GBR-620 Series Thick Film Heating Elements
Ultra-compact thick film resistive heating element on 96% alumina (Al₂O₃) ceramic substrate
Rated continuous power 1W to 2W — the lowest power range in the GBR heater series
Exceptionally broad supply voltage range 12V to 240V in a single miniature package
Standard catalogue configurations providing 2W at 12V, 24V, 48V, 120V, and 230V DC/AC; other voltage and power combinations available on request
Power tolerance ±5%
Temperature coefficient of resistance (TCR) ±50 ppm/°C
Maximum element temperature 250°C
Solder field termination for direct electrical connection
Suitable as a miniature heating element and as a precision resistor across a wide range of supply voltages
What are the GBR-620 Series Thick Film Heating Elements?
The GBR-620 series are ultra-compact thick film heating elements fabricated on a 96% alumina (Al₂O₃) ceramic substrate, occupying the lowest power tier in the GBR heater range with rated continuous outputs of 1W to 2W. The series is designed for applications where the available space is minimal and the heat required is correspondingly modest, but where the voltage supply may range anywhere from low-voltage DC systems through to full mains-voltage AC. This combination of micro-scale power delivery and exceptional voltage versatility defines the GBR-620's position within the family: it is the element of choice when the thermal load is small, the footprint must be minimised, and the supply voltage is not fixed.
The standard catalogue provides a 2W rating at five different supply voltages — 12V, 24V, 48V, 120V, and 230V — making the GBR-620 one of the most broadly specified elements in the GBR range in terms of voltage coverage relative to its physical size. Each variant is configured with a resistance value calibrated to deliver the rated 2W dissipation at the nominal supply, and all carry a power tolerance of ±5%. The five standard voltages span the most common DC bus levels used in automotive, industrial, and embedded systems as well as both 120V and 230V mains AC supplies, allowing the same element family to be specified into products destined for different international markets without a redesign. Further voltage and power combinations beyond the standard catalogue are available on request.
The temperature coefficient of resistance of ±50 ppm/°C is among the tightest in the GBR range and ensures that resistance remains stable across the operating temperature range, keeping dissipated power close to the rated value even as the element warms during operation. The maximum permissible element temperature is 250°C. Electrical connection is via solder fields on the element surface, providing compact termination for direct wire attachment or PCB soldering. The GBR-620 can also serve as a precision resistor in low-power circuits where a known resistance value across a wide voltage range is required alongside a very small physical footprint, making it a versatile dual-function component for space-constrained electronic assemblies.
GBR-620 Series Thick Film Heating Elements Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: GBR-620
Resistor type: Heater
Description: Thick film elements
Power Rating: 1W~2W
Supply Voltage (V): 12-240
Tolerance (%): ±5
TCR (ppm/C): 50
Applications of the GBR-620 Series Thick Film Heating Elements
Where RARA resistive heaters are deployed in the field.
Miniature sensor and transducer warming — ultra-low-power heating for temperature stabilisation of pressure sensors, humidity sensors, and MEMS devices in space-constrained housings
Optical component and detector temperature control — micro-scale heat input for laser diodes, photodetectors, and optical filter elements requiring gentle and stable thermal conditioning
Anti-condensation heating in compact enclosures — 1W to 2W surface heating for moisture prevention in sealed or miniature electronics housings across any mains or DC voltage
Wearable and portable medical devices — ultra-compact heating elements for body-worn sensors, point-of-care diagnostic cartridges, and miniature therapeutic devices
Microfluidic and lab-on-chip platforms — precise low-power thermal control of micro-reaction zones, flow channels, and biological sample regions in miniaturised analytical systems
IoT and wireless sensor nodes — compact heating on 3.3V to 24V supply rails for temperature-sensitive RF components, crystal oscillators, and battery-management circuits in deployed sensor systems
Automotive sensor modules — miniature 12V and 24V heating elements for dew-point prevention and thermal stabilisation in emission sensors, camera modules, and ADAS optical assemblies
International multi-voltage products — single element family spanning 12V to 230V enables common heating hardware across products targeted at different regional supply standards
Precision resistor applications — stable low-TCR dissipation elements in attenuator networks, reference circuits, and calibration equipment where a very small resistor footprint is required
Consumer and industrial electronics — miniature heating or load elements on 48V, 120V, or 230V supply rails in space-constrained PCB assemblies where larger elements cannot be accommodated
Related Products of the GBR-620 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.
