What risks should I check before replacing ERF1KM331L20OT?

First, verify physical dimensions (diameter, height, lead spacing) match your PCB layout. Second, check secondary parameters like lifetime and ESR to ensure they meet your design's reliability and performance needs.

ERF1KM331L20OT Alternatives, Datasheet & Cross Reference | AISHI

The AISHI ERF1KM331L20OT is a 330µF 100V radial aluminum electrolytic capacitor for power applications. Finding a substitute requires matching capacitance, voltage, and physical dimensions.

AI replacement insight

Electrical risklow

Many parts match primary voltage and capacitance ratings.

Package riskhigh

Substitutes vary in diameter, height, and lead spacing.

Can it be replaced directly?

Direct replacement for ERF1KM331L20OT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with Datasheet verified or Strong match candidates for ERF1KM331L20OT, then review parametric alternatives for package and electrical fit.

Main risk

The main risk is physical incompatibility. Many functional alternatives have different package sizes or lead spacing, requiring PCB changes.

Recommended alternatives

A strong alternative with identical key electricals and package, but a slightly shorter rated lifetime.

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Alternative comparison matrix

Feature / factor	ERF1KM331L20OT	SHG330UF100V146EC0462	ERE1KM331W25OT	Compatibility / risk
Capacitance	330 µF	330 µF	330 µF	330 µF — Exact match.; ERE1KM331W25OT: Exact match.
Voltage	100 V	100 V	100 V	100 V — Exact match.; ERE1KM331W25OT: Exact match.
Package	Radial, 16mm x 20mm	Radial, 16mm x 20mm	Radial, 12.5mm x 25mm	Radial, 16mm x 20mm / Radial, 12.5mm x 25mm — Identical package dimensions and lead spacing.; ERE1KM331W25OT: Different diameter and length.
Lifetime	6000h @ 105°C	5000h @ 105°C	4000h @ 105°C	5000h @ 105°C / 4000h @ 105°C — Candidate has a shorter rated lifetime.; ERE1KM331W25OT: Candidate has a shorter rated lifetime.
Pinout	7.5mm	-	5.0mm	5.0mm — Lead spacing does not match.

Application & sourcing insights

Questions & answers

Verified drop-in options for ERF1KM331L20OT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.