Active production, 30 mA hold — a fit check for 36V rails
The 0603L003/36YR-A: Its 30 mA hold current (Ih) at 36 V max means it passes normal circuit current up to that point without tripping; once the fault current reaches 90 mA (It), the PTC heats and transitions to a high-resistance state in typically 1 second, protecting downstream components.
0603 footprint, concave termination — board-fit note
Initial series resistance is 6 Ohms minimum, rising to 50 Ohms maximum after a trip event — the post-trip resistance adds a voltage drop that keeps the PTC latched until power is cycled, so the circuit sees a clean open-circuit condition during fault.
Approvals and temperature range
Carries cURus and TUV agency approvals — accepted in North American and European equipment without additional component-level review for the safety agency file.