RL0201E005M101K 0201 PTC Resettable Fuse | 5V 100mA Overcurrent Protection | RUILON

The RL0201E005M101K is an ultra-miniature 0201 PTC resettable fuse designed to deliver reliable overcurrent and short-circuit protection in compact electronic circuits. With a 5V operating voltage and 100mA hold current, it provides fast fault response and automatic reset functionality once the fault condition is removed. Its extremely small footprint makes it ideal for high-density PCB designs in space-constrained applications. Engineered for low resistance, consistent performance, and long service life, this device is well-suited for consumer electronics, IoT modules, and portable systems requiring efficient circuit protection.

Key Features

• Ultra-small 0201 package for high-density PCB layouts
• Resettable PTC fuse for overcurrent and short-circuit protection
• 5V operating voltage with 100mA hold current
• Fast trip response with automatic reset capability
• Low resistance for reduced power loss
• Stable performance across multiple reset cycles
• High reliability and long operational life
• RoHS compliant and SMT-compatible

Applications

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