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Power and Precision Professionals The high voltage resistors can be found in various designs. Each of these resistors is used for different purposes and applications. Most of their manufacturers are specializing in the design of a customer or application specific high voltage resistor in a low to medium volume. Such kinds of resistors may be integrated in different applications and they retain full understanding of technology and application issues.

The manufacturers need to understand also that the users do not want to risk and compromise the system or component failure through the use of standard resistor products. They do not achieve the accurate specification needed; however, these have been the closest available materials. There are also manufacturers that offer application-specific high voltage resistor products that come in low up to medium volume.

The major application of a high voltage resistor has been the circuit protection sensitive elements in power suppliers, but other applications include motor control, anti static system, medical device, divider circuit, military system, balancing and emitter resistor. The manufacturing capability is defined through several factors or elements which include wattage range, temperature coefficient (TCR), voltage, ohmic ranges and more.
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High voltage resistors got special requirements in terms of applications on high voltage. The common little one-fourth watt carbon film resistors that can be found in many electronics are rated from 250 up to 500 volts which is below the level of kilovolt required. The limitation of the voltage has been set through issues on power dissipation such as the 10k resistor having 1 kV across this dissipates 100W which is excessive to the common ¼ watt.


When it comes to lower current applications, the device physical length has been about 1 cm which indicate from 5 to 10 kilovolt arching around the body of a resistor has been a great problem. Apart from it, some high voltage resistors were using spiral path of the dark ceramic metal oxide. Such kind of a high voltage resistor has been referred to as the “tiger stripe resistor”. The peak voltage capability is more on the function of body length which has a voltage of approximately 50 kilovolt. An important type of resistor is the non-inductive tubular resistor or the bulk ceramic one. Due to extremely resistive volume of the materials, these resistors have been well pulsed power. When compared to metal film or wire wound counterparts, they will be higher. It has been done for ensuring that they will be suitable for rapid energy dumping as well as higher energy pulse works.
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Shunt resistors have been integrated in the parallel form with the component or instrument in order to divert the electrical current. These types of resistors provide alternative current paths in case there have been problems or failure and these are used for complete reduction of input sensitivity from the input lines through the ground.

Current shunt resistors were generally low in resistance and passive electronic devices used to measure AC (alternating current) and DC (direct current) going through the voltage drop in which currents created throughout resistance. The electrical specifications of the shunt resistors involve resistance tolerance, power rating, resistance power coefficient, resistance temperature coefficient, ohms, and current rating.


Ohms measure the material opposition into an electric flow of circuit while temperature coefficient of resistance (or TCR) refers to the change in resistance along with change in temperature. On the other hand, the PCR or power coefficient of resistance refers to the temperature that had risen due to self-heating. The resistance in current-sensing shunts varies. It usually ranges from about 100 µO up to 500 mO. Shunt resistors have been utilized in the applications of current conversion in which high precision has been required.
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The physical specifications present in shunt resistors are resistor materials and even the type of lead. These shunt resistors may get surface mounted and chassis mounted. They can also be bolted and through-hole mounted when desired or depending on the main application. Through-hole technology (THT) and surface mount technology (SMT) have been the other typical and well-known mounting styles. Other lead types available are axial leads, radial leads, gull-wing leads, screw terminals, J-leads and tab terminals.

There is also a shunt resistor that has no leads. These are the wire wound, thick film, metal alloy, thin film, ceramic, metal film, metal oxide and carbon film. The carbon shunt resistor has been comprised of high temperature, resistive, solid and ceramic materials that have been bonded by the metal contacts. The metal alloy shunt resistor contains more than 2 metallic elements and the wire wound shunt resistor has been composed of thin wire winding into the ceramic rod.

Every shunt resistor differs when it comes to packing method since other passive electronic components have been packed in a tape reel assembly including the carrier tape that has embossed cavities to store individual component. Others have been packed in trays (or trails) and they had been made up of carbon-power and fiber materials as they molded in rectangular outlines containing uniformly spaced matrices of pockets. Some of them have been packed in a tray (trail) and were comprised of both fiber and carbon-power materials. At the same time, these are molded in a rectangular form that has numerous pockets which were uniformly spaced.