NTC 10D20 Thermistor 10Ω 6A THT 20mm Diameter

The NTC 10D20 is a negative temperature coefficient thermistor, meaning its resistance decreases as temperature increases. With a nominal resistance of 10Ω and a maximum current of 6A, this component is especially used in circuits where the initial current must be limited when the equipment is switched on.

This type of NTC thermistor is widely used as an inrush current limiter, helping reduce current peaks in power supplies, chargers, electronic equipment, power modules, circuits with input capacitors and other systems exposed to high startup current.

When the circuit is powered on, the thermistor initially presents a higher resistance, helping limit the current surge. During operation, it naturally heats up due to current flow and its resistance drops, allowing normal current flow with lower loss.

With THT/radial mounting, the NTC 10D20 is easy to install on printed circuit boards, prototyping boards, power supplies, repair jobs and electronic projects. As it supports a higher current than the 10D9 model, it is suitable for applications requiring greater current capacity.

Main features

NTC thermistor
Type: thermal resistor / negative temperature coefficient
Reference: NTC 10D20
Nominal resistance: 10Ω
Maximum current: 6A
Mounting: THT / radial
Element diameter: 20mm
Coefficient indicated by supplier: 113
Dissipation factor indicated by supplier: 24
Polarity: non-polarized
Component type: passive
Main application: inrush current limiting
Suitable for power supplies and protection circuits
Suitable for repair, maintenance and electronic projects

Recommended applications

Inrush current limiting
Startup current surge protection
Power supplies
Switch mode power supplies / SMPS
Chargers and power modules
Soft-start circuits
Consumer electronic equipment
Amplifiers and audio equipment
Equipment with input capacitors
Power supply and PCB repair
Electronic projects requiring a 10Ω / 6A NTC thermistor
Power applications where startup current limiting is required

Important note

Before use, always confirm the nominal resistance, maximum current, diameter, lead spacing, tolerance, beta value, operating temperature and compatibility with the original circuit. The NTC 10D20 must be selected according to the real circuit current, applied voltage, startup surge energy, ambient temperature and available board space.

This component should not be replaced based only on its physical shape. In power supplies and mains-powered circuits, choosing the wrong thermistor may cause excessive heating, insufficient protection or equipment failure. For temperature sensor applications, confirm that the circuit is designed for a 10Ω NTC, as many 3D printer sensors and controllers use much higher values, such as 10kΩ or 100kΩ.