Sizing the PTC for your circuit
The 0ZCJ0110FF2E is a 1.1 A hold-current polymeric PTC (positive temperature coefficient) resettable fuse in the 1206 SMD footprint. The hold current (Ih) of 1.1 A is the maximum steady-state current the device carries without tripping at 25°C — size it so your normal operating current stays below this, with margin for ambient temperature derating. When a fault drives current above the trip threshold (It) of 2.2 A, the PTC heats up and its resistance climbs sharply, limiting the fault within 300 ms typical. After the fault clears and power is removed, it resets — no fuse replacement needed.
Automotive-grade authority: AEC-Q200
Rated AEC-Q200, this PTC meets the stress-test qualification for passive components used in automotive electronics — thermal shock, vibration, moisture resistance, and solder-heat reliability per the AEC-Q200 rev D standard. The approval agencies listed include cURus and TUV, covering North American and European safety recognition. Capable is not qualified — the AEC-Q200 mark means the OEM auditor sees a PPAP-ready component.
Package and board-fit for 1206 assembly
The concave termination profile suits automated pick-and-place and reflow — the flat underside wets well, reducing tombstoning risk. Surface-mount only; no through-hole option. Solder pad layout follows the standard 1206 footprint. The 0.039" (1.00 mm) thickness clears most reflow stencil apertures without interference. Tape-and-reel packaging (TR) and cut-tape (CT) options are available for both volume and prototype runs.
Sourcing and lifecycle posture
The 0ZCJ series is current-production; no official successor cross-reference exists. For a given hold-current and package, the parametric fit is the sizing decision — the hold and trip currents, voltage rating, and time-to-trip define the replacement window.