Is there a pin-compatible replacement for 293D226X9016B2TE3?

Several parts like the KEMET T521B226M025ATE100 share the same 3528-21 package and pinout. However, they differ in electrical characteristics like ESR and technology, so they are not guaranteed drop-in replacements without engineering validation.

What risks should I check before replacing 293D226X9016B2TE3?

Key risks include: 1) Package size mismatch (e.g., A case vs. B case) requiring a new PCB layout. 2) Different capacitor technology (Polymer vs. Solid) affecting ESR and circuit stability. 3) Wider tolerance (e.g., ±20% vs ±10%) impacting circuit precision.

293D226X9016B2TE3 Alternatives, Datasheet & Cross Reference | Vishay Sprague

The Vishay 293D226X9016B2TE3 is a standard 22µF, 16V solid tantalum capacitor in a B case (3528-21) package. This page reviews potential alternatives, focusing on matching key electrical parameters and physical footprint.

AI replacement insight

Package riskhigh

Some alternatives are in a smaller 'A' case, which is not a drop-in replacement for the 'B' case target.

Electrical riskmedium

Alternates may use Polymer technology or have different ESR/tolerance, requiring circuit validation.

Can it be replaced directly?

No direct pin-for-pin replacement has been verified. Several candidates offer a similar form factor or function but have differences in package size, tolerance, or capacitor technology (Polymer vs. Solid) that require engineering review.

Best replacement path

Consider polymer tantalum capacitors in the same B case (3528) footprint, which may offer similar ESR and a compatible footprint, but require review for technology differences.

Main risk

The main risks are package mismatch requiring PCB changes, or technology differences (e.g., Polymer vs. Solid MnO2) which can affect circuit stability due to ESR changes.

Recommended alternatives

A potential upgrade with higher voltage and lower ESR, but uses different polymer technology.

View details

Alternative comparison matrix

Feature / factor	293D226X9016B2TE3	T521B226M025ATE100	CA45A-B-16V-22UF-K	Compatibility / risk
Package	3528-21 (B Case)	3528-21 (1411 Metric)	3528-19	3528-21 (1411 Metric) / 3528-19 — Package code and dimensions match.; CA45A-B-16V-22UF-K: Same footprint (3528), but lower profile (1.9mm vs 2.1mm).
Voltage	16V	25V	16V	25V / 16V — Higher voltage rating provides more margin.; CA45A-B-16V-22UF-K: Voltage rating matches.
Esr	1.9Ω	100mΩ	2.2Ω	100mΩ / 2.2Ω — Polymer tech results in much lower ESR. Check circuit stability.; CA45A-B-16V-22UF-K: ESR is very close to target's 1.9Ω.
Tolerance	±10%	±20%	±10%	±20% / ±10% — Wider tolerance may not be suitable for precision circuits.; CA45A-B-16V-22UF-K: Tolerance matches.
Technology	Solid	Polymer	Polymer	Polymer — Candidate is Polymer, target is Solid MnO2.; CA45A-B-16V-22UF-K: Candidate is Polymer, target is Solid MnO2.

Application & sourcing insights

Questions & answers

Candidates like the CA45A-B-16V-22UF-K offer a very close parametric match in a compatible footprint, but use polymer technology. For a guaranteed drop-in, review of the datasheet and application is essential.