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Shunt Resistors Professionals High voltage resistors come in many different designs and each of them has been used for specific uses and purposes as well. Most manufacturers are focused on delivering designs of application and customer specific resistors. They usually come in low and medium volume. These resistor types are available for various applications. Each of them retains the technology and application issues’ understanding.

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. These do not get the exact specification being asked but they are actually the closes materials available. Some manufacturers provide application-specific products for high voltage resistor. They are available in low to medium volumes.

A high voltage resistor major application is circuit protection sensitive elements present in a power supply. Other applications include motor control, medical devices, anti static systems, balancing and emitter resistors, military systems (RADAR, SONAR) and divider circuits. 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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The high voltage resistors provide special requirements which are available on high voltage applications. 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 voltage limitation is set through the power dissipation issues like a 10k resistor with one kilovolt across it dissipating 100 watts.


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. Some high voltage resistors utilize the spiral path of dark metal oxide. This is actually available in ceramic. This high voltage resistor is called as tiger stripe resistor. Its capability of peak voltage is usually the body length function and they come in voltage that is ranging about 50 kiloVolt. An important type of resistor is the non-inductive tubular resistor or the bulk ceramic one. Because of a great resistive volume of the material, such kind of resistors should be capable of handling highly pulsed power than the wire wound or metal film counterparts. 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 are usually associated a parallel position along with an instrument or the component. This is done to divert an electrical current. Such kinds of resistors are designed to give alternative path for current in case there is a failure. They can be used to reduce input sensitivity coming from the input lines proceeding directly to the ground.

The current shunt resistor has been generally passive and low resistance electronic devices that have been utilized in measuring DC (direct current) and alternating current (AC) through a voltage drop that the currents had created all through the resistance. The electrical specifications of the shunt resistors involve resistance tolerance, power rating, resistance power coefficient, resistance temperature coefficient, ohms, and current rating.


Ohm is measuring the opposition of the material to the electricity circuit flow while the TCR or temperature coefficient of resistance is referring to resistance change with temperature change. The power coefficient of resistance or PCR is the temperature that arise because of self-heating. In terms of current-sensing shunts, resistance is usually ranging in between 100 µO and 500 mO. The shunt resistor is being used in the current conversion application and it requires high precision.
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The physical specifications for the shunt resistors involve resistor materials and lead type. The shunt resistors may be bolted, surface mounted, through-hole mounted, and chassis mounted. Surface mount technology (or SMT) and through-hole technology (or THT) were both common styles of mounting. Other lead types available are axial leads, radial leads, gull-wing leads, screw terminals, J-leads and tab terminals.

Shunt resistors without leads are also available and they can be wire wound, metal film, metal oxide, carbon film, ceramic, metal alloy, thin film, and thick film. Carbon shunt resistors were composed of resistive, ceramic, solid and high temperature materials that were bonded by metal contacts. Metal allow shunt resistors have 2 or more elements while a wirewound shunt resistor has thin wire winding in a ceramic rod.

Shunt resistors differ in terms of packing methods because some passive electronic elements are packed in the reel tape assemblies along with a carrier tape which embossed cavities for storing individual component. Some were packed in trails (trays) have been composed of fiber and carbon-power materials while they have been molded in a rectangular outline containing matrices of pockets that are uniformly spaced.