GBR-351 “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 212MΩ to 270MΩ; tolerance ±5%
R2 resistance range approximately 45MΩ to 90MΩ; tolerance ±3%
Maximum operating voltage 33kV
TCR ±100 ppm/°C
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-351 “Bleeder” Series High-Voltage Thick Film Resistors?
The GBR-351 is a specialist dual-element thick film bleeder resistor constructed on a 96% alumina ceramic substrate (Al₂O₃), forming part of the GBR bleeder series alongside the GBR-350. Like its companion, the GBR-351 integrates two independent resistive elements — R1 and R2 — on a single ceramic substrate, each with its own defined resistance value and tolerance, enabling the component to fulfil both a primary charge-discharge function and a secondary voltage division role within a single compact package. The series is designed specifically for applications where stored electrical charge must be safely and reliably dissipated from high-voltage circuits following supply disconnection.
The GBR-351 is distinguished from the GBR-350 by its higher R1 and R2 resistance value ranges, making it suited to circuit configurations that require a different voltage division ratio between the two elements. The R1 element spans approximately 212MΩ to 270MΩ at a tolerance of ±5%, while the R2 element covers approximately 45MΩ to 90MΩ at the tighter tolerance of ±3%. Both elements are rated to 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 stable and predictable resistance behaviour across operational temperature conditions. Typical matched R1 and R2 value pairs are defined in the product datasheet to guide circuit design.
The alumina ceramic substrate provides the dielectric strength required to withstand voltages up to 33kV, while the thick film construction ensures the higher long-term stability and lower noise performance that safety-critical bleeder circuits demand. Deploying both resistive elements on a single substrate not only simplifies PCB layout and reduces component count, but also ensures consistent thermal tracking between R1 and R2, which helps maintain the intended voltage division ratio over the operating temperature range — an important consideration in precision high-voltage monitoring and feedback applications where the ratio between the two elements is used to derive a proportional low-voltage signal from the high-voltage rail.
GBR-351 “Bleeder” Series High-Voltage Thick Film Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
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
Applications of the GBR-351 “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 dissipation of stored charge from capacitor banks and rectifier filter networks after supply disconnection
Medical imaging and X-ray generator systems — bleeder and voltage divider networks for safe discharge of high-voltage storage capacitors with proportional output monitoring in radiographic equipment
Industrial high-voltage rectifier and converter equipment — dual-element bleeders providing simultaneous energy discharge and scaled voltage feedback from a single high-voltage node
Electrostatic coating and surface treatment systems — charge decay resistors ensuring predictable voltage reduction on applicator electrodes following interruption or shutdown of the high-voltage supply
Particle accelerator and physics research power supplies — bleeder networks for safe discharge of storage and decoupling capacitors in beam steering, focusing, and deflection circuits
High-voltage laboratory and standards equipment — bleeder and precision voltage divider resistors in kilovolt-range DC supplies used for component characterisation, calibration, and dielectric testing
Laser excitation power supplies — capacitor bank discharge resistors providing controlled energy release between pulses and safe voltage decay during shutdown in pulsed and CW laser systems
Telecommunications and broadcast transmitter power stages — bleeder resistors for high-voltage anode and collector supply circuits in valve amplifiers and high-power solid-state RF transmitters
Electrostatic precipitator and air purification systems — charge decay resistors ensuring safe and controlled voltage reduction on collection electrode networks after removal of the high-voltage supply
Series capacitor bank and energy storage systems — voltage equalisation and bleeder resistors maintaining balanced charge distribution across series-connected capacitors during standby and controlled shutdown
Related Products of the GBR-351 “Bleeder” Series High-Voltage Thick Film Resistors
Model: GBR-200
Resistor type: High Voltage
Description: Thick film
Power Rating: 1W
Resistance (Ω): 0.1~500k
Tolerance (%): ±10
TCR (ppm/C): 100
Model: GBR-250
Resistor type: High Voltage
Description: Thick film
Power Rating: 2W
Resistance (Ω): 0.1~500M
Tolerance (%): ±10, ±20
TCR (ppm/C): 100
Model: GBR-253
Resistor type: High Voltage
Description: Thick film
Power Rating: 1.7W
Resistance (Ω): 0.1~500M
Tolerance (%): ±10, ±20
TCR (ppm/C): 100
Model: GBR-350
Resistor type: High Voltage
Description: Thick film
Power Rating: 2W
Resistance (Ω): 50~220M
Tolerance (%): ±3, ±5
TCR (ppm/C): 10
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.
