ZENITHSUN High-voltage resistors are core components to secure stable and safe operation of circuits widely used in industrial high-voltage systems, precision medical equipment, new energy, military and aerospace industries. Have you ever encountered troubles during component selection, such as insufficient voltage resistance, resistance drift, oversized footprint or shortened service life?
ZENITHSUN has specialized in resistor manufacturing for 22 years. Supported by mature production processes and strict quality control, the company develops a full portfolio of high-performance . Featuring non-inductive design, excellent high-voltage endurance, strong pulse resistance, compact size and high power rating, these products deliver preferred solutions for various high-voltage circuit scenarios. This article introduces three flagship series of ZENITHSUN to help you make the right product selection quickly.
The RI80 series is ZENITHSUN classic and widely adopted rod-type , covering power ratings from 0.5W to 300W with maximum resistance up to 1GΩ. It adopts a 95% alumina ceramic substrate with outstanding thermal conductivity and mechanical strength. Its resistive film is made of precious metal ruthenium paste, guaranteeing stable electrical performance even under high-temperature conditions.
This main series includes multiple sub-models:
- RIZ Series (0.5W–20W): Basic type with maximum limiting voltage of 48kV, ideal for general high-voltage applications.
- RHP Series (8W–300W): High-power rod-type variant with threaded terminals. Its maximum limiting voltage reaches 80kV, suitable for high-voltage power supplies and power equipment.
- RIP Series (4W–16W): Higher power density, maximum limiting voltage up to 7kV.
- RIT Series (0.8W–6W): Tolerance as tight as ±0.1%, designed for precision measurement and medical devices requiring strict resistance accuracy.
Key Specifications of RI80 Series
- Power range: 0.5W–300W
- Resistance range: 10Ω–1GΩ
- Tolerance: ±0.1%–±10%
- Temperature coefficient: ±50PPM ~ ±1000PPM
- Maximum limiting voltage: up to 80kV
- Non-inductive property, high voltage resistance and long service life
The consistent long-term reliability of ZENITHSUN high voltage resistor comes from four core advantages.
First, premium raw materials: 95%–96% high-purity alumina ceramic substrate paired with precious metal ruthenium paste forms dense conductive traces and strong current-carrying capacity.
Second, rigorous process control: The workflow includes electrode printing and sintering, resistive layer printing and sintering, dielectric coating and sintering, followed by resistance trimming, soldering and encapsulation, with quality inspection at every stage.
Third, stringent performance validation. All products undergo short-time overload test, room-temperature durability test, humidity resistance test, high-low temperature cycling test and more. Insulation resistance maintains above 10GΩ.
Fourth, comprehensive certifications. The company holds IATF16949, ISO9001, ISO14001, ISO45001, military quality management system certificates, alongside product approvals including CE, SGS, AEC-Q200 and RoHS.
Whether for power protection, medical instrumentation, new energy systems or aerospace projects, ZENITHSUN high-voltage resistors can offer stable and trusted performance. With 22 years of expertise in resistor engineering, we keep optimizing our high-voltage resistors to tackle the toughest challenges in high-voltage circuit design and safeguard your circuit stability.
