ARG03BTC4991
Viking Tech
Needs validationlow risk
A strong pin-to-pin candidate from Viking Tech with identical key electrical and physical specifications.
Best Alternatives to TD03G4991BT
Find pin-compatible and parametric alternatives for the FH TD03G4991BT, a 4.99kΩ 0.1% 0603 thin film resistor. This guide helps navigate key differences in resistance, TCR, and sourcing.
AI replacement insight
Electrical riskmedium
Using parts with different resistance or TCR requires circuit re-evaluation.
Package risklow
All presented candidates use the same 0603 package.
Sourcing risklow
This is a standard resistor value and package with multiple vendors.
Can it be replaced directly?
Yes, ARG03BTC4991 is a potential pin-to-pin replacement for TD03G4991BT, matching resistance, tolerance, power, TCR, and package.
Best replacement path
Start with Datasheet verified or Strong match candidates for TD03G4991BT, then review parametric alternatives for package and electrical fit.
Main risk
The main risk is using a part with a different resistance value or a wider TCR, which can affect circuit precision, especially in voltage dividers or feedback loops.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | TD03G4991BT | ARG03BTC4991 | TD03G4701BT | TD03G5101BT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Same package size and pin count.; TD03G4701BT: Same package size.; TD03G5101BT: Same package size. |
| Resistance | 4.99kΩ | 4.99kΩ | 4.7kΩ | 5.1kΩ | 4.99kΩ / 4.7kΩ / 5.1kΩ — Resistance values are identical.; TD03G4701BT: Resistance is ~5.8% lower.; TD03G5101BT: Resistance is ~2.2% higher. |
| Tolerance | 0.1% | 0.1% | 0.1% | 0.1% | 0.1% — Tolerance is identical.; TD03G4701BT: Tolerance is identical.; TD03G5101BT: Tolerance is identical. |
| Power | 0.1W | 0.1W | - | - | 0.1W — Power rating is identical. |
| Tcr | ±25ppm/℃ | ±25ppm/℃ | ±25ppm/℃ | ±25ppm/℃ | ±25ppm/℃ — Temperature coefficient is identical.; TD03G4701BT: TCR is identical.; TD03G5101BT: TCR is identical. |
Application & sourcing insights
Questions & answers
Verified drop-in options for TD03G4991BT 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.