Carbon Film Resistors * CARBON FILM RESISTOR

The carbon film resistor is one of film Resistors. Carbon film resistors are prepared by coating a suspension of carbon ink, graphite and fillers on an insulating substrate with an organic binder and polymerizing them by heating. Gaseous hydrocarbons decompose at high temperature and vacuum, and carbon is deposited on porcelain rods or tubes to form a crystalline carbon film. Therefore, carbon film resistance is also called "thermal decomposition carbon film resistance". Different resistance values can be obtained by changing the thickness of the carbon film and changing the length of the carbon film by engraving. Carbon film resistors have low cost, poor electrical performance and stability, and are generally not suitable for general-purpose resistors. However, because it is easy to make a high resistance film, resistance and power range is wide, so it is mainly used as a high-resistance high-voltage resistor, and its use is the same as a high-voltage resistor. The lead link mode of carbon film resistor includes axial lead, collar lead and non-connecting lead. The main function of carbon film resistor is to hinder the flow of current, used in current limiting, shunt, voltage reduction, voltage division, load and capacitor with cooperative filter and resistance matching.

Metal Film Resistors * METAL FILM RESISTOR

The metal film resistor is one of film Resistors. It uses high-temperature vacuum coating technology to closely attach nickel-chromium or similar alloy materials to the surface of porcelain rods to form a film, cut and debug the resistance value to achieve the final required precision resistance value, then add appropriate joint cutting, and coat its surface with epoxy resin for sealing and protection. Its heat resistance, noise potential, temperature coefficient, voltage coefficient and other electrical properties than carbon film resistors, can be used in most home appliances, communications, instrumentation. The manufacturing process of the metal film resistor is relatively flexible, not only can adjust its material composition and film thickness, but also can adjust the resistance value by engraving, so it can be made into a resistor with good performance and a wide range of resistance values. Compared with carbon film resistors, this resistor is small in size, low in noise, and good in stability, but the cost is higher. It is often used as a precision and high-stability resistor and is widely used in various radio electronic devices.

Metal Oxide Film Resistors * METAL OXIDE FILM RESISTOR

Metal oxide film resistor is a special metal or alloy resistance material, with vacuum coating or cathode sputtering process, the specific metal or alloy (such as nickel chromium alloy, tin oxide or tantalum nitride) deposited on the insulating substrate (such as molded phenolic plastic) on the surface of the thin film resistor. Characteristics of oxide film resistance 1. Good stability of heat resistance, humidity resistance and overload 2, the film is hard and not easy to damage, non-combustible structure coating 3. Select high-quality porcelain rods to make small products to replace large-size high-power general resistors. Disadvantages of oxide film resistance The oxide film resistance is prone to electrolysis under DC to reduce the oxide, and the performance is not very stable. Low withstand voltage.

High Power Resistor * High POWER RESISTOR

High-power resistors are an important electronic component that can withstand high power values without being damaged. Such resistors are usually bulky and designed to handle large currents and voltages. In electronic devices, high-power resistors play a key role in stabilizing circuits and reducing power fluctuations. Its length can be customized according to requirements, but generally a longer resistor can better dissipate heat and improve its ability to withstand power. In addition, the material and manufacturing process of high-power resistors also play a vital role in their performance. In general, high-power resistors are indispensable in high-performance electronic devices and provide important support for the stable operation of circuits.

Wound Resistors * WIRE WOUND RESISTOR

A wire-wound resistor is a type of fixed resistor. The wire wound resistor is formed by winding the resistance wire on the insulating skeleton. Resistance wire is generally made of nickel chromium, manganese copper and other alloys with a certain resistivity. The insulating skeleton is made of ceramic, plastic, metal coated with an insulating layer and other materials, such as tubular, flat and other shapes. Resistance wire can be wound on the skeleton according to the needs of a layer, can also be wound multi-layer, or the use of non-sense winding method. Wound resistors are mainly used in precision instruments, telecommunications instruments, electronic equipment and other AC and DC circuits for voltage division, voltage reduction, shunt and load resistance. The characteristics of wire winding resistance: (1) The resistance wire is made of constantan, manganese copper, nickel chromium and other alloy materials, which has good stability and overload capacity. (2) The crimping method is adopted between the resistance wire and the lead wire of the welding foot. If the load is short-circuited during application, it can be quickly fused at the crimping to protect the circuit. (3) Due to the use of industrial high-frequency electronic ceramic shell and mineral material encapsulation, it has excellent insulation performance, the resistance can reach more than 100MΩ, and the heat dissipation is good, and the power is high. (4) The resistance wire is tightly encapsulated in the ceramic resistor body, which has excellent flame retardant and explosion-proof characteristics.

Cement resistors * CEMENT RESISTOR

Cement resistor is a resistor potted with refractory clay, that is, the resistor wire is wound on a non-alkaline heat-resistant porcelain piece, and the outside is protected and fixed with heat-resistant, moisture-resistant and corrosion-resistant materials. The wire-wound resistor body is placed in a square porcelain frame and filled and sealed with special non-combustible heat-resistant cement. Cement resistors have ordinary cement resistors and cement wire wound resistors. Cement resistor is a resistor with large power and can allow large current to pass. Its function is the same as that of general resistance, but it can be used in occasions with large current, such as connecting in series with the motor to limit the starting current of the motor, and the resistance value is generally not large. Cement resistors have the characteristics of large size, shock resistance, moisture resistance, heat resistance, good heat dissipation, and low price. They are widely used in power adapters, audio equipment, audio frequency dividers, instruments, meters, televisions, automobiles and other equipment. characteristics of cement resistance: 1, shock resistance, moisture resistance, heat resistance and good heat dissipation, low price and other characteristics. 2. Fully insulated, suitable for printed circuit boards. 3. The porcelain rod is wound and then the joint is welded to produce accurate resistance value and prolong service life. 4. The high resistance value is made of metal oxide film (MO) instead of winding. 5, excellent heat resistance, resistance temperature coefficient is small, a linear change. 6. Resistant to short-term overload, low noise, and no change in resistance value over the years. 7, good explosion-proof performance, play a protective role.

Gold Aluminum Case Resistors * ALUMINUM HOUSED WIRE WOUND RESISTOR

Aluminum shell resistance, the shell is made of aluminum alloy (gold aluminum shell), the surface has heat dissipation grooves, small volume, high power, high temperature resistance, strong overload capacity, weather resistance, high precision, standard low induction resistance, high stability, strong structure, its flexibility and multiple combination selection, conducive to mechanical protection, convenient installation and use. Their advantages are resistance accuracy, low noise, good heat dissipation, and possible power consumption. They are mainly used in the power level part of the amplifier. The disadvantage is that the resistance is not large and the cost is high, but it is not suitable for using inductors in high-frequency circuits.

Metal Glass Glaze Resistance*METAL GLASS GLAZE RESISTANCE

Glass glaze resistor is a product made of precious metal silver palladium, ruthenium, rhodium and other metal oxides (palladium oxide, ruthenium oxide, etc.) and glass glaze binder mixed into slurry, coated on the insulating skeleton, and sintered at high temperature. Glass glaze resistors have the following characteristics: ① moisture resistance, temperature resistance, good stability. The resistance range is wide, and the resistance range is 4.7 Ω-200MΩ. ③ The rated power is generally 1/8W, 1/4W, 1/2W, lW, 2W, and the high-power type has 500W. ④ low noise, good high frequency characteristics. ⑤ Small size and light weight. the shortcomings of glass glaze resistance: ① The cost is high. The welding technology requirements are high.