RTT022002FTH
RALEC
Needs validationlow risk
An excellent 20kΩ 0402 alternative from RALEC with a tighter ±1% tolerance for higher precision.
Best Alternatives to FRC0402J203 TS
FRC0402J203 TS is a general-purpose 20kΩ, 5% tolerance, 1/16W resistor in a 0402 package. Several pin-compatible alternatives with higher precision are readily available, offering a straightforward upgrade path for most designs.
AI replacement insight
Electrical risklow
For 1% tolerance parts, risk is low. For parts with different nominal resistance, risk is medium and requires review.
Package risklow
All suggested candidates use the same 0402 package, ensuring physical compatibility.
Can it be replaced directly?
Yes, several direct replacements are available. WR04X2002FTL from Walsin and RTT022002FTH from RALEC are excellent pin-compatible alternatives with better tolerance.
Best replacement path
The best replacement path is to use an upgraded-precision part like WR04X2002FTL or RTT022002FTH. They match the critical 20kΩ resistance and 0402 package while offering a tighter ±1% tolerance, which is a safe and beneficial upgrade for nearly all applications.
Main risk
The main risk when substituting is using a part with a different nominal resistance. While some alternatives are within the target's tolerance, they are not centered on 20kΩ and require circuit analysis.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | FRC0402J203 TS | RTT022002FTH | WR04X2002FTL | RT0402BRD0720K3L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Same package ensures physical fit.; WR04X2002FTL: Same package ensures physical fit.; RT0402BRD0720K3L: Same package ensures physical fit.; RT0402BRD0720K5L: Same package ensures physical fit. |
| Resistance | 20 kΩ | 20 kΩ | 20 kΩ | 20.3 kΩ | 20 kΩ / 20.3 kΩ / 20.5 kΩ — Identical nominal resistance.; WR04X2002FTL: Identical nominal resistance.; RT0402BRD0720K3L: 1.5% higher resistance. Well within target's tolerance.; RT0402BRD0720K5L: 2.5% higher resistance. Well within target's tolerance. |
| Tolerance | ±5% | ±1% | ±1% | ±0.1% | ±1% / ±0.1% — Tighter tolerance is a safe upgrade.; WR04X2002FTL: Tighter tolerance is a safe upgrade.; RT0402BRD0720K3L: Significantly higher precision.; RT0402BRD0720K5L: Significantly higher precision. |
| Power | 1/16 W | 1/16 W | 1/16 W | - | 1/16 W — Same power rating.; WR04X2002FTL: Same power rating. |
| Tcr | ±100 ppm/°C | - | ≤ ±100 ppm/°C | 25 ppm/°C | ≤ ±100 ppm/°C / 25 ppm/°C — Improved or equal temperature stability.; RT0402BRD0720K3L: Much better temperature stability.; RT0402BRD0720K5L: Much better temperature stability. |
Application & sourcing insights
Questions & answers
The best alternatives for FRC0402J203 TS are WR04X2002FTL by Walsin and RTT022002FTH by RALEC. Both are 20kΩ 0402 resistors with a tighter ±1% tolerance, making them excellent, higher-precision upgrades.