Is there a pin-compatible replacement for ERS1HM331G13OT?

While NJCON 3310501013R00 matches the package and pinout, its different dielectric type (polymer) means it is not a direct drop-in replacement without engineering validation.

What risks should I check before replacing ERS1HM331G13OT?

Verify mechanical clearance for any height differences, and check circuit stability (e.g., in voltage regulators) as substitutes may have significantly lower ESR.

ERS1HM331G13OT Alternatives, Datasheet & Cross Reference | AISHI

Find substitutes for the AISHI ERS1HM331G13OT, a 330µF 50V radial aluminum electrolytic capacitor. Key considerations for replacement include package size, ESR, and dielectric type.

AI replacement insight

Electrical riskhigh

Substituting a low-ESR polymer cap can cause instability in some circuits.

Package riskmedium

Some alternatives are taller and require mechanical clearance checks.

Can it be replaced directly?

No direct drop-in replacement has been verified. The closest options are polymer capacitors which offer better performance but require engineering review.

Best replacement path

Consider form-fit polymer capacitors like NJCON 3310501013R00, but verify circuit stability due to lower ESR.

Main risk

The main risks are circuit instability from using a low-ESR polymer capacitor and mechanical incompatibility from different package sizes.

Recommended alternatives

A form-fit alternate with same capacitance and voltage, but uses polymer dielectric for lower ESR.

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Alternative comparison matrix

Feature / factor	ERS1HM331G13OT	3310501013R00	SPZ1HM331G15O00RAXXX	Compatibility / risk
Package	Radial, 10mm x 13mm	Radial, 10mm x 13mm	Radial, 10mm x 15mm	Radial, 10mm x 13mm / Radial, 10mm x 15mm — Form-factor matches.; SPZ1HM331G15O00RAXXX: Candidate is 2mm taller.
Capacitance	330µF	330µF	330µF	330µF — matched; SPZ1HM331G15O00RAXXX: matched
Voltage	50V	50V	50V	50V — matched; SPZ1HM331G15O00RAXXX: matched
Dielectric	Electrolytic	Polymer	Polymer	Polymer — Candidate is polymer type, target is standard electrolytic.; SPZ1HM331G15O00RAXXX: Candidate is polymer type, target is standard electrolytic.
Esr	~112mΩ	35mΩ	-	35mΩ — Significantly lower ESR may affect circuit stability.

Application & sourcing insights

Questions & answers

The NJCON 3310501013R00 is a strong candidate with the same package, capacitance, and voltage, but it is a polymer type with lower ESR, which requires circuit review.