126RV0104
KNSCHA
Needs validationlow risk
An excellent upgrade with a higher voltage rating and better ripple current handling in the same package.
Best Alternatives to RST47UF50V038
The KNSCHA RST47UF50V038 is a 47uF 50V aluminum electrolytic capacitor in a 6.3x7.7mm SMD package. Several suitable alternatives are available, including direct pin-compatible replacements and upgrade options with higher performance.
AI replacement insight
Package risklow
The 6.3x7.7mm SMD package is standard, and multiple candidates match the footprint.
Electrical riskmedium
ESR and ripple current must be verified. Using a part with lower ripple rating or much higher ESR is a primary risk.
Sourcing risklow
This is a common capacitor value with multiple manufacturers, indicating good sourcing availability.
Can it be replaced directly?
Direct replacement for RST47UF50V038 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The best replacement path is the upgrade part 126RV0104 from the same manufacturer, which offers a higher voltage rating (63V) and superior ripple current handling in the same package.
Main risk
The main risk when substituting capacitors is overlooking secondary electrical parameters. While capacitance, voltage, and package may match, differences in Equivalent Series Resistance (ESR) and ripple current rating can affect circuit stability and component lifetime.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | RST47UF50V038 | 126RV0104 | RVT47UF50V67RV0029 | RVT1H470M0607 47UF 50V | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMD, 6.3mm x 7.7mm | SMD, 6.3mm x 7.7mm | SMD, 6.3mm x 7.7mm | 6.3mm x 7.7mm | SMD, 6.3mm x 7.7mm — Identical package dimensions and type.; RVT47UF50V67RV0029: Identical package dimensions and type.; RVT1H470M0607 47UF 50V: Identical package dimensions. |
| Voltage | 50V | 63V | - | - | 63V — Higher voltage rating provides more design margin. |
| Ripple Current | 63mA | 90mA | 66mA | 145mA (per datasheet) | 90mA / 66mA / 145mA (per datasheet) — Significantly higher ripple current handling.; RVT47UF50V67RV0029: Slightly higher ripple current handling.; RVT1H470M0607 47UF 50V: Significantly higher ripple current. Requires datasheet verification. |
| Capacitance Tolerance | 47uF, 20% | 47uF, 20% | - | - | 47uF, 20% — Identical capacitance and tolerance. |
| Capacitance Voltage Tolerance | 47uF, 50V, 20% | - | 47uF, 50V, 20% | 47uF, 50V, 20% | 47uF, 50V, 20% — Identical primary electrical values.; RVT1H470M0607 47UF 50V: Identical primary electrical values. |
| Temperature | -40°C to +105°C | - | -55°C to +105°C | - | -55°C to +105°C — Wider operating temperature range. |
| Manufacturer | KNSCHA | - | - | DMBJ | DMBJ — Cross-vendor alternative. |
Application & sourcing insights
Questions & answers
Verified drop-in options for RST47UF50V038 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.