Active PTC resettable fuse for automotive and industrial PCB protection
The Bel Fuse 0ZCJ0010FF2E is a polymeric PTC resettable fuse in the 0ZCJ series, holding 100 mA continuously and tripping at 250 mA within 1 second at rated conditions. With a maximum voltage of 60 V and a compact 1206 (3216 metric) surface-mount package, it protects downstream circuitry from overcurrent faults without requiring a fuse replacement after the event. The AEC-Q200 qualification confirms it meets the stress and reliability requirements for automotive-grade passive components.
Hold and trip current: sizing the protection for your load
The 100 mA hold current (Ih) is the maximum steady-state current the PTC can carry without tripping at 25°C ambient. For a load drawing 80 mA nominal, this part provides margin against nuisance trips from inrush or ambient temperature rise. The 250 mA trip current (It) is the threshold at which the device begins to heat and increase resistance, clearing the fault within 1 second at 25°C. After tripping, the post-trip resistance (R1) rises to a maximum of 15 ohms, limiting fault current to a safe level.
Package and board-fit: 1206 SMD with concave termination
The concave termination style provides a visible solder fillet for inspection, which is preferred for automotive and high-reliability builds. Surface-mount mounting means the part reflows with the board — no through-hole hand-soldering step. The tape-and-reel packaging option supports volume production, while cut-tape is available for prototype or low-volume builds.
Approvals and compliance for global BOM acceptance
The 0ZCJ0010FF2E carries AEC-Q200, cURus, and TUV approvals, covering automotive reliability, North American safety, and European component-level certification. These marks simplify BOM acceptance across regional regulatory reviews without separate qualification testing. Bel Fuse lists the product status as Active, meaning the manufacturer continues to produce and support the part for new designs.