NTC Power Thermistor – Inrush Current Limiter (12 Ohm, ±20%, 2-Pin)

Protect your power supplies and sensitive electronic circuits from damaging start-up surges with this 12-Ohm NTC (Negative Temperature Coefficient) Power Thermistor. Designed specifically to act as an inrush current limiter, this component presents a high initial resistance of 12 Ohms when cold, effectively absorbing and suppressing the initial power spike when a device is turned on. As current flows and the thermistor warms up, its resistance drops rapidly to a negligible level, allowing normal operating current to pass with maximum efficiency and minimal power loss. Packaged in a durable, resin-coated 2-pin radial through-hole design, it is an essential safety component for custom high-power builds, motor drivers, and power supply repair.

Key Features

• Inrush Current Suppression: Effectively dampens dangerous start-up current spikes to protect sensitive downstream components like bridge rectifiers and filter capacitors.

• Negative Temperature Coefficient: The resistance decreases as the component heats up, ensuring high resistance during initial power-on and low resistance during continuous operation.

• High Reliability: Coated in a flame-retardant epoxy or silicone resin, providing excellent thermal resilience and long-term durability on the circuit board.

• Efficient Power Delivery: Once warmed to its operating temperature, the voltage drop across the thermistor is minimal, ensuring your circuit runs efficiently.

• Breadboard & PCB Ready: Features standard 2-pin radial leads for easy through-hole soldering on printed circuit boards or quick testing on a breadboard.

Technical Specifications