Needs validationmedium risk
Closest form-fit match with same diameter, but has a major reliability downgrade due to shorter load life.
Best Alternatives to 100YXJ47MT78X16
The Rubycon 100YXJ47MT78X16 is a 47µF, 100V through-hole aluminum electrolytic capacitor in an 8mm radial can, notable for its long 7000-hour load life. Finding a direct replacement is challenging due to this combination of size and high reliability.
AI replacement insight
Package riskhigh
Most candidates are SMD or have different diameters, requiring board redesign or preventing assembly.
Electrical riskhigh
The best physical match has a 70% shorter load life, posing a major reliability risk.
Sourcing risklow
Multiple functional and parametric alternatives exist from various manufacturers.
Can it be replaced directly?
No direct, drop-in replacement has been identified. The closest physical match, KM476M100F12RR0VH2FP0, is a significant downgrade in terms of lifetime and requires careful validation.
Best replacement path
The most promising candidate is KM476M100F12RR0VH2FP0 due to its matching 8mm diameter, but it carries a significant reliability risk with a much shorter load life (2000h vs 7000h). Other options require a complete PCB redesign as they are surface-mount devices.
Main risk
The primary risks are physical incompatibility (package size and mounting type) and reliability downgrades (load life).
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | 100YXJ47MT78X16 | KM476M100F12RR0VH2FP0 | VZH470M2ATR-1010 | SPZ1KM470G12O00RAXXX | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Radial, 8mm x 16mm | Radial, 8mm x 12mm | SMD, 10mm x 10mm | Radial, 10mm x 12mm | Radial, 8mm x 12mm / SMD, 10mm x 10mm / Radial, 10mm x 12mm — Diameter matches, height is shorter.; VZH470M2ATR-1010: Requires board redesign.; SPZ1KM470G12O00RAXXX: Larger diameter may not fit. |
| Lifetime | 7000h @ 105°C | 2000h @ 105°C | - | 2000h @ 105°C | 2000h @ 105°C — Significantly shorter lifetime.; SPZ1KM470G12O00RAXXX: Significantly shorter lifetime. |
| Voltage | 100V | 100V | 100V | 100V | 100V — matched; VZH470M2ATR-1010: matched; SPZ1KM470G12O00RAXXX: matched |
| Capacitance | 47µF | 47µF | 47µF | 47µF | 47µF — matched; VZH470M2ATR-1010: matched; SPZ1KM470G12O00RAXXX: matched |
| Application | General Purpose | - | AEC-Q200 | - | AEC-Q200 — Candidate is automotive grade. |
Application & sourcing insights
Questions & answers
The best alternative depends on your design constraints. KM476M100F12RR0VH2FP0 is the closest in physical size but has a much shorter lifetime. If you can redesign your PCB, an SMD part like VZH470M2ATR-1010 offers matching electricals in a different package.