Is there a pin-compatible replacement for CA45B-B-25V-10UF-K?

No pin-compatible replacements have been verified. While some candidates use the same 'B' case code, their exact dimensions must be confirmed against the target's 3528-19 footprint.

What risks should I check before replacing CA45B-B-25V-10UF-K?

Key risks include package mismatch, higher ESR (Equivalent Series Resistance), wider tolerance, and different capacitor technology (e.g., MLCC vs. Tantalum) which introduces DC bias derating.

CA45B-B-25V-10UF-K Alternatives, Datasheet & Cross Reference | NH

CA45B-B-25V-10UF-K is a 10µF 25V low-ESR polymer tantalum capacitor in a B-case package. Finding a direct replacement requires matching capacitance, voltage, tolerance, ESR, and package size.

AI replacement insight

Electrical riskhigh

Substitutes have higher ESR, different technology, or wider tolerance.

Package riskmedium

Candidate packages are not dimensionally verified against the target footprint.

Can it be replaced directly?

No direct, verified drop-in replacement was identified. All potential substitutes have significant parametric differences or unverified packages.

Best replacement path

Cross-reference to another polymer tantalum capacitor with matching ESR (≤1.4Ω) and B-case (3528) package.

Main risk

The primary risk is increased ESR, which can impact power supply filtering performance and stability.

Recommended alternatives

A ceramic capacitor (MLCC) with similar nominal values, but requires careful engineering review.

View details

Alternative comparison matrix

Feature / factor	CA45B-B-25V-10UF-K	UMK325AB7106KMHP	CA45A-B-25V-10uF-K	CA45-B-25V-10uF-M	Compatibility / risk
Technology	Tantalum Polymer	Ceramic (MLCC)	Tantalum	-	Ceramic (MLCC) / Tantalum — Different technology requires significant review.; CA45A-B-25V-10uF-K: Candidate is standard tantalum, target is polymer.
Package	3528-19	1210 (3225 Metric)	B	B	1210 (3225 Metric) / B — Similar size to B-case, but not identical. Fit must be verified.; CA45A-B-25V-10uF-K: Likely same EIA B-case, but requires verification.; CA45-B-25V-10uF-M: Likely same EIA B-case, but requires verification.
Voltage	25V	50V	25V	25V	50V / 25V — Higher voltage rating is an upgrade.; CA45A-B-25V-10uF-K: matched; CA45-B-25V-10uF-M: matched
Dc Bias Effect	N/A	Unknown	-	-	Unknown — MLCC capacitance drops with DC voltage. Must be evaluated.
Esr	1.4 Ohm	-	3.0 Ohm	6.0 Ohm	3.0 Ohm / 6.0 Ohm — Significantly higher ESR, may impact performance.; CA45-B-25V-10uF-M: Extremely high ESR, major performance downgrade.
Capacitance	10uF	-	10uF	-	10uF — matched
Tolerance	±10%	-	-	±20%	±20% — Wider tolerance may not be acceptable.

Application & sourcing insights

Questions & answers

The best alternative depends on the application's tolerance for higher ESR or different capacitor technology. No direct drop-in replacements were found; all candidates require engineering review.