Is there a pin-compatible replacement for EWH2DM221M25OT?

No, there are no confirmed pin-compatible replacements in this list. All candidates have different physical dimensions or mounting styles (e.g., Snap-In vs. Radial) that prevent them from being a direct drop-in replacement without verification.

What risks should I check before replacing EWH2DM221M25OT?

The main risk is physical fit. Before replacing, you must verify that the candidate's dimensions (diameter and especially length/height) will fit on your PCB without interference. You should also check secondary electrical parameters like ESR and ripple current rating.

EWH2DM221M25OT Alternatives, Datasheet & Cross Reference | AISHI

Finding a substitute for the AISHI EWH2DM221M25OT, a 220µF 200V radial capacitor, requires careful attention to physical dimensions. While several parts offer similar or better electrical performance, none are a direct physical match.

AI replacement insight

Package riskhigh

All candidates have different dimensions or mounting styles (Radial vs. Snap-in).

Electrical risklow

All kept candidates have matching capacitance/tolerance and higher voltage ratings.

Can it be replaced directly?

No, a direct, drop-in replacement for EWH2DM221M25OT was not identified. All suitable alternatives have different physical dimensions that require verification.

Best replacement path

Verify board space for a physically different part. 152EC0251 is the closest form factor but is longer. EHS2GM221M45OT offers better endurance but is much longer.

Main risk

The primary risk is mechanical incompatibility. Candidate capacitors are physically larger or use a different mounting style, which may not fit on the existing PCB.

Recommended alternatives

A strong functional alternative with higher voltage, but a longer package requires a physical fit check.

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Alternative comparison matrix

Feature / factor	EWH2DM221M25OT	152EC0251	EHS2GM221M45OT	ERH2WM221O46OT	Compatibility / risk
Voltage	200V	250V	400V	450V	250V / 400V / 450V — Higher voltage provides a safe margin.; EHS2GM221M45OT: Candidate voltage is higher, offering more headroom.; ERH2WM221O46OT: Candidate voltage is higher, offering more headroom.
Package	Radial, 18mm x 25mm	Radial, 16mm x 32mm	Radial, 18mm x 45mm	Radial, 22mm x 46mm	Radial, 16mm x 32mm / Radial, 18mm x 45mm / Radial, 22mm x 46mm — Slightly smaller diameter but longer body.; EHS2GM221M45OT: Same diameter but much longer (45mm vs 25mm).; ERH2WM221O46OT: Significantly larger diameter and length.
Endurance	2000h	2000h	5000h	3000h	2000h / 5000h / 3000h — matched; EHS2GM221M45OT: Significantly longer rated life.; ERH2WM221O46OT: Longer rated life.
Lead Spacing	7.5mm	7.5mm	-	-	7.5mm — Likely matches target.
Capacitance	220µF ±20%	-	220µF ±20%	220µF ±20%	220µF ±20% — matched; ERH2WM221O46OT: matched

Application & sourcing insights

Questions & answers

The best alternative depends on your space constraints. 152EC0251 is a strong candidate as it is also a radial part, but it is longer (32mm vs 25mm). If you have more space and need higher endurance, EHS2GM221M45OT is an option but is much longer (45mm).