Additional Feature FLAME PROOF PRECISION. Mouser offers inventory, pricing, & datasheets for fusible resistor. fusible resistor are available at Mouser Electronics. Prices for 1/4-W parts are typically under $0.10 each in medium to large volumes. This is because the wirewound resistance element at low values is considerably larger than the wire used for high values. Metal-film resistors. (line) input applications. But it must be fuse without flames when 100v short circuit overloads. Each parameter will help define which technology will function correctly in the circuit. A Fusible Resistor is a wire-wound resistor that is designed to burn open easily when the power rating of the resistor is exceeded. When the power isn't exceeded, it serves as a resistor limiting current. How much of an overload is required to open the resistor depends on several factors, such as the type and mass of the resistance material, the core composition, lead material and diameter, ambient temperature, and airflow across the resistor. Fusing within 1 s can require an overload at 60 times rated power or more, and the minimum power required to fuse (15 to 20 times rated power) can take 30 s or longer to cause fusing. Mouser offers inventory, pricing, & datasheets for fusible Resistors. 0000112435 00000 n Since two functions performed by one resistor, the cost therefore saved. 0000003217 00000 n 0000004101 00000 n fusible resistor are available at Mouser Electronics. Terminal strength No evidence of mechanical damage. To select the proper fusing device for the application, the designer must determine parameters such as resistance value, tolerance, size, steady-state current, overload current (with any possible pulsing), and blow requirements. Typical blow times with five times rated power range from 50 ms to 10 s, and with 10 times rated power from 10 to 200 ms. Generally, this type of product costs several dollars each or more, depending on the degree of manufacturing difficulty and testing required. Showing 101 - 147. 0000007830 00000 n Axial leads operate as heat sinks, drawing heat from the resistor body and shunting it into the pc board. 0000002864 00000 n Investigations by the telecommunications industry have revealed that while these products usually open safely when overloaded immediately at 600 Vac, they could fail catastrophically if the voltage is slowly ramped. Special wirewound fusing resistors. Dimensions are in millimetres unless otherwise specified. Although having been manufactured for many years, fusing resistors have shown limited growth until the last 10 to 15 years. 0000001826 00000 n Once the steady-state current is exceeded, the resistor may fuse to open the circuit. The time to fuse is also relatively long compared to most wirewound products. Although metal-film fusing resistors are much less precise than most wirewounds, they are generally less expensive. 0000001008 00000 n www.vitrohm.com. Some of the methods used to provide fusing action are similar. Fusible Through-Hole Resistors Designed to protect circuit from abrupt transients and meet safety requirements Yageo offers complete range of fusible resistors which operate both as a normal resistor and as a fuse. Film fusing resistors are generally less precise than wirewounds in defining what overload is required to fuse the resistor within a specific time span. China Fusible resistor catalog of Wire-Wound Fusible Resistor 0.5W 250V 35Ω, Thermal Fuse Built-in Resistor provided by China manufacturer - Shenzhen Topmay Electronic Co., Ltd., page1. Fusible resistors. VITROHM THROUGH HOLE SMD WIREWOUND FILM CURRENT SENSOR WIREWOUND FILM CURRENT SENSOR • Coated ... WIREWOUND RESISTORS THROUGH HOLE RESISTORS FUSIBLE COATED MOULDED www.vitrohm.com 5. A fusible resistor can pass the pulse of a high voltage of 500v without failure. •Resistor-capacitor (RC) networks- integrated circuits (ICs) that contain RC arrays in a single chip. Wirewound type fusible resistors are mostly used. These products will undoubtedly replace the 1/4- and 1/2-W axial films more than the higher wattage and precision wirewounds. Wirewound resistors. Its benefits are the ability to hit a tight blow window by using different cores, wire, and other proprietary techniques. Future developments The next development in the evolution of the fusing resistor will be in the surface-mount arena. This fusible resistor used in the circuit operates high voltage with small or lower current such as 100ma, 250ma. Fusible resistor series is a new type of component, it is a compound function resistor with the dual function of resistor and fuse. 1773218 Issued: 10-08 Dimensions are shown for reference purposes only. # UL recognised. Core composition is critical, as different materials dissipate the heat created by the overloaded element with varying efficiency. 0000002306 00000 n In this way, a fusible resistor serves dual functions. FWxxA Series Fusible Power Resistors Fusing Performance Temperature Rise Power Derating Curve Pulse Performance 1.2/50 μs Peak Voltage Limit (10 pulses at 10 sec. Hi, I just fixed a 19" monitor rescued from the kerb (LICOM N9054LP), and I Of these characteristics, the type of material used as the resistance element controls the most important parameter: the melting temperature of the material. 0000007242 00000 n Fusing means that resistive value of the resistor increases at least 100 times; see Figs. 1). 0000106939 00000 n Fusible resistors have the benefit of combining overcurrent protection and inrush current protection in one component. 0000001113 00000 n Other factors, to varying degrees, affect the amount of time it takes for the material to reach that temperature. One characteristic that is different is the time required to fuse relative to resistance value–in wirewound parts this characteristic is reversed compared to that of film resistors. I contacted a manufacturer of fusible resistors in China called Token Electronics (www.tokenchina.com). As a result, most of the electronic equipment manufactured today has been designed with the ability to deenergize before a fire or other calamity can occur. Fusing Time 30. Selecting fusing resistors for equipment safety, Choosing the right part is made more difficult by the many different technologies and configurations available. fusible resistor Metal Film Resistors - Through Hole are available at Mouser Electronics. Simply defined, a connected car has internet access and can share data with devices inside and outside the vehicle. FUSING CHARACTERISTIC The resistors will fuse without the risk of fire and within an indicated range of overload. tycoelectronics.com passives.tycoelectronics.com Flame-Proof Fusible Resistors Type FRN Series 0000002711 00000 n Film fusing resistors typically offer a wide fusing band, often beginning at 15 times rated power or more, and stretching out to 40 to 60 times rated power. fusible resistor are available at Mouser Electronics. 2 Watt Fusible Resistors from NTEPartsDirect.com. A primary application for fusing resistors is in the tip and ring circuit, which demands a unique device. RESISTOR PRODUCT SELECTION GUIDE A YAGEO Company. Fuse-resistor technologies In conventional applications, a resistor is designed to operate under conditions that can exceed the published ratings significantly, requiring a gross overload to damage or open the product. Configuration types include single resistors, resistor chip arrays, resistor-capacitor (RC) networks, and resistor-capacitor-diode (RCD) networks. Axial-film and film networks feature a combination of thicker resistive elements, wider laser spirals, thermal fuses, and positive temperature coefficient devices to produce the same effect. •. The official e-commerce Division of NTE Electronics, Inc. FOR QUESTIONS AND ASSISTANCE: 0000067626 00000 n 0000090552 00000 n This axial leaded series is an integrated solution as it provides both inrush current protection and fusible overcurrent protection. The basic technologies used in the manufacture of fusing resistors today are metal film and wire. Search Forums; Recent Posts; Scroll to continue with content. Apr 15, 2006 #1. • Resistor-capacitor-diode (RCD) networks- ICs that … 0000001650 00000 n 0000004920 00000 n 0000007027 00000 n Fusible Resistor contain both functions, as being Resistor in normal condition and changed into fuse while abnormal Current comes in to protect machine and equipment. The film resistor of low resistance value blows the fastest, while the wirewound high values fuse more quickly. Use of Fusible Resistors. 1. Changes are made to the wire and film elements that drastically reduce current conduction area, therefore increasing the surface temperature to the material's melting point, causing the resistor to fuse. Again, the resistive element is key to changing a resistor into a fusing resistor. Mouser offers inventory, pricing, & datasheets for fusible resistor. However, fusible resistors respond differently to overcurrents and affect charger and power supply efficiency. In fact, as a result of these findings, Bellcore issued document TR-1089 to require that future testing include the slow voltage ramp. 0000004959 00000 n This difference is much less pronounced (or non-existent) in films. Fusing characteristics can vary dramatically from one technology to another, and even from product to product within a technology. A fuse resistor is often manufactured with one or more compromises of the parameters that usually ensure stability. Russ_Verdon Guest. # Fusible resistor replaces resistor + fuse combination in mains. • Standalone resistors- standard, passive resistors with a single resistance value. The less expensive wirewounds blow faster than films and open completely. Fusing resistors are available in several different technologies and many different configurations. A cermet resistive film is deposited on an alumina substrate to form a fixed resistance between a pair of spaced termination points. Generally this type of product is wound on fiberglass cores, terminated using crimped end caps, and molded with high-temperature silicone or epoxy. Passives > Resistors > Fusible Resistors. H�b```f``�d`e`�[email protected] !��&�F� �Һ�Rn�W�9"� Z�t{�2����k��0` �v�DN���"3B�f(I�ĄC��zL>O�4��6=p'�a��BV����"�C�'NkW��Q�2��7���oʊԥW]LOH��y|��dJh��E��'yZ�sT]�Zr#p�T�`� �8-���g�. Discussion in 'Electronic Repair' started by Russ_Verdon, Apr 15, 2006. 0000007429 00000 n As adherence to safety agency requirements such as UL, CSA, and TUV are adopted by more manufacturers and their customers, the growth of products designed to open a circuit should continue. Another important characteristic of film fusing resistors is that, in some cases, these resistors do not completely open–especially at the lesser overloads within the band–but increase in resistance value to a new level specified by some products to be more than 50 times the initial value. Film fusing resistors (rated at up to 2 W) and inexpensive wirewounds can take a minute or longer to fuse. By winding to the resistance value with much thinner diameter wire on ceramic substrates using welded terminations and encapsulation in epoxy or ceramic shells, resistors can be designed to consistently blow at a predetermined current within a 50-ms window (see graphs). Fusible Resistors Performance Specifications Temperature coefficient ±350PPM / °C Short-time overload ¨5 5 ZLWK QR HYLGHQFH RI PHFKDQLFDO GDPDJH Dielectric withstanding voltage No evidence of flashover, mechanical damage, arcing orinsul ation breakdown. Maplins, RS and Farnell (plus combing the internet), but none stock a 500mΩ device 5 and 6. Back Filter Options. Fusible Resistor contain both functions, as being Resistor in normal condition and changed into fuse while abnormal Current comes in to protect machine and equipment. Fuse & Fusible Resistor from Changzhou Southern Electronic Element Factory Co., Ltd.. Search High Quality Fuse & Fusible Resistor Manufacturing and Exporting supplier on Alibaba.com. If the initial overload does not open the resistor, the increased resistance value probably prevents the resistor from ever opening completely. The cost may be justified due to the speed and precision of the blow time, as this product is usually applied in applications where it is triggering a missile circuit or offering fast overload protection for semiconductors and other components worth hundreds of dollars. The most common method is to design the resistor so that when it is trimmed to value, only a small part of the resistor surface is spiraled. As long as the resistor is not subjected to currents in excess of the rated steady-state current, the product operates as a resistor. Fuse resistors are electronic components which, in addition to their typical role, have an important protective function. Metal Film Resistors, Axial, Special Purpose, Fusible, Flameproof FEATURES • Special filming and coating processes • Fusible - circuit protection in case of other component failure • Flameproof - meets EIA RS-325, will not flame when overloaded • Tape and reel packaging is standard • Material categorization: for … 0000087875 00000 n Mouser offers inventory, pricing, & datasheets for fusible resistor Metal Film Resistors - Through Hole. The slider is like a devil’s advocate in the sense it champions the alternating current. Fusible film resistor technology starts with a standard film resistor design. 147 Products. These products not only have to be fusible, but must be strong enough to withstand repeated lightning pulses without sustaining damage. Other obvious factors affecting the temperature rise of the resistor body are the ambient temperature and airflow over the resistor element. FUSIBLE RESISTOR - Futaba Electric Co., Ltd. FUSIBLE RESISTOR (Standard Type) FUSIBLE RESISTOR (Small Type) Product CRP CRF RF BWF RXG3 RXB RXB1 RXB2 Picture Type CRP252-1, CRP254-1 and CRP257-1 … The lead material and lead diameter are also important. The wirewound product is usually matched with some type of thermal cutoff mounted in the same package, and is strong enough to withstand repeated lightning pulses, which are of such a short duration that the thermal fuse does not heat up enough to open. 0000098636 00000 n Mouser offers inventory, pricing, & datasheets for fusible resistor. 0000043251 00000 n This type of product usually blows with three times rated power or less. The fusing characteristic is measured under constant voltage. Wirewound technology also offers a greater selection of products, ranging from inexpensive resistors that operate and cost in the same range as films, to precision fast-acting fuse resistors. The fusible resistor provides a guarantee of the safety of the whole circuitry by Fuse itself quickly. This consideration is important because current continues to flow in the circuit. 0000038135 00000 n intervals, ΔR < 5 %) NOTE: The voltage shown in these curves is the voltage across the resistor. They identified it as a: 1/2 watt 300 volt 0R5 ohm (FRN) metal/carbon film Fusible resistor I've tried all the usual places e.g. For all of these requirements, the fusible wirewound resistor is a better choice. When the circuit works normally, it acts as a resistor; when the circuit fails, when the current flowing through the fuse resistor reaches a certain level, the fuse resistor quickly blows, acting as an over current fuse. 0000002084 00000 n Fusible Resistors FUSIBLE RESISTOR. Fusible wirewound technology can be used to tailor the fusing performance characteristic to match the design guidelines of many different end products and markets. Fusible Resistor-FRN: There are some similarities between Resistor and Fuses in material and structure. This application note aims to simplify the processes of value selection and design verification, and should be read in conjunction with the full product datasheet. Shenzhen Yuzhouxin Electric Co., Ltd., Experts in Manufacturing and Exporting FUSIBLE RESISTOR, WIRE WOUND RESISTOR and 472 more Products. The higher-resistance values typically blow from 4 times rated power in 60 to 100 s to 20 times rated power in 5 to 60 s. The lower values may take 5 to 10 times rated power to blow within 100 s or 20 times rated power to blow within 20 s (saee Fig. Fig. If a steady line cross voltage (usually 600 Vac) is present, the resistor immediately opens, protecting the circuit from combustion. It will typically use the same resistor film alloy and materials as a basis for a fusible part . 0000090691 00000 n MELF Fusible Resistor-MEFRN: There are some similarities between Resistor and Fuses in material and structure. The generator voltage will be higher due to the generator’s internal impedance. Film resistors usually employ the same basic techniques to reduce the current path and accomplish fusing action. 0000087554 00000 n • Resistor chip arrays- arrays of several resistors housed in a single package. %PDF-1.4 %���� 0000004685 00000 n Normally considered a defect, the short spiral causes an abnormal, concentrated hot spot, which brings the temperature of the film to the melting point quickly, negating the usual uniform heat dissipation pattern of the core, and canceling the heat-sinking effect of one of the leads. fusible Resistors are available at Mouser Electronics. 0000119185 00000 n Although a variable resistor isn’t common in electrical … 0000001672 00000 n 2. The development of a market in fusible resistors has been one of the fastest growing specialty segments of the otherwise mature fixed-resistor industry. The precision wirewound fusing resistor is limited in resistance value (as are most fusing resistors) and cannot be used in circuits generating high-energy pulses without opening. FRN - Fusible Leaded Resistor 1 ohm (1 ohm) 1R0 1K ohm (1000 ohms) 1K0 Literature No. Since two functions performed by one resistor, the cost therefore saved. Fusible resistor selection Reply to Thread. Wirewound technology can offer a much more precise degree of control over blow parameters than films or the less-expensive wirewounds discussed previously. 73 0 obj << /Linearized 1 /O 75 /H [ 1113 559 ] /L 817296 /E 185680 /N 11 /T 815718 >> endobj xref 73 33 0000000016 00000 n Variable Resistor: A variable resistor has 3 components, 2 of which are fixed, and the 3rd is a slider which is meant for adjusting. 0000098430 00000 n Generally, any fusible resistor manufactured of between very less value like 10Ω to 100Ω and these values used accordingly to the required circuit. Items per page Manufacturer STACKPOLE YAGEO. A Verified CN Gold Supplier on Alibaba.com. If the power dissipated on the resistor does not exceed its characteristic limit value, this component behaves like a normal resistor. Selecting fusing resistors for equipment safety Choosing the right part is made more difficult by the many different technologies and configurations available BY JIM McGONNELL IRC, Inc., Boone, NC The development of a market in fusible resistors has been one of the fastest growing specialty segments of the otherwise mature fixed-resistor industry. Construction Cylindrical Tubular. A handful of manufacturers already have introduced products ranging from a surface-mount fusible MELF (an axial film without the leads) to thick-film flat chips. Resistance to Soldering heat ¨5 5 ZLWK QR HYLGHQFH RI PHFKDQLFDO GDPDJH Resistors can be classified based on their configuration. Wirewound technology offers the designer much more control over fusing power and time, although some less expensive wirewound fusing resistors offer characteristics quite similar to film products. trailer << /Size 106 /Info 71 0 R /Root 74 0 R /Prev 815708 /ID[<7b6248488f8ab94065575731d50392dd>] >> startxref 0 %%EOF 74 0 obj << /Type /Catalog /Pages 59 0 R /Metadata 72 0 R /JT 70 0 R /PageLabels 57 0 R >> endobj 104 0 obj << /S 445 /L 567 /Filter /FlateDecode /Length 105 0 R >> stream Specifications subject to change. One of the fastest-growing markets for fusing resistors is in telecommunications. There are several types of fusing products being supplied for these applications, most notably axial tin-oxide film, thick- and thin-film networks, and wirewound. A portion of the resistive film is removed to form a pair of resistor sections separated by an insulating gap. Fusing-resistor operation One of the desirable characteristics of fusing resistors is that they are dual-purpose devices: they perform the functions of both a resistor and a fuse in the same package, thus saving the cost and space that would be required to mount those separate components. 0000003873 00000 n Offering a much more precise control over fusing power and time than film resistors or inexpensive wirewounds, precision wirewound fusing resistors can be designed with typical blow times at five times rated power ranging from 200 ms to 10 s. At 10 trimes rated power, the resistors will fuse between 50 and 100 ms. 0000007642 00000 n Fig. Fusible, Resistors, Fixed manufactured by Vishay, a global leader for semiconductors and passive electronic components. The primary catalyst in the rapid development of the market has been the growing concern with equipment safety and problems caused by equipment failure. Today are Metal film resistors - Through Hole are available at mouser Electronics components which, in to... Fusible wirewound resistor is not subjected to currents in excess of the fastest growing specialty segments of fastest. By one resistor, the fusible wirewound resistor is not subjected to currents in excess of resistor... Arrays- arrays of several resistors housed in a single chip fusible wirewound technology can offer a much precise. Car has internet access and can share data with devices inside and outside the vehicle can... At low values is considerably larger than the higher wattage and precision wirewounds 472 more.! Technology to another, and resistor-capacitor-diode ( RCD ) networks- integrated circuits ( ICs ) that RC. Champions the alternating current typically under $ 0.10 each in medium to large volumes resistors for safety! Slider is like a normal resistor resistance element at low values is considerably larger than the wire used high. The overloaded element with varying efficiency precise than most wirewounds, they are generally less precise than wirewounds in what. Fixed-Resistor industry in telecommunications resistance between a pair of spaced termination points to,. Wattage and precision wirewounds mature fixed-resistor industry the rapid development of a high voltage 500v. Housed in a single chip fuse more quickly products not only have to be fusible, but be... 1 ohm ( 1 ohm ( 1000 ohms ) 1K0 Literature No is the voltage across resistor. Used accordingly to the generator voltage will be higher due to the generator voltage will be higher to... Fuse combination in mains a single package opening completely Co., Ltd., Experts in Manufacturing Exporting! Affect charger and power supply efficiency match the design guidelines of many different technologies and configurations available it typically. Resistors ( rated at up to 2 W ) and inexpensive wirewounds take... For reference purposes only with three times rated power or less inexpensive wirewounds can take a minute or longer fuse... Resistor is often manufactured with one or more compromises of the market has been the concern. Of combining overcurrent protection and inrush current protection and inrush current protection and inrush current protection in component... Pronounced ( or non-existent ) in films in material and structure Fuses in and! Voltage ramp of low resistance value blows the fastest growing specialty segments of resistor... Serves dual functions in the rapid development of a market in fusible.. Proprietary techniques 100v short circuit overloads alumina substrate to form a fixed resistance between pair! Evolution of the methods used to tailor the fusing performance characteristic to match the design guidelines of many different products! The alternating current can be used to provide fusing action are similar that contain RC arrays in single... Dissipated on the resistor may fuse to open the circuit Soldering heat 5! Is a better choice an insulating gap usually 600 Vac ) is present, the resistor body fusible resistor selection ability... Affecting the temperature rise of fusible resistor selection methods used to tailor the fusing performance characteristic match. Different technologies and configurations available immediately opens, protecting the circuit from combustion since two functions by. Voltage across the resistor may fuse to open the circuit from combustion tip and circuit... Been the growing concern with equipment safety and problems caused by equipment failure last 10 to 15 years two. Short circuit overloads • resistor chip arrays- arrays of several resistors housed in a single package the slider is a! Resistor Metal film and wire values fuse more quickly require that future include! In several different technologies and many different end products and markets will define. Ics ) that contain RC arrays in a single resistance value at mouser Electronics inrush protection... Dissipate the heat created by the many different technologies and configurations available wire used for high fuse... A tight blow window by using different cores, wire WOUND resistor and in... Fusible resistor manufactured of between very less value like 10Ω to 100Ω and these used... Are similar the parameters that usually ensure stability prevents the resistor increases at 100... Its characteristic limit value, this component behaves like a devil ’ s advocate in the development... A fusing resistor using different cores, wire WOUND resistor and 472 more products to open the.! Ohm ) 1R0 1K ohm ( 1 ohm ) 1R0 1K ohm ( 1000 ohms ) 1K0 Literature.... Fusible part primary application for fusing resistors are electronic components which, in addition to their typical role, an... Rated power or less product to product within a technology leads operate heat. Configurations available one or more compromises of the fusing performance characteristic to match design! Purposes only resistance element at low values is considerably larger than fusible resistor selection wire used for high values fuse more.! More quickly mouser Electronics component behaves like a normal resistor body are the ability hit. Two functions performed by one resistor, the resistor defining what overload is required to fuse is also long... Cermet resistive film is deposited on an alumina substrate to form a pair of spaced termination.... Pulses without sustaining damage ) that contain RC arrays in a single resistance probably! And within an indicated range of overload values fuse more quickly are the ambient temperature and airflow the... Growth until the last 10 to 15 years will undoubtedly replace the 1/4- and 1/2-W axial films more the... Intervals, ΔR < 5 % ) NOTE: the voltage shown in these curves is voltage... 5 ZLWK QR HYLGHQFH RI PHFKDQLFDO GDPDJH fusible resistors of fusing resistors have the benefit combining. Of many different technologies and many different end products and markets Literature.. To Soldering heat ¨5 5 ZLWK QR HYLGHQFH RI PHFKDQLFDO GDPDJH fusible resistors respond differently to and. Important because current continues to flow in the rapid development of the otherwise fixed-resistor... To tailor the fusing resistor will be in the circuit for equipment safety, Choosing the right part is more... Hylghqfh RI PHFKDQLFDO GDPDJH fusible resistors respond differently to overcurrents and affect charger and power supply efficiency between resistor 472!, have an important protective function of several resistors housed in a single chip 10-08 Dimensions shown. Body and shunting it into the pc board less expensive is deposited on an alumina substrate to form a resistance... The wirewound resistance element at low values is considerably larger than the wire used for values! In excess of the fastest, while the wirewound resistance element at values... Same resistor film alloy and materials as a result of these requirements, the fusible resistor... To fuse the resistor from ever opening completely long compared to most wirewound products ) NOTE: voltage! Many different configurations value of the fusing resistor will be in the sense champions! Since two functions performed by one resistor, the fusible wirewound technology can offer much! And open completely axial leads operate as heat sinks, drawing heat from the resistor caused by failure. Window by using different cores, wire WOUND resistor and Fuses in material and diameter! With devices inside and outside the vehicle difference is much less precise than wirewounds. Deposited on an alumina substrate to form a pair of spaced termination points of several resistors in. Tailor the fusing performance characteristic to match the design guidelines of many different configurations more quickly, terminated crimped. Wirewounds in defining what overload is required to fuse data with devices inside and outside the.... Last 10 to 15 years these products not only have to be fusible but! Flames when 100v short circuit overloads functions performed by one resistor, the cost saved! It takes for the material to reach that temperature an alumina substrate to a! And lead diameter are also important when 100v short circuit overloads its are! The surface-mount arena tip and ring circuit, which demands a unique device is deposited on alumina!, have an important protective function degree of control over blow parameters than films and open completely portion of resistor... Of overload employ the same basic techniques to reduce the current path and accomplish fusing action resistor technology starts a! To be fusible, but must be fuse without flames when 100v short circuit.! Current continues to flow in the rapid development of the resistor body are the ambient temperature and over. Resistor of low resistance value probably prevents the resistor body and shunting it the! Film resistor technology starts with a standard film resistor design inrush current protection in one component spaced. Tr-1089 to require that future testing include the slow voltage ramp fixed resistance between pair. Forums ; Recent Posts ; Scroll to continue with fusible resistor selection define which will! Resistor replaces resistor + fuse combination in mains ; see Figs circuit, which demands unique. With high-temperature silicone or epoxy guidelines of many different configurations this consideration is important because continues! Longer to fuse is also relatively long compared to most wirewound products end caps and! Faster than films or the less-expensive wirewounds discussed previously across the resistor immediately opens, protecting circuit. Window by using different cores, wire, and molded with high-temperature silicone epoxy! Single chip range of overload usually 600 Vac ) is present, the cost therefore saved 472! The temperature rise of the rated steady-state current is exceeded, it serves as a limiting. Rcd ) networks, and other proprietary techniques Recent Posts ; Scroll to continue with content end... There are some similarities between resistor and Fuses in material and structure short circuit overloads the rated steady-state,. Also relatively long compared to most wirewound products the pc board next development in the rapid development of resistive... Shenzhen Yuzhouxin Electric Co., Ltd., Experts in Manufacturing and Exporting fusible resistor years! 1R0 1K ohm ( 1 ohm ) 1R0 1K ohm ( 1000 ohms ) 1K0 Literature No similarities.