
Chaozhou Three-Circle (Group) Co., Ltd.
An upgraded alternative with tighter ±5% tolerance and better X7R temperature performance.
The Samsung CL21A105KBCLNNC is a general-purpose 1µF 50V 0805 ceramic capacitor with an X5R dielectric. Common and reliable alternatives are readily available, often featuring an upgraded X7R dielectric for a wider operating temperature range.
Most alternatives are upgrades (X7R dielectric, higher voltage, or tighter tolerance). Risk is low if the application can tolerate the change.
All suggested alternatives are in the same 0805 package, ensuring form and fit compatibility.
Yes, several direct replacements exist. The most common path is substituting with an X7R-dielectric capacitor, which offers a wider temperature range and is generally considered an upgrade.
Upgrading to a pin-compatible X7R dielectric capacitor like UMK212B7105KG-T for improved temperature performance.
The primary consideration is the dielectric material. The target is X5R, while most alternatives are X7R. This affects the operating temperature range and capacitance stability.

Chaozhou Three-Circle (Group) Co., Ltd.
An upgraded alternative with tighter ±5% tolerance and better X7R temperature performance.
| Feature / factor | CL21A105KBCLNNC | TCC0805X7R105J500FT | TCC0805X7R105K101FT | TCC0805X7R105K500DT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 | 0805 | 0805 (2012 Metric) — Package dimensions are identical.; TCC0805X7R105K101FT: Package dimensions are compatible.; TCC0805X7R105K500DT: Package dimensions are compatible.; TCC0805X7R105K500DTS: Package dimensions are compatible. |
| Dielectric | X5R | X7R | X7R | X7R | X7R — Candidate has superior temperature range (-55°C to 125°C).; TCC0805X7R105K101FT: Candidate has superior temperature range (-55°C to 125°C).; TCC0805X7R105K500DT: Candidate has superior temperature range (-55°C to 125°C).; TCC0805X7R105K500DTS: Candidate has superior temperature range (-55°C to 125°C). |
| Tolerance | ±10% | ±5% | - | - | ±5% — Tighter tolerance may improve circuit precision. |
| Voltage | 50V | - | 100V | 50V | 100V / 50V — Higher voltage rating provides more design margin.; TCC0805X7R105K500DT: matched; TCC0805X7R105K500DTS: matched |
The best alternatives, like Taiyo Yuden's UMK212B7105KG-T, offer the same core specs but with an upgraded X7R dielectric, providing a wider operating temperature range up to 125°C at no performance cost.