RT0603BRD0747K5L
Yageo
Needs validationmedium risk
Parametric alternative with lower resistance (47.5kΩ vs 51kΩ) but matching package, tolerance, and TCR.
Best Alternatives to AR03BTCX5102
Finding a substitute for the AR03BTCX5102, a 51kΩ 0.1% precision thin-film resistor, requires careful parametric review. While form-factor matches are available, key electrical characteristics like resistance value, tolerance, and TCR often differ.
AI replacement insight
Electrical riskhigh
Mismatch in tolerance, TCR, and technology can impact performance in precision circuits.
Package risklow
All candidates share the same 0603 package, ensuring physical compatibility.
Sourcing risklow
Candidates are from a major manufacturer (Yageo) and are widely available.
Can it be replaced directly?
No direct drop-in replacement was found. All candidates have parametric differences requiring engineering review.
Best replacement path
If precision is critical, use a thin-film resistor like RT0603BRD0753K6L and verify the 5% resistance change. If precision can be relaxed, AC0603FR-0749K9L is an automotive-grade option with a very close resistance value.
Main risk
The primary risk is substituting a lower-precision resistor (wider tolerance, higher TCR) for a precision one, which can affect circuit accuracy and stability.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | AR03BTCX5102 | RT0603BRD0747K5L | RT0603BRD0753K6L | RT0603BRD0754K9L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 (1608 Metric) | 0603 | 0603 | 0603 | 0603 — Same EIA package size.; RT0603BRD0753K6L: Same EIA package size.; RT0603BRD0754K9L: Same EIA package size.; AC0603FR-0749K9L: Same EIA package size. |
| Resistance | 51 kΩ | 47.5 kΩ | 53.6 kΩ | 54.9 kΩ | 47.5 kΩ / 53.6 kΩ / 54.9 kΩ / 49.9 kΩ — Resistance is 6.8% lower. Requires circuit validation.; RT0603BRD0753K6L: Resistance is 5.1% higher. Requires circuit validation.; RT0603BRD0754K9L: Resistance is 7.6% higher. Requires circuit validation.; AC0603FR-0749K9L: Resistance is very close (-2.1%). |
| Tolerance | 0.1% | 0.1% | 0.1% | 0.1% | 0.1% / 1.0% — Precision tolerance matches.; RT0603BRD0753K6L: Precision tolerance matches.; RT0603BRD0754K9L: Precision tolerance matches.; AC0603FR-0749K9L: Tolerance is 10x wider, a significant downgrade. |
| Tcr | ±25 PPM/°C | 25 ppm/°C | 25 ppm/°C | 25 ppm/°C | 25 ppm/°C / ±100 ppm/°C — Temperature coefficient matches.; RT0603BRD0753K6L: Temperature coefficient matches.; RT0603BRD0754K9L: Temperature coefficient matches.; AC0603FR-0749K9L: TCR is 4x worse, indicating lower stability. |
| Technology | Thin Film | - | - | Thin Film | Thin Film — Same high-stability technology. |
| Application | AEC-Q200 (implied) | - | - | - | AEC-Q200 — Both parts are automotive grade. |
Application & sourcing insights
Questions & answers
No direct drop-in replacement was found. The best alternative depends on your circuit's needs. For precision, RT0603BRD0753K6L is a close match but has a 5% higher resistance. For non-precision use, AC0603FR-0749K9L has a very similar resistance value but is lower grade.