
TECHFUSE
This TECHFUSE PTC fuse is a strong alternative with matching package, voltage, hold current, and trip current.
Finding a substitute for the BHFUSE BSMD0603-020-24V PTC fuse requires matching its 0603 package, 24V rating, and 200mA hold current. A strong pin-compatible option exists, along with parametric alternatives that need review.
Key ratings must match. A higher hold current reduces protection; a lower one may cause nuisance trips.
The 0603 package is standardized, making physical replacement straightforward.
Direct replacement for BSMD0603-020-24V should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The TECHFUSE SMD0603-020-24V is the most promising direct replacement, sharing key electrical ratings and package.
The primary risk when substituting PTC fuses is a mismatch in the time-current trip curve or resistance, which can affect circuit protection timing and performance.

TECHFUSE
This TECHFUSE PTC fuse is a strong alternative with matching package, voltage, hold current, and trip current.
| Feature / factor | BSMD0603-020-24V | SMD0603-020-24V | BSMD0603-025-24V | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 — Form and fit match.; BSMD0603-025-24V: Form and fit match. | |
| Voltage | 24V | 24V | 24V | 24V — Maximum operating voltage matches.; BSMD0603-025-24V: Maximum operating voltage matches. | |
| Current | 500mA | 500mA | 550mA | 500mA / 550mA — Trip current (Itrip) matches.; BSMD0603-025-24V: Trip current is 10% higher. | |
| Power | 0.5W | 0.5W | - | 0.5W — Power dissipation matches. |
Verified drop-in options for BSMD0603-020-24V 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.