Is there a pin-compatible replacement for KNH2220UF35V149EC0049?

No direct pin-for-pin replacement with identical dimensions has been identified. Alternatives like the AISHI SPZ1VM221E12O00RAXXX have the same radial lead style but differ in case size, requiring a form/fit check.

What risks should I check before replacing KNH2220UF35V149EC0049?

The main risk is physical incompatibility. Check the candidate's diameter and height against your board's available space. Also, verify that the ESR and ripple current ratings are equal to or better than the original's 40mΩ and 1.7A.

KNH2220UF35V149EC0049 Alternatives, Datasheet & Cross Reference | KNSCHA

Finding a substitute for the KNSCHA KNH2220UF35V149EC0049 220µF 35V radial capacitor involves matching key electrical parameters and physical size. Alternatives exist with similar or better performance, but require careful verification of package dimensions.

AI replacement insight

Package riskhigh

No candidates match the target's 8x9mm radial package. All require a fit check.

Electrical risklow

Candidates with matching or superior voltage, ESR, and ripple current are available.

Sourcing riskmedium

The target part is from a less common brand; alternatives may have better availability but require the checks mentioned.

Can it be replaced directly?

No direct, drop-in replacement is confirmed. All viable alternatives require a physical fit check due to different case dimensions.

Best replacement path

Use a radial capacitor with C=220µF, V≥35V, ESR≤40mΩ, and Ripple≥1.7A. The AISHI SPZ1VM221E12O00RAXXX is a good starting point, but verify its 6.3x11mm size fits.

Main risk

Physical package mismatch is the primary risk. Candidates may be taller or have a different diameter, requiring board layout verification.

Recommended alternatives

A functional alternative with superior ESR and ripple current, but different physical dimensions that require verification.

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Alternative comparison matrix

Feature / factor	KNH2220UF35V149EC0049	SPZ1VM221E12O00RAXXX	SPZ1JM221G15O00RAXXX	Compatibility / risk
Package	Radial, 8mm x 9mm	Radial, 6.3mm x 11mm	-	Radial, 10mm x 15mm — Significantly larger diameter and height, high risk of not fitting.
Voltage	35V	35V	-	63V — Higher voltage rating provides increased reliability.
Esr	40mΩ	30mΩ	-	20mΩ — Significantly lower ESR improves performance.
Ripple Current	1.7A	2.7A	-	2.65A — Higher ripple current handling.
Capacitance	220µF	220µF	-	220µF — matched

Application & sourcing insights

Questions & answers

The AISHI SPZ1VM221E12O00RAXXX is a strong candidate, offering better ESR and ripple current. However, it is taller (11mm vs 9mm), so physical clearance must be checked.