
Yageo
Strong pin-compatible alternative with identical key specs and higher voltage rating.
Finding a substitute for the RS-03K223JT, a 22kΩ 5% 0.1W 0603 resistor, involves matching key parameters. Several strong pin-compatible and high-precision upgrade options are available from manufacturers like Yageo and Viking Tech.
All suggested alternatives are in the same 0603 package.
Some options are Thin Film vs the target's Thick Film. One option has a slightly different resistance value. These require review.
Alternatives are from major manufacturers like Yageo and Viking Tech, suggesting good availability.
Direct replacement for RS-03K223JT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
For a direct, low-risk replacement, RC0603JR-0722KL from Yageo is the best option as it matches all key parameters. For applications that can benefit from higher precision, ARG03BTC2202 is a suitable upgrade, but the technology change should be reviewed.
The main risk when substituting is a mismatch in technology (Thick vs. Thin Film), which can affect pulse withstanding capability. Alternatives with different nominal resistance values also require circuit analysis.

Yageo
Strong pin-compatible alternative with identical key specs and higher voltage rating.
| Feature / factor | RS-03K223JT | RC0603JR-0722KL | ARG03BTC2202 | RT0603BRD0722KL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Matches target package.; ARG03BTC2202: Matches target package.; RT0603BRD0722KL: Matches target package.; RT0603BRD0722K1L: Matches target package. |
| Resistance | 22kΩ | 22kΩ | - | - | 22kΩ / 22.1kΩ — Identical nominal resistance.; RT0603BRD0722K1L: 0.45% higher than target, but within target's 5% tolerance. |
| Tolerance | ±5% | ±5% | ±0.1% | ±0.1% | ±5% / ±0.1% — Matches target tolerance.; ARG03BTC2202: Significantly tighter tolerance.; RT0603BRD0722KL: Significantly tighter tolerance.; RT0603BRD0722K1L: Significantly tighter tolerance. |
| Technology | Thick Film | Thick Film | Thin Film | Thin Film | Thick Film / Thin Film — Matches target technology.; ARG03BTC2202: Different film technology may affect pulse handling.; RT0603BRD0722KL: Different film technology may affect pulse handling.; RT0603BRD0722K1L: Different film technology. |
| Voltage | 50V | 75V | - | - | 75V — Higher voltage rating provides more margin. |
| Tcr | ±100ppm/℃ | - | ±25ppm/°C | 25 ppm/°C | ±25ppm/°C / 25 ppm/°C — Much better temperature stability.; RT0603BRD0722KL: Much better temperature stability. |
Verified drop-in options for RS-03K223JT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.