Is there a pin-compatible replacement for CL21B335KAFNFNE?

Yes, many 0805 capacitors are pin-compatible, including several candidates found. However, none are perfect electrical matches. You must verify the dielectric (X7R), voltage (≥25V), and temperature range (to 125°C) for your application.

What risks should I check before replacing CL21B335KAFNFNE?

The main risk is using a capacitor with a different dielectric, such as X5R or X6S. This will reduce the maximum operating temperature (e.g., to 85°C) and can change how the capacitance behaves with temperature and voltage.

CL21B335KAFNFNE Alternatives, Datasheet & Cross Reference | Samsung Electro-Mechanics

CL21B335KAFNFNE is a general-purpose 3.3µF, 25V, X7R ceramic capacitor in a standard 0805 package. It is widely used for decoupling and filtering in various electronic circuits.

AI replacement insight

Electrical riskmedium

Substituting with X5R or X6S dielectric reduces temperature range and may alter capacitance vs. temperature/DC bias performance.

Package risklow

The 0805 package is standardized, making physical replacement straightforward.

Can it be replaced directly?

No direct drop-in replacement with identical specifications was found. All close alternatives require reviewing the dielectric type and operating temperature range.

Best replacement path

Search for a 3.3µF, 25V (or higher), X7R capacitor in an 0805 package. If unavailable, an X5R part may work if the operating temperature stays below 85°C.

Main risk

Dielectric mismatch, leading to a reduced operating temperature range and potentially different capacitance stability.

Recommended alternatives

Parametric alternative with matching voltage but a lower max operating temperature (85°C).

View details

Alternative comparison matrix

Feature / factor	CL21B335KAFNFNE	0805X335K250CT	CGA4J3X5R1H335KT0Y0N	C2012X6S1H335KT000E	Compatibility / risk
Package	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric) — Package size matches.; CGA4J3X5R1H335KT0Y0N: Package size matches.; C2012X6S1H335KT000E: Package size matches.
Voltage	25V	25V	50V	50V	25V / 50V — Voltage rating matches.; CGA4J3X5R1H335KT0Y0N: Higher voltage rating provides more margin.; C2012X6S1H335KT000E: Higher voltage rating provides more margin.
Dielectric	X7R	X5R	X5R	X6S	X5R / X6S — Different dielectric material.; CGA4J3X5R1H335KT0Y0N: Different dielectric material.; C2012X6S1H335KT000E: Different dielectric with worse stability (±22% vs ±15%).
Temperature	-55°C to 125°C	-55°C to 85°C	-55°C to 85°C	-55°C to 105°C	-55°C to 85°C / -55°C to 105°C — Reduced max operating temperature due to X5R dielectric.; CGA4J3X5R1H335KT0Y0N: Reduced max operating temperature due to X5R dielectric.; C2012X6S1H335KT000E: Reduced max operating temperature due to X6S dielectric.
Application	General	-	Automotive	-	Automotive — Candidate is automotive grade.

Application & sourcing insights

Questions & answers

The best alternatives found, like Walsin's 0805X335K250CT, match in capacitance, voltage, and package, but use an X5R dielectric, limiting the max temperature to 85°C instead of 125°C. This requires engineering review.