
AISHI
Matches key electricals with a smaller diameter that will fit; check secondary parameters like ESR.
Finding a substitute for the Rubycon 35YXJ1000M12.5X20, a 1000µF 35V radial capacitor, involves matching key electricals and physical dimensions. Alternatives exist with similar or better voltage ratings, but require checking case size and secondary parameters like ESR.
Candidates have different case sizes requiring fit verification.
Key parameters match or are upgrades, but secondary specs (ESR) need review.
No verified direct drop-in replacement has been identified. The closest options require engineering review of physical dimensions or secondary electrical parameters.
The AISHI ERR1VM102G20OT is the strongest candidate, matching all key electricals with a smaller, compatible footprint. Reviewing its ESR and ripple current against the application's needs is recommended.
The main risk is physical incompatibility (case size, lead spacing) or a mismatch in secondary parameters like ESR and ripple current, which can affect circuit performance and reliability.

AISHI
Matches key electricals with a smaller diameter that will fit; check secondary parameters like ESR.
| Feature / factor | 35YXJ1000M12.5X20 | ERR1VM102G20OT | KM108M050J25RR0VH2FP0 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Capacitance | 1000µF | 1000µF | - | 1000µF — Exact match. | |
| Voltage | 35V | 35V | - | 50V — Higher voltage is a safe upgrade. | |
| Package | 12.5mm x 20mm | 10mm x 20mm | - | 13mm x 25mm — 5mm taller, requires vertical clearance check. | |
| Pinout | 5mm (typical) | 5mm | - | 5mm — Lead spacing matches. | |
| Esr | Unknown | Unknown | - | Unknown — Smaller case may have higher ESR. Review required. |
The AISHI ERR1VM102G20OT is a strong functional alternative. It matches the 1000µF capacitance and 35V rating in a smaller package (10x20mm) that will physically fit, but requires checking ESR and ripple current specs.