
XY (Zhenhua Xinyun)
CA45-B-10V-47uF-K may work electrically if the larger Case B footprint is acceptable.
CA45-A-6.3V-47uF-K is a 47uF 6.3V Case A tantalum capacitor. No pin-compatible replacement is verified from these candidates.
ESR, leakage and ripple need checking.
Most candidates are not Case A.
Passive part; no firmware impact.
One candidate is NRND and rejected.
No verified pin-compatible replacement is available in this set.
First seek a 47uF 6.3V ±10% Case A tantalum; otherwise review CA45-B or 1206 MLCC options.
Package mismatch or tantalum-to-MLCC behavior change.

XY (Zhenhua Xinyun)
CA45-B-10V-47uF-K may work electrically if the larger Case B footprint is acceptable.
| Feature / factor | CA45-A-6.3V-47uF-K | CA45-B-10V-47uF-K | CA45-B-16V-47uF-K | HGC1206R5476M250NSPJ | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 3216/1206 Case A | 3528 Case B | - | - | 1206/3216 — nominal same size |
| Pinout | 2 terminals | 2 terminals | - | - | 2 terminals — polarity not checked |
| Voltage | 6.3V | 10V | - | - | 25V — rating margin |
| Tolerance | ±10% | ±10% | - | - | ±10% — same value |
| Temperature | -55..125C | -55..125C | - | - | -55..125C — ES field |
| Application | tantalum bulk cap | - | tantalum bulk cap | - | tantalum bulk cap — same type |
The safest path is another 47uF 6.3V ±10% Case A tantalum. In this set, CA45-B parts need layout review.