
Walsin Technology Corporation
Strong pin-to-pin alternate with matching package, capacitance, voltage, tolerance, and equivalent NP0 dielectric.
Finding a substitute for the HRE CGA0805C0G222J500KT, a 2.2nF 50V 0805 ceramic capacitor, requires matching its stable C0G dielectric for precision applications. Several alternatives exist, with varying levels of compatibility.
Using an X7R dielectric instead of C0G in timing, tuning, or filtering circuits can cause malfunction due to capacitance instability.
Many alternatives exist in the same 0805 package, ensuring physical compatibility.
Yes, a direct pin-compatible replacement is available. The Walsin 0805N222J500CT is an excellent candidate, matching the 0805 package, 2.2nF capacitance, 50V rating, ±5% tolerance, and stable NP0 (C0G) dielectric.
The strongest replacement is 0805N222J500CT from Walsin, which matches all key specifications including the stable C0G/NP0 dielectric.
The primary risk is substituting with a capacitor that has a different dielectric, such as X7R. This can compromise circuit performance and stability.

Walsin Technology Corporation
Strong pin-to-pin alternate with matching package, capacitance, voltage, tolerance, and equivalent NP0 dielectric.
| Feature / factor | CGA0805C0G222J500KT | 0805N222J500CT | CL21B222JBANNNC | CGA0805X7R222K500KT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 metric) | 0805 (2012 Metric) / 0805 (2012 metric) — Form factor matches.; CL21B222JBANNNC: Form factor matches.; CGA0805X7R222K500KT: Form factor matches.; FCC0805B222K500DT: Form factor matches. |
| Dielectric | C0G | NP0 | X7R | X7R | NP0 / X7R — NP0 is equivalent to C0G, ensuring high stability.; CL21B222JBANNNC: Weaker Class II dielectric; capacitance varies with temp/voltage.; CGA0805X7R222K500KT: Weaker Class II dielectric; capacitance varies with temp/voltage.; FCC0805B222K500DT: Weaker Class II dielectric; capacitance varies with temp/voltage. |
| Capacitance | 2.2 nF | 2.2 nF | 2.2 nF | - | 2.2 nF — Capacitance matches.; CL21B222JBANNNC: Nominal capacitance matches. |
| Voltage | 50 V | 50 V | - | - | 50 V — Voltage rating matches. |
| Tolerance | ±5% | ±5% | ±5% | ±10% | ±5% / ±10% — Tolerance matches.; CL21B222JBANNNC: Tolerance matches.; CGA0805X7R222K500KT: Wider tolerance than target.; FCC0805B222K500DT: Wider tolerance than target. |
The best alternative to CGA0805C0G222J500KT is the Walsin 0805N222J500CT. It is a strong match across all critical parameters: 2.2nF, 50V, ±5%, 0805 package, and an equivalent NP0 dielectric for high stability.