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Best Alternatives to 189RV0021

Package: SMD, 6.3mm x 7.7mmKNSCHAAluminum Electrolytic CapacitorsCapacitance: 22uFRated Voltage: 100VTolerance: ±20%Ripple Current: 75mA @ 100KHzESR: 1.8Ω @ 100KHz

Finding a substitute for the KNSCHA 189RV0021, a 22uF 100V SMD aluminum electrolytic capacitor, requires careful review. While functional alternatives exist, no direct drop-in replacements were found due to package and mounting differences.

AI replacement insight

Package riskhigh

No candidates match the target's 6.3mm x 7.7mm SMD package. All require layout changes.

Electrical risklow

Several candidates match key electrical parameters (22uF, 100V, ±20%) or offer a safe upgrade (higher voltage).

Sourcing risklow

Multiple manufacturers offer functionally similar parts, providing sourcing flexibility if a board redesign is feasible.

Can it be replaced directly?

There are no direct, drop-in replacements for 189RV0021 due to package and mounting type differences among all potential candidates.

Best replacement path

No direct drop-in replacement exists. For new designs or revisions, ERJ1KM220E12OT is an electrically identical through-hole option. If staying with SMD, VT2A220M0810 is electrically similar but requires a larger footprint.

Main risk

The primary risk is mechanical incompatibility. All reviewed alternatives have different physical footprints or mounting technologies (SMD vs. Through-Hole), necessitating a PCB redesign.

Recommended alternatives

5
VT2A220M0810 package
VT2A220M0810

ROQANG

Needs validationhigh risk

Functional alternative with matching electricals but a larger SMD package (8x10.2mm vs 6.3x7.7mm).

View details

Alternative comparison matrix

Feature / factor189RV0021VT2A220M0810UV2D220M1010ERJ1KM220E12OTCompatibility / risk
Package6.3mm x 7.7mm8mm x 10.2mm10x10.2mm SMDRadial, 6.3mm x 12mm8mm x 10.2mm / 10x10.2mm SMD / Radial, 6.3mm x 12mm / Radial, 12.5mm x 16mm — Candidate is a larger SMD package, requires layout change.; UV2D220M1010: Candidate is a significantly larger SMD package, requires layout change.; ERJ1KM220E12OT: Candidate is a through-hole part, target is SMD. Requires board redesign.; ERT226M2WI16RR: Candidate is a through-hole part, target is SMD. Requires board redesign.
Voltage100V100V200V100V100V / 200V / 450V — Voltage rating matches the target.; UV2D220M1010: Higher voltage rating provides more design margin.; ERJ1KM220E12OT: Voltage rating matches the target.; ERT226M2WI16RR: Much higher voltage rating provides significant margin.
Capacitance22uF22uF22uF22uF22uF — Capacitance matches the target.; UV2D220M1010: Capacitance matches the target.; ERJ1KM220E12OT: Capacitance matches the target.; ERT226M2WI16RR: Capacitance matches the target.
Tolerance±20%±20%--±20% — Tolerance matches the target.

Application & sourcing insights

Questions & answers

No direct drop-in replacement for 189RV0021 was found. The best alternative depends on your design flexibility. If you can modify the PCB layout, ERJ1KM220E12OT is an electrically identical through-hole option, while VT2A220M0810 is a larger SMD option.