Is there a pin-compatible replacement for TPSB226K020R0400?

TAJB226M020RNJ is in the same B-case (1210) package and is likely pin-compatible, but it is not a direct functional equivalent due to significantly worse tolerance and ESR. Full electrical validation is required.

What risks should I check before replacing TPSB226K020R0400?

Key risks include package size mismatch, lower voltage ratings, wider capacitance tolerance (e.g., 20% vs 10%), and significantly higher ESR. Higher ESR can affect filtering efficiency and power dissipation.

TPSB226K020R0400 Alternatives, Datasheet & Cross Reference | AVX

Finding a substitute for the AVX TPSB226K020R0400, a 22µF 20V 10% tantalum capacitor in a 1210 package, requires checking key parameters. While some parts match the B-case package, they often have weaker tolerance or higher ESR.

AI replacement insight

Package riskhigh

Several candidates are in larger packages requiring a board redesign.

Electrical riskhigh

Many candidates have significantly higher ESR or wider tolerance, impacting circuit performance.

Can it be replaced directly?

No direct drop-in replacement has been identified. All candidates have significant differences in package or electrical parameters that require engineering review.

Best replacement path

TAJB226M020RNJ is the closest in form-factor but requires careful analysis due to weaker tolerance and ESR. If board space allows, TAJE226K035RNJ is a functional option with a better voltage rating.

Main risk

No candidate offers a true drop-in replacement; substitutes have weaker electrical parameters (ESR, tolerance) or different physical packages.

Recommended alternatives

Shares the B-case package but has weaker tolerance and significantly higher ESR.

View details

Alternative comparison matrix

Feature / factor	TPSB226K020R0400	TAJB226M020RNJ	TAJD226K025RNJ	TAJE226K035RNJ	Compatibility / risk
Package	1210 (3528 Metric)	3528 (1210)	2917 (D Case)	7343 (E Case)	3528 (1210) / 2917 (D Case) / 7343 (E Case) — Same B-Case package family.; TAJD226K025RNJ: Candidate is larger, requires board redesign.; TAJE226K035RNJ: Candidate is much larger, requires board redesign.
Tolerance	10%	20%	10%	10%	20% / 10% — Wider tolerance may affect circuit precision.; TAJD226K025RNJ: matched; TAJE226K035RNJ: matched
Esr	400 mOhms	1.8 Ohms	900 mOhms	500 mOhms	1.8 Ohms / 900 mOhms / 500 mOhms — Much higher ESR is a major performance risk.; TAJD226K025RNJ: Significantly higher ESR is a major performance risk.; TAJE226K035RNJ: Higher ESR may impact performance.
Voltage	20V	20V	25V	35V	20V / 25V / 35V — matched; TAJD226K025RNJ: Higher voltage rating provides more margin.; TAJE226K035RNJ: Higher voltage rating provides more margin.

Application & sourcing insights

Questions & answers

No direct drop-in replacement is identified. TAJB226M020RNJ shares the same package and ratings but has wider tolerance and much higher ESR. Alternatives in different packages like TAJE226K035RNJ offer higher voltage but require a board redesign.