GBR-350 “Bleeder” Series High-Voltage Thick Film Resistors
Dual thick film resistive elements (R1 and R2) on alumina ceramic substrate (Al₂O₃ — 96%)
Rated power 2W
R1 resistance range approximately 166MΩ to 221MΩ; tolerance ±5%
R2 resistance range approximately 53MΩ to 76MΩ; tolerance ±3%
Maximum operating voltage 33kV
TCR ±100 ppm/°C
Specifically designed as bleeder resistors for discharging stored electrical charge after supply disconnection
Thick film construction on ceramic substrate for high stability at elevated voltages
What are the GBR-350 “Bleeder” Series High-Voltage Thick Film Resistors?
The GBR-350 is a specialist dual-element thick film bleeder resistor built on a 96% alumina ceramic substrate (Al₂O₃), designed specifically for the controlled discharge of stored electrical charge following the disconnection of high-voltage supply circuits. Unlike single-element high-voltage resistors, the GBR-350 incorporates two independent resistive elements — R1 and R2 — on a single ceramic substrate, each with its own defined resistance value and tolerance, allowing the component to serve both the primary bleeder function and a secondary voltage division or monitoring role within the same compact assembly.
The R1 element spans a resistance range of approximately 166MΩ to 221MΩ with a tolerance of ±5%, while the R2 element ranges from approximately 53MΩ to 76MΩ with a tighter tolerance of ±3%. Both elements are rated to withstand a maximum voltage of 33kV, and the component is rated at 2W continuous power dissipation. The temperature coefficient of resistance for both elements is ±100 ppm/°C, ensuring predictable and stable resistance across the operating temperature range. Typical R1 and R2 value pairs are defined in the product datasheet, covering a range of matched combinations suited to different circuit voltage division ratios.
The ceramic substrate provides the dielectric strength and mechanical rigidity required for reliable operation at voltages up to 33kV, while the thick film construction delivers the higher stability and lower noise characteristics essential in safety-critical bleeder applications where predictable discharge behaviour must be maintained over the service life of the equipment. The dual-element configuration in a single package simplifies PCB layout and reduces component count in designs that require both energy discharge and a proportional voltage reference or feedback signal derived from the same high-voltage node.
GBR-350 “Bleeder” Series High-Voltage Thick Film Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: GBR-350
Resistor type: High Voltage
Description: Thick film
Power Rating: 2W
Resistance (Ω): 50~220M
Tolerance (%): ±3, ±5
TCR (ppm/C): 10
Applications of the GBR-350 “Bleeder” Series High-Voltage Thick Film Resistors
Where RARA high voltage resistors are deployed in the field.
High-voltage power supply safety discharge circuits — primary bleeder resistors for controlled charge dissipation from capacitor banks and filter networks after supply disconnection
Medical imaging and X-ray generator equipment — bleeder and voltage divider resistors for safe discharge of high-voltage storage capacitors in radiographic and fluoroscopic systems
Industrial high-voltage rectifier and converter systems — dual-element bleeders providing simultaneous energy discharge and proportional voltage monitoring at a single high-voltage node
Electrostatic coating and powder application systems — charge discharge resistors ensuring safe voltage decay on electrostatic applicator heads following process interruption
Particle accelerator and physics research power supplies — bleeder networks for safe discharge of high-voltage storage and decoupling capacitors in beam optics and deflection circuits
High-voltage laboratory test equipment — bleeder and voltage divider resistors in kilovolt-range DC power supplies used for component characterisation and dielectric testing
Laser power supply units — capacitor bank discharge resistors providing controlled energy release between laser pulses and during system shutdown in pulsed laser systems
Telecommunications and broadcast transmitter power stages — bleeder resistors for high-voltage anode and collector supply circuits in valve and solid-state RF amplifiers
Electrostatic precipitator and air purification systems — charge decay resistors ensuring safe voltage reduction on collection electrode networks after high-voltage supply removal
Energy storage and capacitor bank systems — equalisation and bleeder resistors maintaining balanced voltage distribution across series-connected capacitors during standby and shutdown
Related Products of the GBR-350 “Bleeder” Series High-Voltage Thick Film Resistors
Model: GBR-351
Resistor type: High Voltage
Description: Thick film bleeder
Power Rating: 2W
Resistance (Ω): 45~256M
Tolerance (%): ±3, ±5
TCR (ppm/C): 100
Model: GBR-390
Resistor type: High Voltage
Description: Divider
Power Rating: 4W
Resistance (Ω): 1~40M
Tolerance (%): 0.1, ±5
TCR (ppm/C): 40
Model: GBR-391
Resistor type: High Voltage
Description: Thick film divider
Power Rating: 13W
Resistance (Ω): 1~40M
Tolerance (%): ±0.1~±5
TCR (ppm/C): 40
Model: GBR-395
Resistor type: High Voltage
Description: Thick film
Power Rating: 1W
Resistance (Ω): 0.1~500M
Tolerance (%): ±10
TCR (ppm/C): 100
Why Choose RARA High Voltage Resistors
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Widest Voltage Range
From 1kV SMD chip types to 90kV precision planar resistors — RARA's high voltage lineup covers more of the voltage spectrum than virtually any single supplier.
02
Extreme Precision
The 400 Series delivers ±0.05% tolerance and 5 ppm/°C TCR — precision that rivals dedicated metrology components, available at high voltage ratings up to 90kV.
03
5 Form Factors
SMD, axial, radial, tubular, and planar configurations give design engineers the right package for board-level, through-hole, or chassis-mounted high voltage circuits.
04
Global Track Record
Trusted by Toshiba, Siemens, Rockwell, and Schneider Electric — deployed in medical, industrial, and telecom high voltage systems across six continents.
