FRC2512F49R9TS
FOJAN
Needs validationmedium risk
A 2512 49.9Ω 1% resistor with the same power rating; requires thermal validation.
Best Alternatives to RC-12K49R9FT
Finding a substitute for the RC-12K49R9FT, a 1W 49.9Ω 1% 2512 resistor, involves checking key parameters. Several alternatives exist with similar specs, but may require verification of resistance value and power handling.
AI replacement insight
Electrical riskmedium
Candidates lack the recommended 1.5x power rating safety margin.
Package risklow
Most candidates match the 2512 package, ensuring form-fit compatibility.
Can it be replaced directly?
No verified direct drop-in replacement has been identified. Candidates like FRC2512F49R9TS match key specs but lack the recommended power safety margin.
Best replacement path
FRC2512F49R9TS and 25121WF499JT4E offer the same resistance and package, but require verification as their power rating provides no extra margin.
Main risk
The primary risk is thermal. Substitutes with the same 1W power rating may not perform identically under load, potentially affecting reliability.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | RC-12K49R9FT | FRC2512F49R9TS | 25121WF499JT4E | RC-12K51R0FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2512 | 2512 | 2512 | 2512 | 2512 — Matches target package.; 25121WF499JT4E: Matches target package.; RC-12K51R0FT: Matches target package.; RC2512FK-0751RL: Matches target package. |
| Resistance | 49.9 Ω | 49.9 Ω | 49.9 Ω | 51.0 Ω | 49.9 Ω / 51.0 Ω — Identical resistance value.; 25121WF499JT4E: Identical resistance value.; RC-12K51R0FT: Resistance is ~2.2% higher.; RC2512FK-0751RL: Resistance is ~2.2% higher. |
| Tolerance | 1.0 % | 1.0 % | - | - | 1.0 % — Identical tolerance. |
| Power | 1.0 W | 1.0 W | 1.0 W | 1.0 W | 1.0 W — Equal power rating, no safety margin per ER-RES-003.; 25121WF499JT4E: Equal power rating, no safety margin per ER-RES-003.; RC-12K51R0FT: Equal power rating, no safety margin.; RC2512FK-0751RL: Equal power rating, no safety margin. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | Not in specs | - | ±100 ppm/°C / Not in specs — Identical temperature coefficient.; 25121WF499JT4E: TCR missing from structured data, requires datasheet check. |
Application & sourcing insights
Questions & answers
FRC2512F49R9TS is a strong candidate, matching resistance, tolerance, and package. However, its 1W power rating is identical to the original, so thermal performance must be verified in your application.