
A form-fit alternative with matching voltage, but a shorter operational lifetime that poses a downgrade risk.
Finding a substitute for the KNSCHA SHF1000UF35V01EC4584 1000uF 35V capacitor involves balancing electrical parameters, physical size, and performance metrics like lifetime. Several alternatives exist with varying trade-offs.
Many alternatives are physically larger and will not fit the same PCB footprint.
Lifetime is a key parameter that is often lower in alternatives. ESR must also be checked.
No direct, verified drop-in replacement has been identified. Candidates require datasheet review to confirm mechanical fit and performance parameters like lifetime.
Review CapXon KM102M050I250A for a potential voltage upgrade, or use CX KM108M035J20RR0VH2FP0 if a shorter lifetime is acceptable.
The main risks are mechanical incompatibility from larger parts and performance downgrades from parts with shorter operational lifetimes.

A form-fit alternative with matching voltage, but a shorter operational lifetime that poses a downgrade risk.
| Feature / factor | SHF1000UF35V01EC4584 | KM108M035J20RR0VH2FP0 | KM102M050I250A | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 13x20mm, 5.0mm pitch | 13mm x 20mm, 5mm pitch | 13mm x 20mm | 13mm x 20mm, 5mm pitch — Matches target dimensions and lead spacing.; KM102M050I250A: Matches target body dimensions. | |
| Voltage | 35V | 35V | 50V | 35V / 50V — Matches target voltage rating.; KM102M050I250A: Higher voltage provides more design margin. | |
| Lifetime | 5000 hours | 2000 hours | Not specified | 2000 hours / Not specified — Significant performance downgrade.; KM102M050I250A: Critical for reliability; must verify. | |
| Esr | 0.07 Ω | Not specified | - | Not specified — Must be verified from datasheet. | |
| Lead Spacing | 5.0mm | - | Not specified | Not specified — Must be verified for pin compatibility. |
The best alternative depends on your priority. For a potential upgrade, CapXon's KM102M050I250A offers higher voltage but requires datasheet verification. For a form-fit match, CX's KM108M035J20RR0VH2FP0 fits but has a shorter lifetime.