Continuous to 200 °C, wound for 12-220 V, built to IEC 60335 / UL 499 / RoHS. The capability table below states what the part is bounded by.
PTC Heating Modules with Fan are continuous to 200 °C, wound for 12-220 V, watt density 1.5 W/cm² in free air and 8 W/cm² bonded to a heat sink, self-regulating at the Curie point. Power falls as the surface approaches the Curie point, so the element cannot run away — but the settling temperature moves with the airflow and the load, so this is protection rather than accurate control.
Continuous temperature
to 200 °C
Supply voltage
12-220 V
Watt density
1.5 W/cm² free air / 8 W/cm² bonded
Thickness
Element 1.5 mm to 3 mm; assembly to your drawing
Maximum one-piece size
80 x 80 mm to 300 x 200 mm module
These are the process limits for this construction, not the rating of a finished part. The ratings of your heater come from the drawing it is built to, and the watt density it can carry depends on what it is bonded to.
Outline & Specification Builder
Set the outline, the size, the voltage and the power you have in mind. The drawing
redraws to match, and the panel works out the heated area, the watt density and the current — then checks
that watt density against what this construction survives in free air and bonded to a heat sink. Those two
limits are different by several times, and it is the difference that decides whether a heater lasts.
Fills in the form below; attach your outline drawing or DXF there.
Request a Quotation for PTC Heating Modules with Fan
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (IEC 60335 / UL 499 / RoHS)
Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.
Parameter
Specification
Limit / note
Construction
Barium titanate PTC ceramic, electroded on both faces, in an aluminium carrier
Assembly built around the element to suit the load
Curie temperature
+80 u00b0C to +200 u00b0C, selected
Selected at order u2014 it is the surface temperature ceiling and cannot be adjusted afterwards
Self-regulation
Power falls to a fraction of rated as the surface reaches the Curie point
No thermostat is required to prevent runaway; one may still be wanted for control
Element size
80 x 80 mm to 300 x 200 mm module
Standard element footprints; assemblies to your drawing
Supply voltage
12 V, 24 V, 110 V, 220 V
The same element works over a voltage band with different output
Power output
1.5 W/cmu00b2 typical in still air, 8.0 W/cmu00b2 with forced air
Output is set by the airflow, not by a setting u2014 this is what self-regulating means
Inrush current
3 to 8 times running current for 1 to 3 seconds
The supply and any relay or MOSFET must tolerate it
Dielectric strength
1800 V AC, 1 minute, element to case
On the assembled unit with its insulation in place
Insulation resistance
greater than 100 Mu03a9 at 500 V DC
Terminations
Faston 2.8/4.8 mm, crimp, or flying leads
Chosen for the assembly temperature
Life
Over 10,000 hours at rated conditions
Ageing shows as a slow rise in cold resistance, not as sudden failure
Certifications available
UL 499, IEC/EN 60335, RoHS, REACH, CE, IATF 16949
Construction level
Included
PTC core, fan, guard, housing and terminal block
Quoted as an assembly with one part number and one certificate
PTC Heating Modules with Fan are ptc heaters built to your drawing. This page is the process capability behind them — the sizes that can be pressed, the watt density the construction survives, the temperature the insulation tolerates, the voltages it is wound for — followed by how it is attached, how it is protected, and what a quotation needs from you.
What Are PTC Heating Modules with Fan?
PTC Heating Modules with Fan are ptc heaters. They are specified by rating together with the outline drawing, the wattage or the temperature to be held, and what the heater is bonded to — that last one decides the permissible watt density and is the question a quotation cannot skip. The construction is built and tested to IEC 60335 / UL 499 / RoHS.
Construction & Insulation System
The element is barium titanate ceramic whose resistance rises by orders of magnitude above its Curie point. As the surface warms it throttles its own current, so power falls as it approaches the design temperature and it settles there — with no thermostat, no controller and no software involved. The Curie point is selected at order, from 60 °C to 300 °C, and cannot be adjusted afterwards. The ceramic is bonded into an aluminium carrier or fin stack, which is what turns a small hot element into a useful heated surface. Inrush is three to eight times the running current for the first seconds, and the supply and any switching device have to tolerate it.
Watt Density
In free air, with nothing conducting heat away from it, this construction carries 1.5 W/cm². Bonded over its full area to metal that carries the heat off, it carries 8 W/cm². The second figure is not an upgrade of the first — it is a different operating condition, and a heater ordered at 8 W/cm² and then run unbonded fails within minutes. Divide the wattage you need by the area you have before anything else: if the answer is above the free-air figure, either the area grows or the heater gets bonded down.
Typical Applications
Vehicle cabin and battery heating, control cabinet and telecom enclosure anti-condensation, hand dryers and air curtains, washer fluid and coolant warming, mirror and sensor de-icing — duties where a control failure must not be allowed to become a runaway, and where a blocked fan should make the heater quieter rather than hotter.
Specifying the PTC Heating Modules with Fan
Most enquiries start from the supply that is already in the machine rather than from a construction. The voltage pages take one supply at a time — 12 V DC, 24 V DC and 110-120 V AC — and set out what the element is wound for at that voltage, the current the leads and the switch have to carry, and where the wattage has to be split across more than one circuit.
The insulation system, not the element, decides how hot this can run and whether it can be bent at all: PTC Barium Titanate Ceramic and Aluminium Plate / Extrusion. Each page states the continuous ceiling that material sets, the dielectric withstand it gives, and what choosing it costs in flexibility or in thickness.
The duty temperature is the figure that rules constructions out rather than ranking them, so it is worth settling early: 120 °C to 150 °C and 150 °C to 200 °C. Each page states what survives that band continuously, and what the margin between the surface temperature and the insulation limit needs to be.
This construction is built and tested to IEC/EN 60335 and RoHS & REACH — worth checking against the standard your own end product is certified under, because a part built to one scope does not automatically satisfy another. For the equipment and duties this construction is actually specified for, see where ptc heating modules with fan are used.
Inside the plant
Manufactured in our own plant
This heater is laid out, wound or etched, laminated, cut, tested and imaged in-house. The stages below are where its resistance tolerance, its temperature uniformity and its insulation integrity are actually decided.
01
Circuit design & layout
The customer outline comes in as a drawing or a DXF, and the element is laid out inside it: conductor gauge from the voltage, path length from the resistance, pitch from the watt density wanted at each part of the surface. Where the load needs more heat at the edges than in the middle, that is decided here, in the geometry, not later with more power.
Calculated resistance and watt density checked against the construction limits before any tooling is cut.
02
Element preparation
Wire-wound elements are wound on a glass carrier at the calculated pitch; etched-foil circuits are photo-imaged and etched from Inconel or copper foil to a trace width held within 0.05 mm. That tolerance is what makes the resistance repeatable from lot to lot, which is what makes the temperature repeatable.
Trace width and element resistance measured before lamination — a circuit out of tolerance is scrapped here, not after it is sealed inside the part.
03
Lamination & vulcanising
The element and its sensor are laid between the insulation and pressed under heat: silicone is vulcanised, polyimide and PET are laminated with a high temperature adhesive, epoxy plates are potted under vacuum so no voids are left anywhere in the heat path. A void is not a cosmetic defect — it is a place the heat cannot leave from, and it becomes the hot spot that ends the part.
Press temperature, pressure and dwell recorded per lot; potted plates checked for voids.
04
Die cutting & leads
The outline is die cut with radiused corners — a die does not cut an inside corner, and a sharp corner in a film is where a tear starts. Leads are crimped or soldered and strain relieved at the exit, and connectors are fitted to the harness drawing so the assembly line never has to solder.
Outline to ±0.5 mm on film, ±1.5 mm on silicone; lead pull-out tested per lot.
Third-party video, selected automatically for this topic. It is not produced by Heating Film and is not a specification source — use the tables on this page for dimensional data.
Frequently Asked Questions
How many watts per square centimetre do PTC Heating Modules with Fan handle?
Two figures, and they are not interchangeable. In free air, with nothing conducting heat away, 1.5 W/cm². Bonded over its full area to metal that carries the heat off, 8 W/cm². A heater ordered at the second figure and then run in the first condition fails within minutes, so the quotation asks what the heater is bonded to before it asks anything else.
How hot can PTC Heating Modules with Fan run?
Up to 200 °C, and the figure is chosen at order rather than adjusted afterwards: the Curie point of the ceramic IS the surface temperature ceiling. The element throttles its own power as it approaches that point, so it settles there and stays, whatever the load does. Selecting a different ceiling means a different element, not a different setting.
Do PTC Heating Modules with Fan need a thermostat?
Not to prevent a runaway. The ceramic's resistance rises steeply above its Curie point, so the element throttles its own power as the surface approaches that temperature and cannot overheat, whatever the control does or fails to do. What it does not give you is accurate control: the settling temperature moves with the airflow and the load, so where a set point has to be held to a few degrees, a sensor and a controller are still required.
How are PTC Heating Modules with Fan fitted?
They are clamped between machined faces with a thermally conductive interface, where flatness of the mating face matters more than clamping force.
What voltages are PTC Heating Modules with Fan available in?
12 V DC, 24 V DC, 110-120 V AC and 220-240 V AC. The element is wound for the voltage ordered — it is not a switchable range, and running a heater at a voltage other than the one it was wound for changes its power by the square of the ratio.
What is the dielectric strength of PTC Heating Modules with Fan?
1800 V AC, 1 minute, element to case, with insulation resistance above 100 MΩ at 500 V DC measured after the dielectric test. Both are tested on every unit rather than on a sample, because a heater that fails this test in service fails it into whatever it is bonded to.
How do I get a quotation?
Set the outline, size, voltage and power in the builder on this page and send that configuration through, or attach a drawing. The quotation needs six things: the outline, the supply voltage, the power or the temperature you need to hold, what the heater is bonded to, the ambient it works in, and the quantity. With those, a quotation comes back within one business day.
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