
RUILON
Strong pin-compatible alternative from RUILON with identical package, voltage, hold current, and trip current.
TECHFUSE SMD0603-010 is a popular 0603 PTC resettable fuse with a 100mA hold current and 15V rating. This page provides verified alternatives and analyzes replacement risks for your design.
Hold and trip currents must be closely matched to ensure proper circuit protection.
The 0603 package is highly standardized, minimizing physical compatibility issues.
This is a common PTC fuse value with many alternative manufacturers available.
Direct replacement for SMD0603-010 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Use a candidate with an identical 100mA hold current and 0603 package, such as SMD0603-010C-33V or SMD0603P010TF.
The primary risk is selecting a part with a higher hold current, which would compromise the overcurrent protection of your circuit.

RUILON
Strong pin-compatible alternative from RUILON with identical package, voltage, hold current, and trip current.
| Feature / factor | SMD0603-010 | SMD0603P010TF | SMD0603-010C-33V | FSMD010-0603-R | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — Form factor matches.; SMD0603-010C-33V: Form factor matches.; FSMD010-0603-R: Form factor matches.; SMD0603-020-24V: Form factor matches. |
| Voltage | 15V | 15V | 33V | 15V | 15V / 33V / 24V — Maximum voltage rating is identical.; SMD0603-010C-33V: Higher voltage rating provides an upgrade.; FSMD010-0603-R: Maximum voltage rating is identical.; SMD0603-020-24V: Higher voltage rating is a safe upgrade. |
| Current | 300mA | 300mA | 300mA | 250mA | 300mA / 250mA / 500mA — Trip current (It) matches.; SMD0603-010C-33V: Trip current (It) matches.; FSMD010-0603-R: Trip current is slightly lower, which is generally safe.; SMD0603-020-24V: Trip current is significantly higher. |
Verified drop-in options for SMD0603-010 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.