NTC Thermistor (Negative Temperature Coefficient) – Inrush Current Limiter

NTC Thermistor (Negative Temperature Coefficient) – Inrush Current Limiter

The NTC Thermistor (Negative Temperature Coefficient) is a temperature-sensitive resistor whose resistance decreases as temperature increases. It is commonly used as an Inrush Current Limiter (ICL) to reduce the high surge current that occurs when electrical equipment is first powered on, helping protect power supplies, transformers, motors, and electronic circuits.

Available in multiple resistance values and disc sizes to meet different current-handling requirements.

Available Models

• NTC 5D-5
• NTC 5D-7
• NTC 5D-9
• NTC 5D-11
• NTC 5D-15
• NTC 8D-9
• NTC 8D-11
• NTC 8D-20
• NTC 10D-7
• NTC 10D-9
• NTC 10D-11
• NTC 10D-15
• NTC 10D-20
• NTC 20D-20
• NTC 33D-7

Features

• Negative Temperature Coefficient (NTC) thermistor
• Limits inrush current during power-on
• Resistance decreases as temperature increases
• Improves circuit reliability and extends component life
• Fast thermal response
• Radial lead, through-hole package
• Suitable for AC and DC power applications

Applications

• Switching power supplies (SMPS)
• Battery chargers
• Power adapters
• Transformers
• Motor controllers
• LED power supplies
• Industrial equipment
• Home appliances

Model Number Guide:

• The number before D indicates the cold resistance at 25°C (Ω).
• The number after D indicates the approximate disc diameter (mm), which is related to current-handling capability.