
KYOCERA AVX
A 1uF, 50V, X7R ceramic capacitor from KYOCERA AVX in a 0603 package. Further verification is needed.
Walsin's 0603B105K500CT is a general-purpose 1uF, 50V X7R ceramic capacitor in a 0603 package. Several potential pin-compatible and parametric alternatives are available from various manufacturers, requiring careful review of their dielectric properties.
Substituting an X5R for an X7R dielectric lowers the max operating temperature.
The 0603 package is standardized, making mechanical incompatibility unlikely.
Some alternatives have unknown lifecycle status and require verification.
Direct replacement for 0603B105K500CT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with Datasheet verified or Strong match candidates for 0603B105K500CT, then review parametric alternatives for package and electrical fit.
The primary risk is substituting with a capacitor with an X5R dielectric instead of X7R, which reduces the maximum operating temperature from +125°C to +85°C.

KYOCERA AVX
A 1uF, 50V, X7R ceramic capacitor from KYOCERA AVX in a 0603 package. Further verification is needed.
| Feature / factor | 0603B105K500CT | 06035C105KAT2A | HGC0603R7105K500NTHJ | TCC0603X7R105K500CT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 (1608 Metric) | 0603 (1608 Metric) | 0603 (1608 metric) | 0603 (1608 Metric) | 0603 (1608 Metric) / 0603 (1608 metric) — Matches target package.; HGC0603R7105K500NTHJ: Matches target package.; TCC0603X7R105K500CT: Matches target package. |
| Capacitance | 1uF | 1uF | 1uF | 1uF | 1uF — Matches target capacitance.; HGC0603R7105K500NTHJ: Matches target capacitance.; TCC0603X7R105K500CT: Matches target capacitance. |
| Dielectric | X7R | X7R | X7R | X7R | X7R / X5R — Matches target dielectric type.; HGC0603R7105K500NTHJ: Matches target dielectric type.; TCC0603X7R105K500CT: Matches target dielectric type.; 0603X105K500CT: Weaker dielectric, lower max temp. |
| Lifecycle | Active | Unknown | Unknown | - | Unknown — Lifecycle status is not specified.; HGC0603R7105K500NTHJ: Lifecycle status is not specified. |
| Voltage | 50V | - | - | 50V | 50V — Matches target voltage rating. |
| Tolerance | ±10% | - | - | ±10% | ±10% — Matches target tolerance. |
| Temperature | -55°C to +125°C | - | - | - | -55°C to +85°C — Narrower operating temperature range. |
| Manufacturer | Walsin Technology Corporation | - | - | - | Walsin Technology Corporation — Same manufacturer as target. |
Verified drop-in options for 0603B105K500CT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.