RL0402E005M100K 0402 PTC Resettable Fuse | 5V 1A Overcurrent Protection | RUILON

The RL0402E005M100K is a compact 0402 PTC resettable fuse designed for reliable overcurrent and short-circuit protection in modern electronic circuits. With a 5V operating voltage and 1A hold current, it delivers fast response to fault conditions and automatically resets once normal operation is restored. Its small 0402 footprint is ideal for high-density PCB layouts, offering a balance between size and handling convenience. Engineered for low resistance, stable electrical performance, and long operational life, this device is suitable for consumer electronics, IoT systems, and portable applications requiring efficient and reusable protection.

Key Features

• Compact 0402 package for space-efficient PCB layouts
• Resettable PTC fuse for overcurrent and short-circuit protection
• 5V operating voltage with 1A hold current
• Fast trip response with automatic reset capability
• 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 power lines and low-voltage systems
• IoT modules and embedded electronics
• Consumer electronics and smart devices
• PCB-level protection in high-density designs