RT0402BRD0721KL
Yageo
Needs validationmedium risk
A potential upgrade with same resistance but better tolerance and TCR; technology differs.
Best Alternatives to RC-02K2102FT
RC-02K2102FT is a standard 21kΩ 1% 0402 thick film resistor. While no exact cross was found, several alternatives are available, including a high-precision upgrade and others with slight resistance variations.
AI replacement insight
Electrical riskmedium
Thin Film technology has different noise/pulse characteristics. Parametric alternatives have different resistance values.
Package risklow
All candidates share the same 0402 package, ensuring physical compatibility.
Can it be replaced directly?
No exact direct replacement was found in the candidates. RT0402BRD0721KL is the closest electrically but differs in technology. Other candidates have slightly different resistance values.
Best replacement path
RT0402BRD0721KL offers an upgrade in precision (0.1% tol, 25ppm TCR) but requires verifying its Thin Film technology is acceptable for the application.
Main risk
The primary risks are technology mismatch (Thick vs. Thin Film) and resistance value deviation in parametric alternatives.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | RC-02K2102FT | RT0402BRD0721KL | RC-02K2052FT | RC-02K2152FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Form and fit are identical.; RC-02K2052FT: Form and fit are identical.; RC-02K2152FT: Form and fit are identical.; WR04X2002FTL: Form and fit are identical. |
| Resistance | 21 kΩ | 21 kΩ | 20.5 kΩ | 21.5 kΩ | 21 kΩ / 20.5 kΩ / 21.5 kΩ / 20 kΩ — Resistance value is identical.; RC-02K2052FT: Resistance is 2.4% lower; verify circuit impact.; RC-02K2152FT: Resistance is 2.4% higher; verify circuit impact.; WR04X2002FTL: Resistance is 4.8% lower; verify circuit impact. |
| Technology | Thick Film | Thin Film | Thick Film | Thick Film | Thin Film / Thick Film — Technology differs; review for noise, stability, and pulse handling.; RC-02K2052FT: Technology is identical.; RC-02K2152FT: Technology is identical.; WR04X2002FTL: Technology is identical. |
| Tolerance | ±1% | ±0.1% | ±1% | ±1% | ±0.1% / ±1% — Candidate has tighter tolerance.; RC-02K2052FT: Tolerance is identical.; RC-02K2152FT: Tolerance is identical.; WR04X2002FTL: Tolerance is identical. |
| Tcr | ±100 ppm/°C | 25 ppm/°C | ±100 ppm/°C | ±100 ppm/°C | 25 ppm/°C / ±100 ppm/°C — Candidate has better temperature stability.; RC-02K2052FT: TCR is identical.; RC-02K2152FT: TCR is identical. |
Application & sourcing insights
Questions & answers
The best alternative is RT0402BRD0721KL, which offers higher precision (0.1% tolerance, 25ppm TCR). However, it uses Thin Film technology, which must be verified for your application, as the original is Thick Film.