The PTC Heating Element – 5V 40°C is a compact, thermostatic ceramic heater designed for stable, constant temperature heating without the need for external temperature sensors or controllers. Powered by AC or DC voltage, this element automatically regulates its temperature, making it highly reliable and efficient for long-term, unattended heating applications.
Key Features
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Positive Temperature Coefficient (PTC) technology ensures self-regulating, safe heating
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Works with AC or DC power, polarity-independent
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Constant surface temperature of 40–60°C depending on the environment
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Aluminum tube encapsulation for efficient heat transfer and insulation
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High temperature resistant silicone wires
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Built-in PTC chip allows continuous operation without degradation
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Automatically adjusts power based on heat dissipation conditions
Technical Specifications
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Rated Voltage: DC/AC 5V
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Power: 2–3W (varies with conditions)
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Surface Temperature: 40–60°C (tested at 25°C ambient)
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Dimensions: 25 x 20 x 5 mm (0.98 x 0.79 x 0.20 inches)
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Encapsulation: Aluminum alloy shell with silicone-insulated wires
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Wiring Type: Two-wire connection
Applications
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Instrument preheating and anti-freezing
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Solenoid valve freeze protection
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Circuit board dehumidification
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Inkjet printer nozzle anti-freezing
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DIY incubators, thermos bottle warmers, small heating enclosures
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Suitable for automated, unattended systems requiring low-power, reliable heating
Power Supply Recommendations
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Use a 5V power source matching the rated voltage: switching power supply, transformer, battery pack, or rechargeable battery
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Ensure power supply capacity is greater than the heater’s max power dissipation for stable operation
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For multiple heating elements, connect in parallel to increase total heating power
Usage Precautions
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Do not use in flammable or explosive environments
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Avoid immersion in water
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Do not strike, puncture, or overlap heating elements
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Decrease in supply voltage may slow heating but surface temperature remains constant
Package Includes
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PTC Heating Element – 5V 40°C x1