What risks should I check before replacing CA45A-B-6.3V-100uF-K?

Key risks include package size mismatch, wider tolerance (e.g., ±20% vs ±10%), higher ESR, and different dielectric technology (e.g., Polymer vs. standard MnO2), which can affect circuit performance and reliability.

CA45A-B-6.3V-100uF-K Alternatives, Datasheet & Cross Reference | NH

The CA45A-B-6.3V-100uF-K is a standard 100µF, 6.3V tantalum capacitor in a B-case package. Alternatives should match these key parameters and package dimensions for compatibility.

AI replacement insight

Package riskhigh

Must match B-case (3528) footprint to avoid board changes.

Electrical riskmedium

Ensure tolerance, ESR, and dielectric type are acceptable for the application.

Sourcing risklow

This is a common capacitor value with multiple sources.

Can it be replaced directly?

Direct replacement for CA45A-B-6.3V-100uF-K should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to CA45A-B-10V-100UF-K for a higher voltage rating and better ESR in the same package.

Main risk

The main risk when substituting is mismatched package size, which requires a board redesign. Secondary risks are wider tolerance or higher ESR.

Recommended alternatives

Higher voltage rating (10V) in the same B-case package, offering a direct upgrade path.

View details

Alternative comparison matrix

Feature / factor	CA45A-B-6.3V-100uF-K	CA45A-B-10V-100UF-K	CA45B-B-6.3V-100UF-K	CA45-B-6.3V-100uF-M	Compatibility / risk
Voltage	6.3V	10V	6.3V	6.3V	10V / 6.3V — Higher voltage is a safe upgrade.; CA45B-B-6.3V-100UF-K: matched; CA45-B-6.3V-100uF-M: matched
Package	B	B	3528-19 (Case B)	B	B / 3528-19 (Case B) — Same manufacturer series and case code.; CA45B-B-6.3V-100UF-K: Standard B-case dimensions.; CA45-B-6.3V-100uF-M: matched
Esr	3Ω max	1.2Ω	1.2Ω max	5.0Ω	1.2Ω / 1.2Ω max / 5.0Ω — Lower ESR improves performance.; CA45B-B-6.3V-100UF-K: Lower ESR is an improvement.; CA45-B-6.3V-100uF-M: Higher ESR may increase ripple/heat.
Capacitance	100µF	100µF	-	100µF	100µF — matched; CA45-B-6.3V-100uF-M: matched
Tolerance	±10%	±10%	±10%	±20%	±10% / ±20% — matched; CA45B-B-6.3V-100UF-K: matched; CA45-B-6.3V-100uF-M: Wider tolerance may affect circuit precision.
Dielectric	MnO2 (Standard)	-	Polymer	-	Polymer — Different chemistry affects leakage and failure mode.

Application & sourcing insights

Questions & answers

Verified drop-in options for CA45A-B-6.3V-100uF-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.