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Best Alternatives to SMD0603-005

Package: 0603TECHFUSECircuit ProtectionOperating Voltage (Max): 15VHold Current: 50mATrip Current: 200mACurrent Rating (Max): 40APower Dissipation (Typ): 0.5W

Find datasheet-verified substitutes for the TECHFUSE SMD0603-005 PTC resettable fuse. Explore pin-compatible alternatives and parametric options for your 15V, 50mA overcurrent protection application.

AI replacement insight

Electrical riskhigh

Using a part with a higher hold current (e.g., 100mA vs 50mA) will not protect the circuit as designed.

Package risklow

The 0603 package is standardized, so physical compatibility is very likely across vendors.

Can it be replaced directly?

Direct replacement for SMD0603-005 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

SMD0603P005TF from RUILON is the strongest candidate, matching all key electrical and physical parameters.

Main risk

The main risk is selecting an alternative with a mismatched hold current, which could compromise circuit protection.

Recommended alternatives

4
SMD0603P005TF package
SMD0603P005TF

RUILON

Needs validationlow risk

A strong pin-compatible alternative from RUILON with matching package, voltage, and hold/trip current ratings.

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Alternative comparison matrix

Feature / factorSMD0603-005SMD0603P005TFSMD0603-010SMD0603-010C-33VCompatibility / risk
Package06030603060306030603 — Identical package ensures form and fit compatibility.; SMD0603-010: Package matches, ensuring form-fit compatibility.; SMD0603-010C-33V: Package matches, ensuring form-fit compatibility.; SMD0603P010TF: Package matches, ensuring form-fit compatibility.
Voltage15.0V15.0V15.0V33.0V15.0V / 33.0V — Maximum operating voltage matches the target.; SMD0603-010: Maximum operating voltage is identical.; SMD0603-010C-33V: Voltage rating is higher, which is generally safe.; SMD0603P010TF: Maximum operating voltage is identical.
Current200mA200mA100mA100mA200mA / 100mA / 300mA — Trip current (It) matches the target's specification.; SMD0603-010: Hold current is 2x the target's 50mA. This is a different part from the same manufacturer series.; SMD0603-010C-33V: Hold current is 2x the target's 50mA, which may not protect the circuit as intended.; SMD0603P010TF: Trip current is higher than the target's 200mA.

Application & sourcing insights

Questions & answers

Verified drop-in options for SMD0603-005 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.