GBR-253 Series High-Voltage Thick Film Resistors
Thick film resistive element on alumina ceramic substrate (Al₂O₃ — 96%)
Rated power 1.7W
Resistance range 0.1Ω to 500MΩ; tolerance ±10% to ±20%
Maximum continuous operating voltage 29kV
Maximum voltage for 3-second pulse 60kV
TCR ±100 ppm/°C
Operating temperature −20°C to +70°C
Designed for high-voltage applications requiring high stability and resistance
Alternative resistance values available on request
What are the GBR-253 Series High-Voltage Thick Film Resistors?
The GBR-253 is a 1.7W ultra-high-voltage thick film resistor built on a 96% alumina ceramic substrate (Al₂O₃), engineered to operate at continuous voltages up to 29kV and to withstand pulsed voltages of up to 60kV for three-second durations. The 60kV pulse rating is the highest within the GBR high-voltage series, positioning the GBR-253 as the preferred choice for circuits that must survive the most severe transient voltage excursions, such as those encountered in impulse test generators, high-energy discharge networks, and pulsed high-power systems where peak voltages significantly exceed steady-state operating levels.
The resistance range spans 0.1Ω to 500MΩ, with typical standard values extending from 0.1MΩ through to 500MΩ at a tolerance of ±10%, and a wider ±20% tolerance band available for certain values where the combination of very high resistance and extreme voltage rating places greater demands on the manufacturing process. Alternative resistance values beyond the standard range are available on request. The temperature coefficient of resistance is ±100 ppm/°C, and the operating temperature range of −20°C to +70°C covers the majority of industrial and laboratory environments in which such components are deployed.
The GBR-253 shares the thick film ceramic platform common to the broader GBR high-voltage series, inheriting the superior stability, low noise, and dielectric robustness that ceramic substrates provide over polymer-based alternatives. The alumina substrate’s combination of high dielectric strength and thermal stability allows the GBR-253 to absorb repetitive high-energy pulse events without progressive degradation of the resistive element, making it well suited to test and research environments where reliability under repetitive extreme-voltage stress is a fundamental design requirement alongside accurate and stable high-impedance resistance.
GBR-253 Series High-Voltage Thick Film Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
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
Applications of the GBR-253 Series High-Voltage Thick Film Resistors
Where RARA high voltage resistors are deployed in the field.
Impulse and surge test generators — front-of-wave and tail resistors in lightning and switching impulse circuits demanding 60kV pulse capability
Ultra-high-voltage power supply circuits — multi-megohm voltage divider and bleeder networks operating continuously up to 29kV
Pulsed power and energy storage discharge systems — damping and waveshaping resistors in capacitor bank discharge and Marx generator circuits
High-voltage laboratory and metrology equipment — precision kilovolt-range voltage scaling, probe, and reference divider resistors
Medical imaging and radiotherapy accelerators — X-ray generator and linear accelerator high-impedance bias, focusing, and protection resistors
Particle physics and nuclear research instrumentation — high-voltage resistor chains, detector bias networks, and photomultiplier tube supply dividers
Electrostatic and corona discharge equipment — ioniser, precipitator, and electrostatic coating supply resistors operating at multi-kilovolt levels
Laser and plasma excitation power supplies — current-limiting, discharge, and protection resistors for pulsed high-energy systems subject to 60kV transients
High-voltage cable and insulation test equipment — series protection and current-limiting resistors in partial discharge and dielectric withstand test systems
Radar and high-power transmitter systems — high-voltage bias, protection, and pulse-forming network resistors in transmit amplifier and modulator stages
Related Products of the GBR-253 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.
