RT0402BRD0720K3L
Yageo
Needs validationmedium risk
A parametric alternative with a lower resistance of 20.3kΩ, but matching package, tolerance, and TCR.
Best Alternatives to RT0402BRD0721KL
The Yageo RT0402BRD0721KL is a high-precision 21kΩ thin film chip resistor in a 0402 package, featuring a tight ±0.1% tolerance and a low 25 ppm/°C TCR. It is ideal for precision analog circuits and measurement equipment.
AI replacement insight
Electrical riskhigh
Target is a precision component; parametric deviations can impact system performance.
Package risklow
0402 is a standard SMT package with consistent land patterns.
Can it be replaced directly?
No exact direct replacement has been identified in this batch. The closest candidates have different resistance values or are lower-precision parts that require careful engineering review.
Best replacement path
Find a thin film, 0402, 1/16W resistor with 21kΩ resistance, ±0.1% tolerance, and ≤25 ppm/°C TCR.
Main risk
The primary risk is compromising circuit precision by using a substitute with a different nominal resistance, wider tolerance, or higher TCR.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | RT0402BRD0721KL | RT0402BRD0720K3L | RT0402BRD0720K5L | RC-02K2102FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Package size matches.; RT0402BRD0720K5L: Package size matches.; RC-02K2102FT: Package size matches. |
| Resistance | 21 kΩ | 20.3 kΩ | 20.5 kΩ | 21 kΩ | 20.3 kΩ / 20.5 kΩ / 21 kΩ — -3.33% deviation from target. Requires circuit validation.; RT0402BRD0720K5L: -2.38% deviation from target. Requires circuit validation.; RC-02K2102FT: Nominal resistance matches. |
| Tolerance | ±0.1% | ±0.1% | ±0.1% | ±1% | ±0.1% / ±1% — Precision tolerance matches.; RT0402BRD0720K5L: Precision tolerance matches.; RC-02K2102FT: Tolerance is 10x wider than target. Significant downgrade. |
| Tcr | 25 ppm/°C | 25 ppm/°C | 25 ppm/°C | ±100ppm/℃ | 25 ppm/°C / ±100ppm/℃ — Temperature stability matches.; RT0402BRD0720K5L: Temperature stability matches.; RC-02K2102FT: TCR is 4x worse than target. Lower stability. |
| Technology | Thin Film | - | Thin Film | Thick Film | Thin Film / Thick Film — Resistor technology matches.; RC-02K2102FT: Different technology may affect noise and stability. |
Application & sourcing insights
Questions & answers
The best alternatives are typically other thin film resistors in the same family with the closest possible resistance, such as Yageo's RT0402BRD series. Always verify the resistance value and tolerance are acceptable for your application.