High Voltage Resistors

Each series below is available in multiple resistance values, voltage ratings, and mounting configurations. Select a series to view full specifications, or request a custom configuration if you don't see an exact match.

Selecting a high voltage resistor comes down to four key specifications. Use this guide to narrow down the right series for your application, or contact our engineering team for help matching a part to your design.

High voltage resistors are rated by their maximum continuous working voltage, typically ranging from 1kV in compact SMD chip formats (HVC, HVF, MC4 Series) up to ultra-high-voltage ratings in our Ultra Mox and Super Mox series. Match your resistor's voltage rating to your circuit's peak operating voltage, with margin for transient spikes.

Ohmite's high voltage resistors are available from low-ohm values up to 10T ohms (Ultra Mox Series), with tolerances as tight as required for precision voltage divider and electrometer circuits.

• Surface Mount (SMD/Chip): HVC, HVF, MacroChip, MC1RD, and MC4 Series — ideal for board-level designs with space constraints

• Axial Lead / Through-Hole: Mini-Mox, Maxi-Mox, Power-Mox, and Slim-Mox Series

• Heat-Sinkable / High-Energy: TFS, TFSS, and TRH Series — built to absorb large energy pulses in compact form factors

Confirm your chosen series is rated for your environment's temperature, energy absorption, and stability requirements — see applications below.

• Power Supplies: Voltage dividers, bleeder resistors, and discharge circuits in high voltage power supply design.

• Avionics & Aerospace: High-reliability resistors for flight control, radar, and power distribution systems.

• Medical Instruments: Precision resistors for diagnostic imaging, electrometers, and high voltage measurement equipment. 

• Industrial Controls: Motor control, industrial automation, and process equipment requiring stable high voltage performance. 

• Military & Defense: Rugged high voltage resistors meeting demanding environmental and reliability specifications. 

• Power & Energy: High voltage resistor dividers and current-limiting devices for energy generation and distribution systems.

Don't see your application listed? Our engineers regularly develop custom high voltage resistor solutions for new and unique design challenges.

A high voltage resistor is specifically constructed and rated to safely withstand higher working voltages without arcing, flashover, or dielectric breakdown. This typically requires different materials, longer creepage/clearance distances, and specialized coatings compared to standard low-voltage resistors. If your application involves voltages above approximately 1kV, you should select a dedicated high voltage series rather than a standard resistor.

High voltage resistors are rated primarily for their maximum working voltage, while high power resistors are rated for their ability to dissipate heat (wattage) under continuous or pulsed load. Many applications require both high voltage and high power handling — our engineering team can help you identify a series that meets both requirements.

Yes. Ohmite's HVC, HVF, MacroChip, MC1RD, and MC4 Series all bring high voltage capability to surface mount and chip resistor formats, making them suitable for space-constrained board designs that still require high voltage ratings.

Yes. Every series on this page can be customized for resistance value, tolerance, voltage rating, mounting style, and packaging. Request a custom configuration and our engineering team will work directly with you on a design.