
TAIYO YUDEN
A robust upgrade with higher voltage (100V), a more stable X7S dielectric, and tighter tolerance in the same 0805 package.
CL21F105ZBFNNNE is a general-purpose 1µF 50V ceramic capacitor in an 0805 package with a Y5V dielectric. While direct Y5V replacements exist, numerous upgrade options with more stable X7R or X7S dielectrics offer improved performance for most applications.
Dielectric change from Y5V to X7R/X7S is an upgrade in stability, but the change in capacitance profile must be verified for the application.
All candidates share the same 0805 package, ensuring physical compatibility on the PCB.
While no direct replacements with the same Y5V dielectric are listed, several superior upgrades with more stable X7R or X7S dielectrics are available. These are generally better but require review.
Upgrading to an X7R or X7S dielectric capacitor with the same or higher voltage rating is the recommended path for improved performance and stability.
The primary risk is the change in dielectric from Y5V to a more stable X7R/X7S, which alters capacitance behavior with temperature and DC bias.

TAIYO YUDEN
A robust upgrade with higher voltage (100V), a more stable X7S dielectric, and tighter tolerance in the same 0805 package.
| Feature / factor | CL21F105ZBFNNNE | HMK212BC7105KG-TE | TCC0805X7R105K101FT | TCC0805X7R105J500FT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 | 0805 (2012 Metric) | 0805 (2012 Metric) — Package size matches.; TCC0805X7R105K101FT: Package size matches.; TCC0805X7R105J500FT: Package size matches.; TCC0805X7R105K500DT: Package size matches. |
| Voltage | 50.0V | 100.0V | 100.0V | 50.0V | 100.0V / 50.0V — Higher voltage rating provides more margin.; TCC0805X7R105K101FT: Higher voltage rating provides more margin.; TCC0805X7R105J500FT: Voltage rating matches.; TCC0805X7R105K500DT: Voltage rating matches. |
| Dielectric | Y5V | X7S | X7R | X7R | X7S / X7R — Upgrade to a more stable dielectric.; TCC0805X7R105K101FT: Upgrade to a more stable dielectric.; TCC0805X7R105J500FT: Upgrade to a more stable dielectric.; TCC0805X7R105K500DT: Upgrade to a more stable dielectric. |
| Tolerance | +80%/-20% | ±10.0% | ±10.0% | ±5.0% | ±10.0% / ±5.0% — Tighter tolerance is an upgrade.; TCC0805X7R105K101FT: Tighter tolerance is an upgrade.; TCC0805X7R105J500FT: Much tighter tolerance is a significant upgrade.; TCC0805X7R105K500DT: Tighter tolerance is an upgrade. |
The best alternatives are often those that offer upgraded performance. Consider HMK212BC7105KG-TE or TCC0805X7R105K101FT, as they provide a higher 100V rating and a much more stable X7S/X7R dielectric.