Is there a pin-compatible replacement for CA45A-A-35V-0.1UF-K?

No direct, verified pin-compatible replacement is available. While some parts share the 1206 footprint, critical differences in technology (e.g., MLCC vs. Tantalum) and electrical parameters mean they are not drop-in replacements and require engineering validation.

What risks should I check before replacing CA45A-A-35V-0.1UF-K?

Key risks include: 1) Technology change from Tantalum Polymer to MLCC or Solid Tantalum, affecting ESR, DC bias, and reliability. 2) Tolerance changes, which can impact circuit precision. 3) Minor package height differences that could affect mechanical clearance.

CA45A-A-35V-0.1UF-K Alternatives, Datasheet & Cross Reference | NH

Find and compare functional alternatives for the CA45A-A-35V-0.1UF-K, a 0.1µF 35V Tantalum Polymer capacitor in a 1206 package. Review key differences in technology, package, and electrical parameters before substitution.

AI replacement insight

Electrical riskhigh

Technology change from Tantalum Polymer to MLCC or Solid Tantalum introduces significant performance differences.

Package riskmedium

Some candidates have minor height differences, though footprints may match.

Can it be replaced directly?

No direct pin-to-pin replacement has been identified. All candidates require engineering review due to differences in technology (MLCC/Solid Tantalum vs. Polymer) or electrical parameters.

Best replacement path

Consider MLCCs like TCC1206X7R104K500DT for a form-fit option, but verify DC bias effects. Tantalum alternatives like T491A104M050AT have different tolerance and technology.

Main risk

The primary risk is changing capacitor technology from Tantalum Polymer, which affects DC bias, ESR, and failure modes.

Recommended alternatives

Form-fit MLCC alternative with same capacitance and tolerance, but different technology requiring review.

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Alternative comparison matrix

Feature / factor	CA45A-A-35V-0.1UF-K	TCC1206X7R104K500DT	T491A104M050AT	Compatibility / risk
Technology	Tantalum Polymer	Ceramic (MLCC)	Tantalum Solid	Ceramic (MLCC) / Tantalum Solid — MLCCs have DC bias voltage dependency, Tantalum does not.; T491A104M050AT: Different failure modes and ESR characteristics vs. Polymer.
Package	3216-16 (A)	1206 (3216 Metric)	3216-18 (1206)	1206 (3216 Metric) / 3216-18 (1206) — Form-fit compatible package footprint.; T491A104M050AT: Slightly taller package (1.8mm vs 1.6mm), footprint compatible.
Voltage	35V	50V	50V	50V — Higher voltage rating.; T491A104M050AT: Higher voltage rating provides more margin.
Tolerance	±10%	±10%	±20%	±10% / ±20% — Tolerance is identical.; T491A104M050AT: Wider tolerance may affect circuit performance.

Application & sourcing insights

Questions & answers

The best alternative depends on the application. For a form-fit option, a 1206 MLCC like TCC1206X7R104K500DT is a candidate, but its DC bias effect must be evaluated. A Tantalum solid cap like T491A104M050AT is electrically closer but has wider tolerance and different failure characteristics.