Explosion-proof
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Product Description
Surge-suppressing NTCs (power-type NTC thermistors) are surge protection devices that leverage their negative temperature coefficient characteristics to achieve “initial current limiting followed by low power consumption.” At their core, they exhibit high resistance in the cold state to suppress surges and low resistance in the hot state to reduce power dissipation.
Key Features and Advantages
• Negative Temperature Coefficient (NTC): As temperature rises, resistance decreases exponentially; as temperature falls, resistance increases.
• Adaptive dynamic current limiting: No control circuit required—automatically achieves “cold-state current limiting and low power consumption in the hot state,” perfectly balancing protection and efficiency.
• Simple circuit and low cost: It requires only one NTC connected in series, with no additional drive or control circuits. It’s compact in size and offers high cost performance.
• Strong suppression capability and fast response: In cold-state high impedance can reduce surge current from hundreds of amps to a safe level, with activation occurring within milliseconds.
• Ultra-low steady-state power consumption and extremely low residual resistance in the hot state—far lower than that of fixed-resistor solutions—resulting in minimal heat generation and high energy efficiency.
• High reliability and long service life: No mechanical contacts, no aging or failure, making it suitable for long-term continuous operation.
• Wide compatibility covering 10W–500W power supplies, suitable for switch-mode power supplies, motor drives, LED power supplies, and more.
Product Introduction
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Series |
Chip diameter ( mm) |
Application scenarios |
Product Features |
Main product parameters |
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China Series NTC thermistor |
4.0~22.0 |
Adapter, charger, Switching power supplies such as LED drivers and server power supplies Inverter, servo drive, UPS Home appliances & Industrial Equipment |
The surge has been brought within the safe range. Prevent the rectifier bridge and modules from being damaged by power-on surges. Soft start, reduces impact, and extends service life. Protect internal components |
Rated zero-resistance power Rated Zero Power ResistanceR N (Ω) |
1~ 100 |
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Maximum steady-state current Max. Steady-State Current Imax (A) |
0.5A~20.0A |
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Maximum allowable capacity Max. Load Capacitance in uF @ 240VAC (uF) |
68~1000 |
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Maximum rated power Maximum Power Rating @ 25℃ Pmax (W) |
1.5–5.0 |
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Structural shape |
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Weld-sealed type |
Sealed type |
Explosion-proof |
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Application Example
Keywords:
Sensitive components
TOPYAR
Category:
CN Series Negative Temperature Coefficient Thermistors
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