GBR-380 Series Thick Film Heating Elements
Thick film resistive heating element on 96% alumina (Al₂O₃) ceramic substrate
Rated continuous power 75W to 85W when mounted on a heatsink
Pulse power capability 300W for 3 seconds on heatsink
Three resistance variants: 705.3Ω (75W), 661.2Ω (80W), and 622.4Ω (85W)
Tolerance ±5%
Supply voltage 230V AC
Temperature coefficient of resistance (TCR) ±50 ppm/°C
Maximum element temperature 280°C
Solder field termination for direct electrical connection
High power density in a compact ceramic package
What are the GBR-380 Series Thick Film Heating Elements?
The GBR-380 series are thick film heating elements fabricated on a 96% alumina (Al₂O₃) ceramic substrate. The thick film process deposits a resistive layer directly onto the ceramic surface, producing an element that combines high power density with excellent thermal stability and mechanical robustness. The ceramic substrate provides low thermal mass, high dielectric strength, and a flat mounting surface that couples efficiently to an external heatsink, enabling continuous rated outputs of 75W, 80W, or 85W in a compact footprint.
Three resistance variants are available within the GBR-380/3 range, each calibrated to deliver its rated power from a 230V AC supply: 705.3Ω for the 75W rating, 661.2Ω for 80W, and 622.4Ω for 85W. All variants carry a tolerance of ±5% and a temperature coefficient of resistance of ±50 ppm/°C, ensuring that resistance drift over the operating temperature range remains small and power output stays close to the rated value. The maximum permissible element temperature is 280°C, which defines the upper thermal limit for both continuous and transient operating conditions.
A notable capability of the GBR-380 series is its pulse power rating of 300W for durations of up to 3 seconds when mounted on a heatsink. This transient overload capacity makes the element well suited to applications that require short-duration high-power bursts alongside lower steady-state dissipation, such as rapid warm-up cycles or inrush-energy absorption. Electrical connection is made through solder fields on the element surface, providing a compact and reliable termination method suitable for direct attachment of wires or PCB-based integration. The combination of high power density, tight TCR, ceramic substrate rigidity, and heatsink compatibility positions the GBR-380 series as a versatile building block for precision heating and high-power resistive applications.
GBR-380 Series Thick Film Heating Elements Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: GBR-380
Resistor type: Heater
Description: Thick film elements
Power Rating: 75W, 80W, 85W 230V
Resistance (Ω): 705.3, 661.2, 622.4
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Applications of the GBR-380 Series Thick Film Heating Elements
Where RARA resistive heaters are deployed in the field.
Precision surface heating systems — uniform and stable heat delivery for industrial process and laboratory equipment
Embedded heater assemblies — integration into custom heater units requiring compact high-power ceramic elements
High-power resistor applications — use as a load or dissipation element where both resistive and thermal functions are required
Rapid warm-up and thermal cycling equipment — pulse power capability for fast temperature ramp applications
Medical and analytical instrumentation — stable low-TCR heating for temperature-sensitive diagnostic and measurement devices
Semiconductor and PCB processing equipment — localised precision heating of substrates and components during fabrication
Fluid and gas heating systems — direct or indirect thermal coupling to pipework and flow-through heating assemblies
Aerospace and defence electronics — thermally robust ceramic heating elements for controlled-environment electronics
Industrial automation and metrology — high-stability resistive heating in calibration, testing, and quality assurance systems
Related Products of the GBR-380 Series Thick Film Heating Elements
Model: GBR-601
Resistor type: Heater
Description: Thick film elements
Power Rating: 10W~150W (heatsink)
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-603
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~30W
Supply Voltage (V): 12-48
Tolerance (%): ±5
TCR (ppm/C): 1500
Model: GBR-605
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~60W (heatsink)
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Model: GBR-612
Resistor type: Heater
Description: Thick film elements
Power Rating: 5W~100W
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Why Choose RARA Resistive Heaters
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Three Technologies
Metal clad space heaters, PTC self-regulating elements, and thick film heaters — RARA covers every industrial heating requirement from a single ISO-certified supplier.
02
Wide Voltage Range
From 3V DC low-voltage PCB warmers to 240V AC panel space heaters — the GBR series and RSHT/RSH range cover virtually any supply voltage in industrial or building systems.
03
PTC Self-Regulation
PTC models (YB, GBR-603) are inherently self-limiting — no thermostat or controller required. As temperature rises, power draw automatically decreases, preventing overheating by design.
04
Global Track Record
Deployed by Siemens, Schneider Electric, Rockwell, and Hanwha in industrial panels and power systems across six continents — backed by ISO 9001 and IATF 16949 certification.
