Is there a pin-compatible replacement for EWH1EM331F12OT?

Several parts share the same 8x12mm radial package, but no direct drop-in with identical 330µF capacitance was found. All reviewed candidates have different capacitance values, requiring circuit validation.

What risks should I check before replacing EWH1EM331F12OT?

The main risk is capacitance mismatch. Using a higher or lower value can affect filter performance and circuit stability. Also, check for technology differences, as polymer capacitors have much lower ESR than standard electrolytics.

EWH1EM331F12OT Alternatives, Datasheet & Cross Reference | AISHI

Reviewing alternatives for the AISHI EWH1EM331F12OT, a 330µF 25V aluminum electrolytic capacitor. Key considerations for replacements include capacitance value, technology (electrolytic vs. polymer), and ESR.

AI replacement insight

Electrical riskhigh

Capacitance and technology mismatches require circuit validation.

Package risklow

All candidates share the same 8x12mm radial package.

Sourcing riskmedium

Multiple vendors offer parts in this category, but exact matches are scarce.

Can it be replaced directly?

No direct, drop-in replacement with identical key parameters was identified. All alternatives require engineering review, primarily for capacitance differences.

Best replacement path

Use EWH1EM471F12OT from the same manufacturer series, but validate the impact of its higher 470µF capacitance.

Main risk

Capacitance mismatch is the primary risk across all candidates, potentially altering circuit behavior.

Recommended alternatives

Alternative from the same AISHI WH series with identical package and ratings, but higher 470µF capacitance.

View details

Alternative comparison matrix

Feature / factor	EWH1EM331F12OT	EWH1EM471F12OT	GR477M025F12RR0VH4FP0	KM227M025F12RR0VH2FP0	Compatibility / risk
Capacitance	330µF	470µF	470µF	220µF	470µF / 220µF — Candidate has ~42% higher capacitance.; GR477M025F12RR0VH4FP0: Candidate has ~42% higher capacitance.; KM227M025F12RR0VH2FP0: Candidate has ~33% lower capacitance.
Voltage	25V	25V	25V	25V	25V — matched; GR477M025F12RR0VH4FP0: matched; KM227M025F12RR0VH2FP0: matched
Package	Radial, 8mm x 12mm	Radial, 8mm x 12mm	Radial, 8mm x 12mm	Radial, 8mm x 12mm	Radial, 8mm x 12mm — Same package dimensions and lead spacing.; GR477M025F12RR0VH4FP0: matched; KM227M025F12RR0VH2FP0: matched
Endurance	2000 hrs @ 105°C	2000 hrs @ 105°C	3000 hrs @ 105°C	2000 hrs @ 105°C	2000 hrs @ 105°C / 3000 hrs @ 105°C — matched; GR477M025F12RR0VH4FP0: Candidate has a longer rated life.; KM227M025F12RR0VH2FP0: matched
Series	AISHI WH Series	AISHI WH Series	-	-	AISHI WH Series — Both parts are from the same manufacturer series.

Application & sourcing insights

Questions & answers

EWH1EM471F12OT is a strong candidate from the same AISHI WH series, but has a higher capacitance of 470µF. This requires engineering review to ensure it's suitable for your application.