Is there a pin-compatible replacement for ERS1EM221F12OT?

Yes, ERS1VM221F12OT is a pin-compatible replacement. Other parts like KNSCHA 01EC1230 and 01EC3470 are also pin-compatible in their 8x12mm radial package, but have a significantly shorter rated lifetime.

What risks should I check before replacing ERS1EM221F12OT?

Before replacing, verify three key parameters. First, ensure the voltage rating is 25V or higher. Second, confirm the capacitance is 220µF. Most importantly, check the lifetime rating (endurance in hours at 105°C) to ensure it meets your application's reliability requirements.

ERS1EM221F12OT Alternatives, Datasheet & Cross Reference | AISHI

Find substitutes for the AISHI ERS1EM221F12OT, a 220µF 25V radial capacitor. We've analyzed pin-compatible upgrades and alternatives, highlighting key differences in voltage and lifetime to ensure design reliability.

AI replacement insight

Package risklow

Multiple candidates match the 8x12mm radial package.

Electrical riskmedium

Voltage must be >= 25V. Lifetime is a critical parameter that varies significantly between candidates.

Sourcing risklow

Alternatives are available from multiple manufacturers.

Can it be replaced directly?

Yes, AISHI ERS1VM221F12OT is a pin-compatible upgrade. Other alternatives exist but may have a shorter lifetime, which requires careful review.

Best replacement path

The best replacement is AISHI ERS1VM221F12OT, which is a direct upgrade from the same manufacturer with higher voltage and longer life.

Main risk

The primary risk when substituting is using a part with a significantly shorter rated lifetime (endurance), which can compromise long-term reliability.

Recommended alternatives

A pin-compatible upgrade from the same manufacturer with a higher voltage rating (35V) and longer lifetime (10,000h).

View details

Alternative comparison matrix

Feature / factor	ERS1EM221F12OT	ERS1VM221F12OT	01EC1230	01EC3470	Compatibility / risk
Package	Radial, 8mm x 12mm	Radial, 8mm x 12mm	-	-	Radial, 8mm x 12mm — Same physical dimensions and lead spacing.
Voltage	25V	35V	-	-	50V — Higher voltage rating provides significant design margin.
Capacitance	220µF	220µF	-	-	220µF — Identical capacitance value.
Lifetime	7000h	10000h	-	-	2000h — Significantly shorter lifetime may impact system reliability.
Manufacturer	AISHI	AISHI	-	-	AISHI — Same manufacturer, same product series.

Application & sourcing insights

Questions & answers

The best alternative for ERS1EM221F12OT is AISHI's ERS1VM221F12OT. It is from the same product series and offers a higher voltage rating (35V) and longer lifetime (10,000 hours) while being pin-compatible.