What risks should I check before replacing CA45-B-20V-22UF-M?

Before replacing, check three main risks: 1) Voltage rating must be equal or greater (e.g., 20V or 25V). 2) Package dimensions and land pattern must match. 3) Changes in technology (e.g., to Polymer or MLCC) can drastically alter ESR, which may affect circuit stability and require redesign.

CA45-B-20V-22UF-M Alternatives, Datasheet & Cross Reference | NH

Finding a substitute for the XY CA45-B-20V-22UF-M 22µF 20V tantalum capacitor involves matching its B-case package and key electricals. Alternatives exist with similar specs or upgraded performance, but require careful review.

AI replacement insight

Package risklow

Several candidates match the B-case (3528) package.

Electrical riskmedium

Alternatives may have different ESR or be a different technology (Polymer), requiring circuit analysis.

Can it be replaced directly?

Direct replacement for CA45-B-20V-22UF-M should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

The most direct path is CA45A-B-20V-22UF-K from the same manufacturer family, offering identical key parameters with improved tolerance.

Main risk

The main risk is substituting with a part of a different technology (e.g., Polymer) without considering the impact on ESR, which can affect circuit stability.

Recommended alternatives

Strong functional match with identical key specs and improved tolerance from the same manufacturer family.

View details

Alternative comparison matrix

Feature / factor	CA45-B-20V-22UF-M	CA45A-B-20V-22UF-K	T521B226M025ATE100	Compatibility / risk
Package	B-Case	B-Case (3528-19)	B-Case (3528-21)	B-Case (3528-19) / B-Case (3528-21) — Likely identical form factor.; T521B226M025ATE100: Likely identical form factor.
Voltage	20V	20V	25V	20V / 25V — matched; T521B226M025ATE100: Higher voltage provides more margin.
Capacitance	22µF	22µF	-	22µF — matched
Tolerance	±20%	±10%	-	±10% — Tighter tolerance is a minor upgrade.
Esr	2.0 Ω	2.0 Ω	100mΩ	2.0 Ω / 100mΩ — ESR matches target specification.; T521B226M025ATE100: Significantly lower ESR requires circuit review.
Technology	Tantalum (MnO2)	-	Polymer Tantalum	Polymer Tantalum — Different dielectric may affect performance.

Application & sourcing insights

Questions & answers

Verified drop-in options for CA45-B-20V-22UF-M 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.