RL0402E018M250K 0402 PTC Resettable Fuse | 18V 2.5A Overcurrent Protection | RUILON

The RL0402E018M250K is a compact 0402 PTC resettable fuse designed for reliable overcurrent and short-circuit protection in modern electronic circuits. With an 18V operating voltage and 2.5A hold current, it delivers fast response to fault conditions and automatically resets once normal operation is restored. Its ultra-compact 0402 footprint makes it ideal for high-density PCB layouts, offering an excellent balance between size efficiency and electrical performance. Engineered for low resistance, stable operation, and long service life, this device is widely used in consumer electronics, IoT modules, and portable systems requiring efficient and reusable circuit protection.

Key Features

• Compact 0402 package for high-density PCB designs
• Resettable PTC fuse for overcurrent and short-circuit protection
• 18V operating voltage with 2.5A hold current
• Fast trip response with automatic reset functionality
• Low resistance for minimal power loss
• Stable performance across multiple reset cycles
• High reliability and long service life
• RoHS compliant and SMT-compatible

Applications

• Overcurrent protection in compact electronic devices
• Smartphones, tablets, and wearable electronics
• Battery packs and charging circuits
• USB and low-voltage power lines
• IoT modules and embedded systems
• Consumer electronics and smart devices
• PCB-level protection in high-density designs