
rubycon
A major upgrade with a 50V rating and 10000h life, but requires verification of physical fit.
The AISHI EWH1EM222K20OT is a 2200µF 25V aluminum electrolytic capacitor in a compact 13x20mm radial package. Finding a direct replacement is challenging, as most functional alternatives with similar electrical ratings come in larger packages requiring design modifications.
All candidates are physically larger (16-18mm diameter vs 13mm) and have different lead spacing (7.5mm vs 5mm).
All candidates have equal or higher voltage ratings, which is a safe substitution. Other parameters like ESR should be checked.
Multiple manufacturers offer functionally similar parts, though finding a matching package is the main challenge.
No, there are no direct, pin-compatible replacements for EWH1EM222K20OT among the candidates reviewed. All alternatives are physically larger and have different lead spacing, requiring PCB layout changes.
The best replacement path is to select an alternative with a higher voltage and longer life, such as the Rubycon 50YXF2200MEFC18X35.5, but only if the PCB design can be modified to accommodate its larger size (18x35.5mm) and wider lead spacing (7.5mm).
The primary risk is mechanical incompatibility. All potential substitutes are larger in diameter and length and have wider lead spacing, preventing a drop-in replacement.

rubycon
A major upgrade with a 50V rating and 10000h life, but requires verification of physical fit.
| Feature / factor | EWH1EM222K20OT | 50YXF2200MEFC18X35.5 | ERF1VM222L25OT | KM228M035K25RR0VH2FP0 | Compatibility / risk |
|---|---|---|---|---|---|
| Voltage | 25V | 50V | 35V | 35V | 50V / 35V — Candidate voltage is higher, which is a safe upgrade.; ERF1VM222L25OT: Candidate voltage is higher, which is a safe upgrade.; KM228M035K25RR0VH2FP0: Candidate voltage is higher, which is a safe upgrade.; KM228M050L25RR0VH2FP0: Candidate voltage is higher, which is a safe upgrade. |
| Lifecycle | 2000h @ 105°C | 10000h @ 105°C | 6000h @ 105°C | 2000h @ 105°C | 10000h @ 105°C / 6000h @ 105°C / 2000h @ 105°C — Candidate has a significantly longer lifetime.; ERF1VM222L25OT: Candidate has a significantly longer lifetime.; KM228M035K25RR0VH2FP0: Lifetime rating is equivalent.; KM228M050L25RR0VH2FP0: Lifetime rating is equivalent. |
| Package | 13mm x 20mm | 18mm x 35.5mm | 16mm x 25mm | 16mm x 25mm | 18mm x 35.5mm / 16mm x 25mm / 18mm x 25mm — Candidate is physically much larger and will not fit in the same space.; ERF1VM222L25OT: Candidate is physically larger and will not fit in the same space.; KM228M035K25RR0VH2FP0: Candidate is physically larger and will not fit in the same space.; KM228M050L25RR0VH2FP0: Candidate is physically larger and will not fit in the same space. |
| Pinout | 5mm | 7.5mm | 7.5mm | 7.5mm | 7.5mm — Lead spacing does not match, requires PCB modification.; ERF1VM222L25OT: Lead spacing does not match, requires PCB modification.; KM228M035K25RR0VH2FP0: Lead spacing does not match, requires PCB modification.; KM228M050L25RR0VH2FP0: Lead spacing does not match, requires PCB modification. |
The best alternative depends on your design flexibility. If you can change the PCB layout, 50YXF2200MEFC18X35.5 by Rubycon offers a significant upgrade in voltage (50V) and lifetime (10000h). If not, a new search for a part with a 13x20mm package and 5mm lead spacing is required.