
Yageo
A strong pin-compatible alternative with identical resistance, tolerance, power, and package.
RS-03K6812FT is a common 68.1kΩ, 1% tolerance, 0.1W resistor in a 0603 package. Several pin-compatible alternatives are available, with RC0603FR-0768K1L being a strong direct replacement.
The 0603 package is highly standardized, making physical replacement straightforward.
Must match resistance, tolerance, and power. Using a part with 5% tolerance or a different resistance value requires circuit validation.
This is a common resistor value available from many manufacturers, reducing sourcing risk.
Direct replacement for RS-03K6812FT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The best direct replacement is Yageo's RC0603FR-0768K1L, which matches all key specifications. For applications requiring higher reliability, the automotive-grade AC0603FR-0768KL is an excellent upgrade.
The main risk when substituting is selecting a part with a wider tolerance (e.g., ±5% instead of ±1%) or a different nominal resistance value, which can impact circuit performance.

Yageo
A strong pin-compatible alternative with identical resistance, tolerance, power, and package.
| Feature / factor | RS-03K6812FT | RC0603FR-0768K1L | AC0603FR-0768KL | 0603WAJ0683T5E | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 68.1 kΩ | 68.1 kΩ | 68 kΩ | 68 kΩ | 68.1 kΩ / 68 kΩ — Exact match.; AC0603FR-0768KL: Negligible -0.15% difference, well within tolerance.; 0603WAJ0683T5E: Negligible difference in nominal value.; FRC0603J683 TS: Negligible difference in nominal value. |
| Tolerance | ±1% | ±1% | ±1% | ±5% | ±1% / ±5% — Exact match.; AC0603FR-0768KL: Exact match.; 0603WAJ0683T5E: Wider tolerance is a significant downgrade.; FRC0603J683 TS: Wider tolerance is a significant downgrade. |
| Power | 0.1 W | 0.1 W | 0.1 W | 0.1 W | 0.1 W — Exact match.; AC0603FR-0768KL: Exact match.; 0603WAJ0683T5E: Exact match.; FRC0603J683 TS: Exact match. |
| Tcr | ±100ppm/℃ | ±100 ppm/°C | - | - | ±100 ppm/°C — Exact match. |
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Identical package ensures form-fit compatibility.; AC0603FR-0768KL: Identical package.; 0603WAJ0683T5E: Identical package.; FRC0603J683 TS: Identical package. |
| Application | Commercial | - | AEC-Q200 | - | AEC-Q200 — Candidate is automotive grade, an upgrade. |
Verified drop-in options for RS-03K6812FT 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.