Needs validationlow risk
An identical electrical part from TDK, differing only in supply packaging (tape vs. bulk).
Best Alternatives to CK45-B3DD102KYNNA
Finding a replacement for the TDK CK45-B3DD102KYNNA, a 1nF 2kV ceramic disc capacitor, involves checking voltage, tolerance, and dielectric type. Several options exist, from direct upgrades to cross-vendor alternatives with different characteristics.
AI replacement insight
Electrical riskhigh
High risk if using Y5U/Y5P dielectrics without validating temperature performance.
Package risklow
All candidates are Disc package, but lead spacing/form should be verified for cross-vendor parts.
Sourcing risklow
Multiple vendors offer similar parts, providing sourcing flexibility.
Can it be replaced directly?
Yes, TDK's CK45-B3DD102KYVNA is a direct electrical replacement, supplied on tape instead of bulk.
Best replacement path
Upgrade to the higher-voltage TDK CK45-B3FD102KYNNA for improved design margin.
Main risk
The main risk when using cross-vendor alternatives is the dielectric material mismatch (e.g., Y5U/Y5P vs B), which can significantly alter circuit performance.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | CK45-B3DD102KYNNA | CK45-B3DD102KYVNA | CK45-B3FD102KYNNA | S10B1E102KN0B0S0N0 | Compatibility / risk |
|---|---|---|---|---|---|
| Packaging | Bulk | Taping | - | - | Taping — Affects assembly, not electrical function. |
| Voltage | 2000V | 2000V | 3000V | 3000V | 2000V / 3000V / 4000V — matched; CK45-B3FD102KYNNA: Higher voltage is a safe upgrade.; S10B1E102KN0B0S0N0: Higher voltage rating.; T10B1D102KN0B0S0N0: Higher voltage rating. |
| Package | Disc | Disc | Disc | Disc | Disc — matched; CK45-B3FD102KYNNA: matched; S10B1E102KN0B0S0N0: Verify lead spacing and body dimensions.; T10B1D102KN0B0S0N0: Verify lead spacing and body dimensions. |
| Capacitance | 1nF | 1nF | 1nF | - | 1nF — matched; CK45-B3FD102KYNNA: matched |
| Dielectric | B | B | B | Y5P | B / Y5P — matched; CK45-B3FD102KYNNA: matched; S10B1E102KN0B0S0N0: Y5P is similar but not identical to B.; T10B1D102KN0B0S0N0: Y5P is similar but not identical to B. |
| Tolerance | ±10% | - | ±10% | - | ±10% — matched |
| Temperature | -25°C to 105°C | - | - | -25°C to 85°C | -25°C to 85°C — Narrower operating range than target.; T10B1D102KN0B0S0N0: Narrower operating range than target. |
Application & sourcing insights
Questions & answers
The TDK CK45-B3FD102KYNNA is an excellent upgrade with a higher 3kV voltage rating. For an identical part, CK45-B3DD102KYVNA is the same but supplied on tape.