Series 0ZCJ / 0ZCF – reliable, self-resetting PTC fuses for electronic applications.

Polymeric PTC fuses (Polymeric Positive Temperature Coefficient Resettable Fuses) are protective components used in electronic and electrical circuits. Their purpose is to protect devices against the effects of overloads or short circuits. Unlike traditional fuse links, PTC elements can automatically reset after the overload condition is removed, eliminating the need for replacement. During normal operation, a PTC fuse has a low electrical resistance, allowing free current flow. When an overload or short circuit occurs, its temperature rises rapidly, causing an increase in resistance and effectively limiting current in the circuit. After cooling down, the component automatically returns to its conductive state. The 0ZCJ / 0ZCF series represents modern, high-quality polymeric resettable fuses with a wide current and voltage range. They feature a short reaction time, stable parameters, long service life, and compact dimensions, making them suitable for various applications: from electronic devices and power systems, through telecommunications, to industrial automation and household appliances.

Key Features:

• Self-resetting circuit protection — after overload removal, the component automatically returns to conduction, eliminating the need for fuse replacement.
• Low resistance during operation — low power losses and high energy efficiency.
• Fast response to overload — effective current limitation protects sensitive electronic components.
• Wide operating temperature range — resistance to environmental conditions, typically from −40°C to +85°C.
• High durability — capable of multiple trip and reset cycles without significant performance degradation.
• Compact THT and SMD packages — easy integration into modern PCB designs.
• Maintenance-free operation — no servicing required in typical applications.

Applications:

• Consumer electronics — protection of USB ports, connectors, power circuits, and logic components.
• Telecommunications and networking — securing network devices, modems, routers, PBX systems, and communication equipment.
• Industrial automation — protection of PLC controllers, sensors, I/O modules, and signal circuits.
• Power electronics and power supplies — protection of converters, SMPS units, chargers, and batteries.
• Automotive — securing electronic systems, LED lighting, sensors, and control modules.
• Measurement and medical systems — stable protection for precision measuring and diagnostic equipment.
• LED and lighting applications — protection of drivers and LED power circuits against overload.

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