
Yageo
Excellent precision match, but nominal resistance is 1.5% higher. Requires review.
Finding a replacement for the ARG02BTC2002, a 20kΩ high-precision thin film resistor, requires matching its tight ±0.1% tolerance and ±25ppm/°C TCR. While no exact match exists, several parametric alternatives are available.
Using a general-purpose resistor (Thick Film, >1% tol) will likely cause circuit failure or performance degradation.
Using a precision resistor with slightly different resistance requires validation but is a low risk.
All viable candidates share the same 0402 package, ensuring physical compatibility.
No direct drop-in replacement with identical 20kΩ resistance was found. The closest alternatives are precision resistors with slightly different nominal resistance values.
Use a Yageo RT series thin film resistor like RT0402BRD0720K3L, but verify the circuit's tolerance to a 1.5% resistance shift.
The primary risk is using a part with a relaxed tolerance, higher TCR, or different technology (Thick Film), which will compromise circuit precision.

Yageo
Excellent precision match, but nominal resistance is 1.5% higher. Requires review.
| Feature / factor | ARG02BTC2002 | RT0402BRD0720K3L | RT0402BRD0720K5L | RT0402BRD0721KL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Form factor matches.; RT0402BRD0720K5L: Form factor matches.; RT0402BRD0721KL: Form factor matches.; RTT022002FTH: Form factor matches. |
| Resistance | 20kΩ | 20.3kΩ | 20.5kΩ | 21kΩ | 20.3kΩ / 20.5kΩ / 21kΩ — 1.5% higher resistance. Requires circuit validation.; RT0402BRD0720K5L: 2.5% higher resistance. Requires circuit validation.; RT0402BRD0721KL: 5% higher resistance. Requires circuit validation. |
| Tolerance | ±0.1% | ±0.1% | ±0.1% | ±0.1% | ±0.1% / ±1% — Precision tolerance matches.; RT0402BRD0720K5L: Precision tolerance matches.; RT0402BRD0721KL: Precision tolerance matches.; RTT022002FTH: Significant downgrade from precision target. |
| Tcr | ±25ppm/°C | 25 ppm/°C | 25 ppm/°C | 25 ppm/°C | 25 ppm/°C / ±100 ppm/°C — Temperature stability matches.; RT0402BRD0720K5L: Temperature stability matches.; RT0402BRD0721KL: Temperature stability matches.; RTT022002FTH: Worse temperature stability. |
| Technology | Thin Film | Thin Film | - | - | Thin Film / Thick Film — Technology matches.; RTT022002FTH: Different technology, lower stability. |
The best alternatives are precision thin film resistors from Yageo's RT series, such as RT0402BRD0720K3L. It matches all precision specs but has a 20.3kΩ resistance, which requires engineering review.