MGR Series Metal Glazed High Voltage Resistors
Metal glazed resistive element on axial leaded body
Five body sizes: MGR0623, MGR0932, MGR1145, MGR1550, MGR1760
Standard power ratings 1/4W to 3W at 70°C; high power rating variants up to 5W
Resistance range 100kΩ to 1GΩ (±1%, ±2%); up to 500MΩ at ±5% tolerance
Maximum working voltage up to DC 13,000V (MGR1760 high power rating)
Maximum overload voltage up to 18,000V (MGR1760 high power rating)
Tolerance options ±1%, ±2%, and ±5%
TCR ±100 ppm/°C (100kΩ–1MΩ), ±200 ppm/°C (1MΩ–10MΩ), ±500 ppm/°C (11MΩ–500MΩ)
Operating temperature range −55°C to +225°C (silicone resin); −55°C to +155°C (epoxy resin)
Silicone resin (brown, flameproof) and epoxy resin (light blue) coating options
Insulation resistance 10,000 MΩ minimum at DC 500V
RoHS compliant
What are the MGR Series Metal Glazed High Voltage Resistors?
The MGR series is a range of axial leaded metal glazed resistors engineered for applications requiring high working voltages combined with wide resistance values and reliable long-term stability. Five body sizes are offered — the MGR0623, MGR0932, MGR1145, MGR1550, and MGR1760 — spanning standard power ratings from 1/4W to 3W and high power rating variants from 1/2W to 5W, all rated at 70°C. Maximum working voltages progress from DC 1600V on the smallest standard body up to DC 13,000V on the largest high power rating variant, with corresponding overload voltages reaching 18,000V, covering a voltage range that places the MGR series well beyond the capability of conventional film or wirewound axial resistors.
Resistance values are available from 100kΩ to 1GΩ at ±1% and ±2% tolerance, and from 100kΩ to 500MΩ at ±5% tolerance. The temperature coefficient of resistance depends on the resistance sub-range: ±100 ppm/°C for values from 100kΩ to 1MΩ, ±200 ppm/°C from 1MΩ to 10MΩ, and ±500 ppm/°C from 11MΩ to 500MΩ. The rated continuous working voltage for each part is the lower of √(P×R) and the published maximum working voltage for that model, and overload voltage is similarly constrained to the lower of 2.5×√(P×R) and the rated maximum overload voltage, ensuring that both normal and transient stress conditions remain within the element's design limits.
Two coating materials are available to suit different operating environments. The silicone resin coating, finished in brown, is flameproof and supports a continuous operating temperature up to +225°C, making it appropriate for demanding thermal environments and high-voltage power circuitry. The epoxy resin coating, finished in light blue, is rated to +155°C and suits general industrial and board-level applications. Reliability is confirmed by endurance testing to MIL-STD-202F Method 108B, permitting a maximum drift of ±3.0% after 1000 hours at rated voltage and 70°C, and damp heat with load testing to MIL-STD-202F Method 103B, permitting a maximum drift of ±5.0% after 1000 hours at 40°C and 90–95% relative humidity. Intermittent overload performance is specified to JIS-C-5201-1 at four times RCWV for 10,000 cycles. Both reel and ammo tape packing formats are available across all body sizes.
MGR Series Metal Glazed High Voltage Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: MGR
Resistor type: High Voltage
Description: Metal glazed
Power Rating: 1/4W~3W
Resistance (Ω): 1k~1G
Tolerance (%): ±1, ±2, ±5
TCR (ppm/C): 100, 200
Applications of the MGR Series Metal Glazed High Voltage Resistors
Where RARA high voltage resistors are deployed in the field.
High voltage DC power supplies — voltage division, feedback, and bleeder resistor networks in HVDC, electrostatic, and laser power supplies operating at working voltages to 13,000V.
Medical imaging and diagnostic equipment — voltage sensing and divider chains in X-ray generator, CT scanner, and electron microscope high-voltage power stages.
Industrial electrostatic systems — current limiting, discharge, and voltage measurement resistors in electrostatic precipitators, spray coating equipment, and ion beam systems.
High-voltage test and measurement instrumentation — precision divider and attenuator elements in high-voltage probes, calibration references, and insulation test equipment.
Telecommunications and radar transmitter power supplies — stable high-resistance axial components for voltage monitoring and conditioning in transmitters and antenna systems operating at elevated voltages.
Power conversion and energy storage systems — voltage sensing, pre-charge limiting, and discharge network resistors in solar inverters, wind converters, and battery management systems subject to high bus voltages.
Industrial control and protection circuits — input protection, bias, and overvoltage clamping elements in automation panels and drives where line-voltage transients impose stress beyond the rating of standard resistors.
Scientific and research apparatus — high-impedance, high-voltage resistive elements in particle accelerator instrumentation, mass spectrometer power supplies, and laboratory high-voltage sources.
Related Products of the MGR Series Metal Glazed High Voltage Resistors
Model: HVTK (HVR)
Resistor type: High Voltage
Description: Thick film chip
Power Rating: 1/16W~1W
Resistance (Ω): 10~100M
Tolerance (%): ±1, ±5
TCR (ppm/C): 100~4000
Model: SMG
Resistor type: High Voltage
Description: Metal glazed chip
Power Rating: 1W, 2W, 3W
Resistance (Ω): 47k~33M
Tolerance (%): ±1, ±5
TCR (ppm/C): 200
Model: 400 Series
Resistor type: High Voltage
Description: Precision, Non-Inductive
Low TCR
Power Rating: 3.8W~20W
Supply voltage: 15kV~90kV
Resistance (Ω): 1k~1T
Tolerance (%): ±0.05 to ±10
TCR (ppm/C): 5, 10, 15, 25, 50, 100
Model: HVE
Resistor type: High Voltage
Description: Thick film Tubular
Power Rating: 2.5W~20W
Supply voltage: 4.8kV~45kV
Resistance (Ω): 200~10G
Tolerance (%): ±1, ±5, ±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.
