Shows a 5 - 50 w power consumption. does that mean they draw max w at start up and then ramp down as they reach max temp? if not please explain

Initially these PTC heating element will draw low current <1 amp for a few seconds and then they will draw nearly 4.5 amps for about 10 seconds and stabilizes to about 2 amps at maximum temperature. To make this more manageable I found ramping the voltage up to 12VDC from 9VDC keeps the current below 3 amps at all times but does increase the time to get to full temperature (<40 seconds) . You can do your own voltage profile to see what fits your application best.

How many amps does does one unit draw?

0.9A-4.5A-2.0A is the current swing.

If I power these a limited current 12v power supply (lets say 500milliamps) will that limit the temperature or will it simply not function?

These should just limit the temperature available with lower amperage. These type of devices should be able to vary the temperature based on the current provided. I have not put these in service yet, but that is what I am expecting while using these as a heater when combined with heat sinks.

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Q: How many amps does does one unit draw?

0.9A-4.5A-2.0A is the current swing.

Q: If I power these a limited current 12v power supply (lets say 500milliamps) will that limit the temperature or will it simply not function?

These should just limit the temperature available with lower amperage. These type of devices should be able to vary the temperature based on the current provided. I have not put these in service yet, but that is what I am expecting while using these as a heater when combined with heat sinks.

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🔥 Stay warm, stay ahead — power your projects with precision!

QUICK HEAT UP TIME - Experience fast warming with efficient heat conduction, perfect for on-demand heating.
DUAL PACK EFFICIENCY - Get twice the heating power with 2 reliable PTC elements in one set.
DURABLE CERAMIC BUILD - High-quality ceramic ensures long service life and excellent heat insulation.
PRECISION TEMPERATURE CONTROL - Maintains a steady 220°C for consistent, safe heating performance.
UNIVERSAL VOLTAGE COMPATIBILITY - Operates seamlessly on both AC and DC 12V power sources for flexible use.

The Bestol 2pcs PTC Heating Element set delivers reliable, consistent heating at 220°C using advanced ceramic thermistor technology. Designed for 12V AC/DC operation, these compact, durable elements heat up quickly and maintain stable temperatures, making them ideal for air or solid heating applications requiring safety and efficiency.

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Brand	Bestol
Model Number	AAA710
Color	White
Product Dimensions	1.2 x 1.5 x 5 cm; 20 g
Voltage	12 Volts (DC)
Special Features	Adjustable Temperature
Item Weight	20 g

Bestol 2pcs PTC Heating Element 5W-50W AC DC 12V 220 Degree consistant Temperature Ceramic Thermostatic

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