
Murata Electronics
AEC-Q200 qualified alternate in the same package with slightly higher capacitance (22nF vs 18nF).
Finding an alternative for the Yageo CC0402KRX7R9BB183, an 18nF 50V 0402 capacitor, involves considering parts with nearby capacitance values. Several functional alternatives exist with the same package and voltage rating.
Capacitance difference requires validation. Using a value too low may cause instability; too high may alter filter response.
All viable candidates share the same 0402 package, ensuring physical compatibility.
No direct drop-in replacement with identical 18nF capacitance was found in this review. However, several parts with slightly different capacitance values are available and may work after engineering review.
Use an AEC-Q200 qualified part with a nearby capacitance value, such as GCM155R71H223KA55D (22nF) or GCM155R71H153KA55D (15nF), after circuit validation.
The primary risk is the change in capacitance, which can affect filter characteristics, timing constants, or the stability of power rails and control loops.

Murata Electronics
AEC-Q200 qualified alternate in the same package with slightly higher capacitance (22nF vs 18nF).
| Feature / factor | CC0402KRX7R9BB183 | GCM155R71H223KA55D | GCM155R71H153KA55D | CC0402KRX7R9BB123 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) | 0402 (1005 metric) — Identical package ensures form-fit compatibility.; GCM155R71H153KA55D: Identical package ensures form-fit compatibility.; CC0402KRX7R9BB123: Identical package ensures form-fit compatibility. |
| Voltage | 50.0 V | 50.0 V | 50.0 V | 50.0 V | 50.0 V — Voltage rating meets requirement.; GCM155R71H153KA55D: Voltage rating meets requirement.; CC0402KRX7R9BB123: Voltage rating meets requirement. |
| Capacitance | 1.8e-08 F | 2.2e-08 F | 1.5e-08 F | 1.2e-08 F | 2.2e-08 F / 1.5e-08 F / 1.2e-08 F — Higher capacitance (+22%) may be acceptable or beneficial in decoupling applications.; GCM155R71H153KA55D: Lower capacitance (-17%) is a close value but requires circuit analysis.; CC0402KRX7R9BB123: Significantly lower capacitance (-33%) requires careful circuit analysis. |
| Application | Commercial | AEC-Q200 | AEC-Q200 | - | AEC-Q200 — Automotive grade offers higher reliability.; GCM155R71H153KA55D: Automotive grade offers higher reliability. |
The best alternatives are GCM155R71H223KA55D (22nF) or GCM155R71H153KA55D (15nF). Both are AEC-Q200 qualified and have capacitance values close to the original 18nF.