What risks should I check before replacing CA45A-A-16V-10uF-K?

Key risks include package mismatch, which requires a new PCB layout; wider capacitance tolerance (e.g., ±20% vs ±10%), which can affect circuit precision; and significant changes in ESR, which can impact filter performance or power supply stability.

CA45A-A-16V-10uF-K Alternatives, Datasheet & Cross Reference | NH

The XY CA45A-A-16V-10uF-K is a standard 10µF, 16V, ±10% tantalum capacitor in an EIA 'A' case. Finding a substitute involves matching these key parameters and the physical footprint.

AI replacement insight

Package riskhigh

Many alternatives are in a larger 'B' case, which is not a drop-in fit.

Electrical riskmedium

Some candidates have wider tolerance (±20%) or different ESR, which can affect circuit performance.

Sourcing risklow

This is a common capacitor value with multiple vendors available.

Can it be replaced directly?

Direct replacement for CA45A-A-16V-10uF-K should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Prioritize CA45B-A-16V-10uF-K for its matching package and electricals. If unavailable, consider T491A106M020AT if wider tolerance is acceptable.

Main risk

The primary risk is physical incompatibility; many alternatives use a larger 'B' case, requiring a PCB redesign.

Recommended alternatives

Matches package, voltage, and capacitance with improved (lower) ESR.

View details

Alternative comparison matrix

Feature / factor	CA45A-A-16V-10uF-K	CA45B-A-16V-10uF-K	T491A106M020AT	Compatibility / risk
Package	A	A	3216-18 ('A')	A / 3216-18 ('A') — EIA case 'A' (3.2x1.6mm) matches target.; T491A106M020AT: Appears to be 'A' case but requires verification.
Capacitance	10uF	10uF	-	10uF — Capacitance matches.
Voltage	16V	16V	20V	16V / 20V — Voltage rating matches.; T491A106M020AT: Higher voltage rating provides more margin.
Tolerance	±10%	±10%	±20%	±10% / ±20% — Tolerance matches.; T491A106M020AT: Wider tolerance is a parametric downgrade.
Esr	7.0 Ohm	3.0 Ohm	5.0 Ohm	3.0 Ohm / 5.0 Ohm — Lower ESR is generally an improvement but should be reviewed.; T491A106M020AT: Lower ESR is an improvement.

Application & sourcing insights

Questions & answers

Verified drop-in options for CA45A-A-16V-10uF-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.