part before quoting.