For applications demanding inherent safety and energy efficiency, NBRAM’s PTC heating element offer revolutionary self-limiting performance that eliminates overheating risks without external controls. Ideal for automotive seat heating, HVAC systems, and consumer appliances, these ceramic-based heaters automatically reduce power consumption as they approach their target temperature, providing consistent heat output while resisting burnout. NBRAM engineers custom PTC curves to match your specific thermal requirements, with options for flexible substrates, complex shapes, and integrated temperature feedback. As a trusted OEM partner, we ensure full compliance with automotive (AEC-Q200) and medical safety standards. Simplify your design and enhance reliability—request a free sample kit to test in your application today.
NTRAM’s PTC Heating Element excel where safety and efficiency converge: In electric vehicle battery packs, our low-voltage (12V–48V) modules provide uniform preheating down to -40°C, automatically curtailing power when reaching optimal operating temperatures to prevent energy waste. For consumer goods like hair dryers and yogurt makers, we embed flexible PTC sheets that maintain constant temperatures without PWM controllers, reducing circuit complexity by 50%. Industrial clients use our high-power cassettes in air handlers for precise duct heating, where the self-limiting nature eliminates need for separate overtemperature protection. Additional innovations include transparent PTC films for defogging glass panels and miniature chips for PCR thermal cyclers, where ±0.5°C stability is critical. All designs feature fail-safe operation—even under voltage spikes or blocked airflow scenarios.
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Ceramic Composition |
Barium titanate-based with custom dopants for specific Curie points (60°C to 280°C) |
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Voltage Range |
12V DC to 480V AC, with surge protection up to 2x rated voltage |
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Power Density |
1–5 W/cm² (self-regulating beyond target temperature) |
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Temperature Accuracy |
±3°C at steady state (improves to ±1°C with external controllers) |
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Response Time |
<60 seconds to reach 90% of target temperature |
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Substrate Options |
Aluminum, stainless steel, or polyimide films for flexible designs |
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Protection Ratings |
IP67 available for automotive and outdoor applications |
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Certifications |
UL 1431, AEC-Q200 (automotive), IEC 60335-1 (household appliances) |
NBRAM’s PTC heating element start with precision formulation of barium titanate ceramics, where we adjust dopants (lead, strontium, or zirconium) to engineer exact Curie points between 60°C–280°C. The powder is milled to sub-micron particles, then dry-pressed into discs, strips, or custom geometries with silver electrode layers screen-printed on both surfaces. Sintering occurs in oxygen-controlled furnaces at 1,200°C–1,350°C to achieve the precise semiconducting properties that enable positive temperature coefficient effects. For automotive-grade units, we laminate the ceramic between copper bus bars using conductive epoxy rated for 200°C, then encapsulate with silicone rubber or epoxy coatings for vibration and moisture resistance.
Each batch undergoes rigorous testing: we plot R-T (resistance-temperature) curves to verify sharp switching at the target Curie point and subject elements to 1,000 hours of humidity cycling (85°C/85% RH) to validate stability. A Korean automaker achieved 40% energy savings in seat heaters using our PTC discs versus traditional resistive elements. For medical nebulizers, we laser-trim resistors to achieve ±1% tolerance and use biocompatible coatings. With in-house tooling for rapid prototyping, NBRAM delivers solutions that marry inherent safety with brutal efficiency—from defrosting systems in refrigerators to precision warming in DNA sequencers.
