Is there a pin-compatible replacement for CA45-D-16V-47uF-K?

CA45B-D-25V-47UF-K is a likely pin-compatible replacement. Its '7343-28' package is the metric equivalent of the target's 'D' case. However, you should always verify the datasheet footprint before assembly.

What risks should I check before replacing CA45-D-16V-47uF-K?

Before replacing, check three main risks: 1) Package mismatch, as many alternatives are not drop-in compatible. 2) Electrical downgrades like wider tolerance or higher ESR. 3) Technology differences, like switching to ceramic (MLCC), which can affect performance due to DC bias and aging.

CA45-D-16V-47uF-K Alternatives, Datasheet & Cross Reference | TORCH

Find and compare alternatives for the TORCH CA45-D-16V-47uF-K tantalum capacitor. Top candidates include upgrades with higher voltage ratings and functional alternatives that may require design changes.

AI replacement insight

Package riskhigh

Many candidates have different packages (B-case, 1210) that are not drop-in compatible with the target's D-case.

Electrical riskmedium

Some candidates have wider tolerance, higher ESR, or are a different technology (MLCC, Al-Poly) requiring circuit analysis.

Can it be replaced directly?

No exact drop-in replacement has been verified, but CA45B-D-25V-47UF-K is a very strong candidate that is likely pin-compatible pending footprint verification.

Best replacement path

The best path is an upgrade like CA45B-D-25V-47UF-K, which offers a higher voltage rating (25V) and lower ESR in the same D-case package size.

Main risk

The main risks when substituting are package mismatches requiring board redesign, and changes in capacitor technology (e.g., Tantalum vs. Ceramic) which alter electrical behavior.

Recommended alternatives

Offers a higher voltage rating (25V) and lower ESR in the same D-case package, making it a robust upgrade.

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Alternative comparison matrix

Feature / factor	CA45-D-16V-47uF-K	CA45B-D-25V-47UF-K	CA45A-B-16V-47UF-K	Compatibility / risk
Package	D	7343-28 (D-Case)	B	7343-28 (D-Case) / B — Candidate package is the metric equivalent of the target's D-Case.; CA45A-B-16V-47UF-K: Package mismatch requires board layout change.
Voltage	16V	25V	16V	25V / 16V — Higher voltage rating provides increased design margin.; CA45A-B-16V-47UF-K: matched
Esr	0.9 Ω	≤0.3 Ω	-	≤0.3 Ω — Lower ESR improves efficiency and filtering performance.
Tolerance	±10%	±10%	±10%	±10% — matched; CA45A-B-16V-47UF-K: matched
Capacitance	47µF	47µF	47µF	47µF — matched; CA45A-B-16V-47UF-K: matched

Application & sourcing insights

Questions & answers

The best alternative appears to be CA45B-D-25V-47UF-K. It offers a higher voltage rating (25V) and lower ESR in what is likely the same package size, making it a robust upgrade.