RL0201E005M300K 0201 PTC Resettable Fuse | 5V 300mA Overcurrent Protection | RUILON

The RL0201E005M300K is a compact 0201 PTC resettable fuse designed for reliable overcurrent protection in ultra-miniature electronic circuits. With a 5V operating voltage and 300mA hold current, it provides fast response to fault conditions while automatically resetting after the fault is removed. Its ultra-small 0201 package makes it ideal for high-density PCB layouts in space-constrained applications. Engineered for low resistance, stable performance, and long operational life, this device is widely used in consumer electronics, IoT modules, and portable devices requiring efficient circuit protection.

Key Features

• Ultra-miniature 0201 package for high-density PCB designs
• Resettable PTC fuse for overcurrent and short-circuit protection
• 5V operating voltage with 300mA hold current
• Fast trip response with automatic reset functionality
• Low resistance for minimal power loss
• Stable performance over multiple fault cycles
• High reliability and long service life
• RoHS compliant and SMT-compatible

Applications

• Overcurrent protection in portable electronics
• Smartphones, tablets, and wearable devices
• Battery pack and charging circuit protection
• USB power lines and low-voltage circuits
• IoT modules and compact embedded systems
• Consumer electronics and smart devices
• PCB-level circuit protection in space-constrained designs