
BHFUSE
Functional alternative from the same manufacturer with a higher voltage rating (33V) but also a higher hold current (2.0A).
BSMD1812-150-24V is a 1.5A, 24V PTC resettable fuse in an 1812 package. While direct drop-in replacements are scarce, several functional alternatives with a 2.0A hold current and similar or better voltage ratings are available.
Higher hold current changes the protection threshold.
All candidates share the same 1812 package.
No direct, drop-in replacement with an identical 1.5A hold current was found. All viable alternatives require a design review due to a higher 2.0A hold current.
Use a 2.0A hold current part with a higher voltage rating, like BSMD1812-200-33V, after verifying the new current limit is acceptable for the application.
The main risk is reduced overcurrent protection sensitivity due to the higher hold current of all available substitutes.

BHFUSE
Functional alternative from the same manufacturer with a higher voltage rating (33V) but also a higher hold current (2.0A).
| Feature / factor | BSMD1812-150-24V | BSMD1812-200-33V | BSMD1812-200-30V | SMD1812-200C-30V | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1812 | 1812 | - | - | 1812 — Form factor matches. |
| Current | 1.5A | 2.0A | - | - | 2.0A — Higher hold current reduces protection sensitivity. |
| Voltage | 24.0V | 33.0V | - | - | 30.0V — Higher voltage rating provides more safety margin. |
| Power | 1.0W | 1.0W | - | - | 0.8W — Lower power dissipation may affect thermal behavior. |
The best alternatives are functional matches like BSMD1812-200-33V or BSMD1812-200-30V. They share the same package and have higher voltage ratings, but feature a higher 2.0A hold current, which requires circuit protection review.