RTT025002FTH
RALEC
Needs validationlow risk
A 0402 resistor with identical power, tolerance, and TCR, but with a slightly different resistance value (50kΩ vs 49.9kΩ).
Best Alternatives to RC0402FR-0749K9L
Find and compare verified alternatives for the Yageo RC0402FR-0749K9L, a 49.9kΩ 1% 0.0625W 0402 thick film chip resistor. Review pin-compatible options, functional upgrades, and parametric alternatives.
AI replacement insight
Package riskmedium
Some alternatives are in larger 0603 or 0805 packages, requiring a board spin.
Electrical riskmedium
Parametric alternatives have different resistance values that must be validated in-circuit.
Can it be replaced directly?
Direct replacement for RC0402FR-0749K9L should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with Datasheet verified or Strong match candidates for RC0402FR-0749K9L, then review parametric alternatives for package and electrical fit.
Main risk
The main risk is substituting with a part that has a different resistance value or a larger physical package, requiring circuit analysis or PCB redesign.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | RC0402FR-0749K9L | RTT025002FTH | 0603WAF4992T5E | RC0402FR-0751KL | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 49.9kΩ | 50kΩ | - | - | 51kΩ — 2.2% higher resistance. Requires circuit analysis. |
| Package | 0402 | 0402 | - | - | 0402 — matched |
| Power | 0.0625W | 0.0625W | - | - | 0.0625W — matched |
| Tolerance | ±1% | ±1% | - | - | ±1% — matched |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | - | - | ±100 ppm/°C — matched |
Application & sourcing insights
Questions & answers
Verified drop-in options for RC0402FR-0749K9L 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.