PPTC Thermistor and Self Resetting Fuse Solutions

PPTC Thermistor – High-Performance Self-Resetting Fuse

The PPTC Thermistor is a high-performance self-resetting fuse designed to provide repeated protection against short circuits without requiring replacement. Made from a non-conductive crystalline polymer filled with conductive carbon particles, this resettable fuse automatically limits current flow when a fault occurs. During a short circuit or sudden surge, the device temperature rises, increasing resistance as the carbon particles separate, effectively blocking current and protecting the circuit. Once normal conditions return, the thermistor cools down and restores its low-resistance state, eliminating the need for maintenance.

As trusted resettable fuse suppliers, we provide reliable PPTC devices suitable for automotive, electronics, and industrial applications, ensuring continuous and safe operation in critical circuits.

Key Features

• Repeat Protection: Provides multiple protections without replacement.
• Compact and Efficient: Smaller than traditional fuses, ideal for space-constrained applications.
• Automatic Reset: Returns to low-resistance state after fault conditions clear.
• Versatile Applications: Perfect for automotive, consumer electronics, industrial control, and more.

Available Types

• Surface Mount Device (SMD)：Compact PPTC thermistors acting as self-resetting fuses, perfect for space-limited electronic designs.
• Radial Lead Device：Durable PPTC thermistors providing reliable self-resetting fuse protection for through-hole circuits.
• Axial Lead Device：Axial PPTC thermistors safeguard long wiring runs as dependable self-resetting fuses.