
AISHI
Strongest candidate with matching capacitance, voltage, and 16x25mm radial package. Requires verification.
Finding a substitute for the Rubycon 63YXJ1000M16X25, a 1000µF 63V radial capacitor, requires matching its 16x25mm case size and key electricals like ESR and ripple current. Several alternatives exist with varying parameters.
Secondary parameters (ESR, ripple, lifetime) must be verified.
Many candidates have different dimensions, requiring layout changes.
No drop-in replacement is confirmed without datasheet review. The AISHI EWH1JM102L25OT is the closest form-fit-function match but requires engineering validation.
The AISHI EWH1JM102L25OT offers matching capacitance, voltage, and case size, making it the most promising candidate pending datasheet verification.
The primary risk is physical incompatibility from different case sizes or electrical mismatch in secondary parameters like ESR and ripple current.

AISHI
Strongest candidate with matching capacitance, voltage, and 16x25mm radial package. Requires verification.
| Feature / factor | 63YXJ1000M16X25 | EWH1JM102L25OT | 100PX1000MEFC18X35.5 | ERS1KM102M35OT | Compatibility / risk |
|---|---|---|---|---|---|
| Capacitance | 1000µF | 1000µF | 1000µF | 1000µF | 1000µF — Capacitance matches.; 100PX1000MEFC18X35.5: Capacitance matches.; ERS1KM102M35OT: Capacitance matches. |
| Voltage | 63V | 63V | 100V | 100V | 63V / 100V — Voltage rating matches.; 100PX1000MEFC18X35.5: Higher voltage rating provides more design margin.; ERS1KM102M35OT: Higher voltage rating provides more design margin. |
| Package | 16mm x 25mm | 16mm x 25mm | 18mm x 35.5mm | 18mm x 35mm | 16mm x 25mm / 18mm x 35.5mm / 18mm x 35mm — Case dimensions match target.; 100PX1000MEFC18X35.5: Physically larger, will not fit in the same footprint.; ERS1KM102M35OT: Physically larger, will not fit in the same footprint. |
| Ripple Current | Unknown | 930mA @ 120Hz | - | - | 930mA @ 120Hz — Target ripple current unknown, requires datasheet check. |
The AISHI EWH1JM102L25OT is a strong candidate, matching key specs and package size. However, you must verify ESR, ripple current, and lead spacing from the datasheet before use.