Is there a pin-compatible replacement for CA45-B-6.3V-100uF-M?

Yes, CA45A-B-6.3V-100uF-K is a pin-compatible replacement. It shares the same 'B' case package, 6.3V rating, and 100µF capacitance, making it suitable as a drop-in replacement.

What risks should I check before replacing CA45-B-6.3V-100uF-M?

Before replacing, first verify the package size; ensure the replacement is a 'B' case (3528). Second, confirm the voltage rating is at least 6.3V. Finally, if considering a polymer tantalum capacitor, review its suitability for your application's leakage current and reliability requirements.

CA45-B-6.3V-100uF-M Alternatives, Datasheet & Cross Reference | NH

Finding a substitute for the CA45-B-6.3V-100uF-M tantalum capacitor involves matching its 100µF capacitance, 6.3V rating, and 'B' case package. Several alternatives exist, including direct pin-compatible upgrades and functional alternatives with different packages or technology.

AI replacement insight

Package riskhigh

Many alternatives are in different packages (A-case, D-case) and are not drop-in replacements.

Electrical riskmedium

Polymer tantalum alternatives have different leakage and failure modes that must be reviewed.

Sourcing risklow

Multiple manufacturers produce similar 100µF 6.3V tantalum capacitors.

Can it be replaced directly?

Yes, CA45A-B-6.3V-100uF-K is a pin-compatible replacement for CA45-B-6.3V-100uF-M with improved tolerance and ESR.

Best replacement path

The best direct replacement is CA45A-B-6.3V-100uF-K, which is pin-compatible and offers better performance. For new designs, polymer tantalum options like CA45B-B-6.3V-100UF-K offer significantly lower ESR but require technology validation.

Main risk

The main risk when substituting is package mismatch. Several functional alternatives exist in different case sizes that require a PCB layout change. Another risk is the use of Tantalum Polymer technology, which has different electrical characteristics than standard solid tantalum.

Recommended alternatives

A strong pin-compatible match from the same manufacturer with improved tolerance and lower ESR.

View details

Alternative comparison matrix

Feature / factor	CA45-B-6.3V-100uF-M	CA45A-B-6.3V-100uF-K	CA45B-B-6.3V-100UF-K	Compatibility / risk
Package	B	B	3528-19 (Case B)	B / 3528-19 (Case B) — Package code matches.; CA45B-B-6.3V-100UF-K: Package is a dimensional match.
Voltage	6.3 V	6.3 V	-	6.3 V — Voltage rating is identical.
Tolerance	±20%	±10%	±10%	±10% — Candidate has tighter tolerance.; CA45B-B-6.3V-100UF-K: Tighter tolerance.
Esr	5.0 Ω max	3 Ω max	1.2 Ω max	3 Ω max / 1.2 Ω max — Candidate has lower ESR.; CA45B-B-6.3V-100UF-K: Significantly lower ESR.
Technology	Tantalum (Solid)	-	Tantalum Polymer	Tantalum Polymer — Different capacitor technology.

Application & sourcing insights

Questions & answers

The best alternative is CA45A-B-6.3V-100uF-K. It is a pin-compatible replacement from the same manufacturer with the same ratings but offers improved tolerance (±10%) and lower ESR (3Ω).