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10D-9 NTC Thermistor

SKU: ANFOZZ5XJH
The 10D-9 NTC Thermistor is a Negative Temperature Coefficient (NTC) resistor primarily used for inrush current limiting in electronic circuits. It helps protect sensitive electronic components from high surge currents that occur when power is first applied to a device. With an initial resistance of 10 ohms at 25°C and a compact 9mm disc size, the 10D-9 thermistor is widely...
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Specifications

Specifications:

Type: NTC Thermistor
Model: 10D-9
Resistance at 25°C: 10Ω
Disc Diameter: 9mm
Mounting Type: Through-Hole
Lead Type: Radial Leads
Operating Principle: Negative Temperature Coefficient
Primary Function: Inrush Current Limiting

Additional Resources

10D-9 NTC Thermistor.PDF

FAQ

1. What is a 10D-9 NTC Thermistor?

The 10D-9 is a Negative Temperature Coefficient (NTC) thermistor with a resistance of 10Ω at 25°C. It is commonly used as an inrush current limiter in power supplies, chargers, adapters, and electronic equipment.

2. How does the 10D-9 NTC Thermistor work?

When power is first applied, the thermistor's resistance is high (10Ω), limiting the initial surge current. As current flows, the thermistor heats up, causing its resistance to decrease significantly and allowing normal operating current to pass.

3. What are the typical applications of a 10D-9 NTC Thermistor?

The 10D-9 is widely used in SMPS power supplies, LED drivers, battery chargers, UPS systems, power amplifiers, and other electronic circuits that require protection against high startup currents.

4. What does the "10D-9" marking mean?

The "10" indicates the nominal resistance of 10Ω at 25°C, while "9" refers to the approximate diameter of the thermistor disc, which is 9mm.

5. Can a 10D-9 NTC Thermistor be used for temperature sensing?

Although it is an NTC thermistor, the 10D-9 is primarily designed for inrush current limiting rather than precise temperature measurement. For temperature sensing applications, dedicated NTC temperature-sensing thermistors are generally preferred.

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The 10D-9 NTC Thermistor is a Negative Temperature Coefficient (NTC) resistor primarily used for inrush current limiting in electronic circuits. It helps protect sensitive electronic components from high surge currents that occur when power is first applied to a device. With an initial resistance of 10 ohms at 25°C and a compact 9mm disc size, the 10D-9 thermistor is widely used in power supplies, battery chargers, LED drivers, adapters, and various industrial electronic equipment.

An NTC thermistor exhibits a decrease in resistance as its temperature increases. When the equipment is powered on, the 10D-9 thermistor presents a relatively high resistance of approximately 10Ω, limiting the initial surge current. As current flows through the thermistor, it heats up and its resistance drops significantly, allowing normal operating current to pass with minimal power loss.

This self-regulating characteristic makes the 10D-9 an effective and economical solution for protecting electronic circuits from damaging startup currents.