What risks should I check before replacing CA45-B-20V-10uF-K?

Before replacing, first ensure the substitute's voltage rating is 20V or higher. Second, check if its ESR and tolerance meet your circuit's requirements. Finally, confirm the package is an EIA B-case (3528) for a drop-in fit.

CA45-B-20V-10uF-K Alternatives, Datasheet & Cross Reference | NH

Reviewing substitutes for the CA45-B-20V-10uF-K, a 10uF 20V B-case tantalum capacitor. Key evaluation criteria for replacements include voltage rating, ESR, tolerance, and package compatibility.

AI replacement insight

Electrical riskhigh

Using a part with lower voltage is unsafe. Higher ESR or wider tolerance can cause circuit malfunction.

Package riskmedium

While B-case is standard, non-B-case parts require a board redesign.

Can it be replaced directly?

Direct replacement for CA45-B-20V-10uF-K should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to a Tantalum Polymer capacitor like CA45B-B-25V-10UF-K for lower ESR and higher voltage, but verify application suitability.

Main risk

The main risk is using a part with a lower voltage rating. Secondary risks include higher ESR or wider tolerance affecting circuit performance.

Recommended alternatives

Potential upgrade with higher voltage (25V), lower ESR (1.4Ω), and same B-case package.

View details

Alternative comparison matrix

Feature / factor	CA45-B-20V-10uF-K	CA45B-B-25V-10UF-K	CA45A-B-25V-10uF-K	CA45-B-25V-10uF-M	Compatibility / risk
Voltage	20V	25V	25V	25V	25V — Higher voltage provides more design margin.; CA45A-B-25V-10uF-K: Higher voltage rating provides more margin.; CA45-B-25V-10uF-M: Higher voltage rating is an advantage.
Esr	2.0 Ω	1.4 Ω	3.0 Ω	6.0 Ω	1.4 Ω / 3.0 Ω / 6.0 Ω — Lower ESR improves efficiency and performance.; CA45A-B-25V-10uF-K: Higher ESR may impact circuit performance.; CA45-B-25V-10uF-M: Significantly higher ESR will impact performance.
Dielectric	Solid Tantalum (MnO2)	Tantalum Polymer	-	-	Tantalum Polymer — Polymer offers lower ESR but different leakage/failure modes.
Package	B (3528)	B (3528-19)	B	B	B (3528-19) — Package is form-fit compatible.; CA45A-B-25V-10uF-K: Same manufacturer package code.; CA45-B-25V-10uF-M: Package is form-fit compatible.
Tolerance	±10%	-	±10%	±20%	±10% / ±20% — Tolerance is identical.; CA45-B-25V-10uF-M: Wider tolerance may not be suitable for precision applications.

Application & sourcing insights

Questions & answers

Verified drop-in options for CA45-B-20V-10uF-K are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.