1206W4F4991T5E
UNI-ROYAL
Needs validationlow risk
A pin-compatible 1206 resistor from UNI-ROYAL with matching 4.99kΩ resistance, 1% tolerance, and 0.25W power.
Best Alternatives to RS-06K4991FT
The FH RS-06K4991FT is a common 1206 thick film chip resistor with a 4.99kΩ resistance, 1% tolerance, and 0.25W power rating. Several pin-compatible and parametric alternatives are available from various manufacturers.
AI replacement insight
Electrical risklow
Low for pin-compatible parts; medium for parametric alternatives due to resistance change.
Package risklow
All recommended candidates use the standard 1206 package, minimizing layout changes.
Sourcing risklow
This is a common resistor value with multiple manufacturers, ensuring a stable supply chain.
Can it be replaced directly?
Direct replacement for RS-06K4991FT 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 RS-06K4991FT, then review parametric alternatives for package and electrical fit.
Main risk
The main risk involves using a parametric alternative with a different resistance value, which could alter circuit behavior.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | RS-06K4991FT | 1206W4F4991T5E | FRC1206F4991TS | RS-06K4701FT | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 4.99 kΩ | 4.99 kΩ | 4.99 kΩ | 4.7 kΩ | 4.99 kΩ / 4.7 kΩ / 5.1 kΩ — Resistance value matches.; FRC1206F4991TS: Resistance value matches.; RS-06K4701FT: Resistance is ~5.8% lower. Requires circuit evaluation.; RS-06K5101FT: Resistance is ~2.2% higher. Requires circuit evaluation. |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% — Tolerance matches.; FRC1206F4991TS: Tolerance matches.; RS-06K4701FT: Tolerance matches.; RS-06K5101FT: Tolerance matches. |
| Power | 0.25 W | 0.25 W | 0.25 W | 0.25 W | 0.25 W — Power rating matches.; FRC1206F4991TS: Power rating matches.; RS-06K4701FT: Power rating matches.; RS-06K5101FT: Power rating matches. |
| Package | 1206 | 1206 | 1206 | 1206 | 1206 — Package size matches.; FRC1206F4991TS: Package size matches.; RS-06K4701FT: Package size matches.; RS-06K5101FT: Package size matches. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | ±100 ppm/°C | - | ±100 ppm/°C — Temperature coefficient matches.; FRC1206F4991TS: Temperature coefficient matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for RS-06K4991FT 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.