Resistors
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Products that are marked "On Order" in the "Available Quantity" column are usually not in stock. Such products are available for purchase, however, due to their limited customer base, they usually have higher minimum quantities. DACPOL offers products that are not in stock for the following reasons: DACPOL currently has a large number of electronic components in stock and adds new products every day, however, tens of thousands of additional components and their various variants are available from our suppliers. Even though it is unreasonable to have all these products in stock due to the limited sales, we believe that it is in the best interest of our customers to make them available. Our goal is to inform customers about the maximum number of products available and enable them to make decisions based on specifications, prices, availability, required minimums and our technical advice. Please note that selecting the "In Stock" checkbox may limit the display to only products available for delivery straight from the shelf.
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In our offer, we have both adjustable and fixed resistors adapted to various applications. We offer wirewound resistors, film resistors, high voltage resistors, thick film resistors, and those with steel resistive elements.
Types of resistors offered by DACPOL
- Wirewound power resistor – these are resistors made from resistive material in the form of tape or wire wound on an insulating body, which is usually ceramic. We offer resistors in the range from 56mΩ to 200kΩ, and power from 2 W to 1 kW. Additionally, we have wirewound resistors in aluminum housing, which achieve their rated parameters after installation on a suitable heatsink. The range of offered resistances is from 5mΩ to 68kΩ, and power from 10 W to 300 W. Wirewound resistors are used for continuous or slowly changing load devices, and are not suitable for pulse loads. There are also types of wirewound resistors in aluminum housings that are water-cooled and specially wound non-inductive versions. Wirewound resistors are used in electric motor braking, discharging capacitors, in power engineering devices, and in power electronics: power supplies, inverters, and rectifiers.
- Film resistor – in this type of resistor, the resistive element is a thin metal or carbon film applied onto a ceramic body. Due to their low capacitance and inductance values, they can operate at high frequencies. The range of offered resistances is from 0.1Ω to 10MΩ and power from 0.1 W to 20 W.
- Thick film resistor – a type of film resistor with low inductance, whose resistive layer consists of metal oxides and glass and is applied by screen printing onto a ceramic body. The low inductance allows them to work in high-frequency circuits. The range of offered resistances is from 0.5Ω to 1MΩ, and power from 20 W to 800 W. Thick film resistors are used in induction heating, power supplies, RC surge suppressors, and medical equipment.
- High voltage resistor – a metallized, non-inductive resistor with a wide resistance range and high permissible operating voltage (up to 96 kV). The range of resistances we offer is from 0.1Ω to 10GΩ, and power from 1 W to 105 W. They are used in high voltage devices and power engineering systems.
- Resistor with steel resistive elements – constructed from sheets connected in series or parallel. These sheets are low-resistance chrome-aluminum alloys. The number and type of sheets are selected depending on the required resistance and starting power. The resistance range is from 0.07Ω to 246Ω, and power from 500 W to hundreds of kW. They are characterized by high impulse overload capacity, which is why they are most often used as braking resistors for drives with inverters.