Needs validationhigh risk
A parametric alternative with the same package and ratings, but different dielectric and wider tolerance.
Best Alternatives to CK45-B3DD222KYVNA
Finding a substitute for the TDK CK45-B3DD222KYVNA involves navigating critical electrical parameters. This 2.2nF, 2kV disc capacitor's 'B' dielectric offers stability that is hard to match in available alternatives.
AI replacement insight
Electrical riskhigh
Dielectric and tolerance mismatch can alter circuit performance, especially in timing or filtering applications.
Package risklow
Kept candidates match the through-hole disc package, but lead spacing and body size must be double-checked.
Can it be replaced directly?
No direct drop-in replacements were found. All form-fit compatible candidates have weaker electrical characteristics, specifically a less stable dielectric and wider tolerance, which requires engineering validation.
Best replacement path
Search for a 2.2nF, 2kV (or higher), ±10% disc capacitor with a B, X7R, or X5R dielectric for better performance matching.
Main risk
The primary risk is the change in dielectric material from 'B' to less stable types like Y5P/Y5U/Y5V, which significantly affects capacitance over temperature, DC bias, and aging.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | CK45-B3DD222KYVNA | R08E1B222MN0B0S0N0 | A09F1D222MN0B0S0N0 | S07F1E222MN0B0S0N0 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Disc | Disc | Disc | Disc | Disc — Form factor is compatible.; A09F1D222MN0B0S0N0: Form factor is compatible.; S07F1E222MN0B0S0N0: Form factor is compatible.; T08F1D222MN0B0S0N0: Form factor is compatible. |
| Capacitance | 2.2 nF | 2.2 nF | - | - | 2.2 nF — matched |
| Voltage | 2000 V | 2000 V | 6000 V | 3000 V | 2000 V / 6000 V / 3000 V / 4000 V — matched; A09F1D222MN0B0S0N0: Higher voltage rating provides more margin.; S07F1E222MN0B0S0N0: Higher voltage rating provides more margin.; T08F1D222MN0B0S0N0: Higher voltage rating provides more margin. |
| Dielectric | B | Y5P | Y5V | Y5U | Y5P / Y5V / Y5U — Weaker stability over temperature.; A09F1D222MN0B0S0N0: Significantly weaker stability over temp/voltage.; S07F1E222MN0B0S0N0: Significantly weaker stability over temp/voltage.; T08F1D222MN0B0S0N0: Significantly weaker stability over temp/voltage. |
| Tolerance | ±10% | ±20% | ±20% | ±20% | ±20% — Wider tolerance may affect circuit precision.; A09F1D222MN0B0S0N0: Wider tolerance may affect circuit precision.; S07F1E222MN0B0S0N0: Wider tolerance may affect circuit precision.; T08F1D222MN0B0S0N0: Wider tolerance may affect circuit precision. |
Application & sourcing insights
Questions & answers
Currently, there are no ideal one-to-one replacements. The best path is to search for a 2.2nF, 2kV, ±10% disc capacitor with a B, X7R, or X5R dielectric from other manufacturers. The candidates found are high-risk and require significant engineering review.