Is there a pin-compatible replacement for CA45B-B-6.3V-100UF-K?

Yes, CA45A-B-10V-100UF-K is a potential pin-compatible replacement. It shares the same B-Case (3528) package and 2-pin layout. Always verify your board's footprint.

What risks should I check before replacing CA45B-B-6.3V-100UF-K?

Before replacing, check three key factors: 1) Package: Ensure the replacement is a B-Case (3528). 2) ESR: The target is a low-ESR part (1.2Ω); a higher ESR can affect circuit stability. 3) Tolerance: Ensure the replacement's tolerance (e.g., ±10%) is acceptable.

CA45B-B-6.3V-100UF-K Alternatives, Datasheet & Cross Reference | NH

CA45B-B-6.3V-100UF-K is a 100µF, 6.3V low-ESR tantalum polymer capacitor in a 3528 B-Case. Key considerations for substitutes include matching the B-Case package, low ESR, and capacitance.

AI replacement insight

Package riskhigh

Many alternatives are in different case sizes (A, C, D) and are not drop-in replacements for the B-Case.

Electrical riskmedium

Substitutes may have higher ESR or wider tolerance, impacting circuit performance. Verify ESR for your application.

Can it be replaced directly?

CA45A-B-10V-100UF-K is a potential drop-in upgrade. CA45A-B-6.3V-100uF-K has the same form factor but significantly higher ESR, requiring careful evaluation.

Best replacement path

Use CA45A-B-10V-100UF-K, which offers a higher voltage rating in the same package with matching ESR.

Main risk

The main risks are package mismatch and increased ESR. The target is a low-ESR polymer type; many alternatives are standard tantalum with higher ESR.

Recommended alternatives

A higher voltage upgrade in the same package with matching key parameters.

View details

Alternative comparison matrix

Feature / factor	CA45B-B-6.3V-100UF-K	CA45A-B-10V-100UF-K	CA45A-B-6.3V-100uF-K	Compatibility / risk
Package	3528-19 (Case B)	B-Case	B	B-Case — Package matches target's B-Case (3528).; CA45A-B-6.3V-100uF-K: Package matches target's B-Case (3528).
Voltage	6.3V	10V	6.3V	10V / 6.3V — Higher voltage rating provides more design margin.; CA45A-B-6.3V-100uF-K: Voltage matches target.
Esr	1.2 Ω	1.2 Ω	3 Ω	1.2 Ω / 3 Ω — ESR matches target's low-ESR requirement.; CA45A-B-6.3V-100uF-K: Significantly higher ESR will impact performance.
Tolerance	±10%	±10%	-	±10% — Tolerance matches target.
Technology	Tantalum Polymer	-	Standard Tantalum	Standard Tantalum — Different capacitor technology (MnO2 vs Polymer).

Application & sourcing insights

Questions & answers

The best alternative is CA45A-B-10V-100UF-K. It matches the package, capacitance, tolerance, and ESR, while offering a higher voltage rating for increased reliability.