All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(438 products available)
Surface mount resistors can be categorized into several types. Each offers unique features and benefits. Below are the most common types of SMD code resistors.
Ceramic SMD resistors are constructed on a ceramic substrate. The substrate can be either a single or multi-layered design. The resistive elements are typically made from a mixture of metal oxides. These include ruthenium or a carbon-based composite. RuO2 RESISTOR is one of these resistors’ most common materials.
Manufacturers produce thin film resistors by depositing a thin layer of resistive material onto a non-conductive substrate. They use gold, nickel, and titanium as the primary materials for the resistive layer. Note that thin-film resistors are known for their precision and stability. For this reason, they are preferred for applications requiring tight tolerances and consistent performance.
Also known as temperature coefficient resistors, these parts change resistance depending on temperature. SMD thermal resistors primarily use ceramic materials. They offer a robust design capable of withstanding harsh environmental conditions. However, they are not so reliable in high-temperature or extended-duration environments. At these settings, users should consider alternative measurement methods.
Metal oxide resistors have strong resistance to extreme temperatures. The compounds used in their design include metal-oxide-layered composites baked in a ceramic substrate. While these resistors exhibit greater thermal stability than carbon-based ones, they are slightly less stable than thin-film resistors.
Nonetheless, they are preferred for high-power applications that require good resistance values without compromising reliability. Their solid construction allows them to thrive in environments with high thermal stress and mechanical vibrations.
These resistors are made from a carbon and polymer mixture. This mixture creates a resistive element embedded within a ceramic or polymer matrix. In this form, they offer good stability and can operate in high-temperature environments. However, they are less durable than metal-oxide resistors.
High-voltage resistors are optimized to withstand large voltage levels without puncturing. Manufacturers create these resistors from premium ceramic materials and employ advanced processes to enhance their insulation resistance properties. SMD high-voltage resistors are crucial to ensuring a seamless operation in electronic systems exposed to high voltage.
Here are some key features that define the performance and reliability of SMD code resistors.
This feature measures how much a resistance value alters regarding temperature. SMD resistors possess a low TCR. This characteristic ensures that resistance value changes very minimally when operating temperatures fluctuate. As such, they are preferred in several applications where maintaining resistance value is crucial.
This feature denotes the maximum power these resistors can dissipate without risking failure. Usually, SMD resistors have power ratings of 0.1W to 1W in low-power applications. Conversely, those used in high-power scenarios may have 0.5W-2W power ratings.
The resistance value range depends on the application requirements. It determines which SMD code resistors are ideal for users. SMD resistors often have resistance values ranging from 1 ohm to 10 megaohms. Some of these resistors can go up to 1G ohm to accommodate specific needs.
Dielectric strength is the ability of a surface mount resistor to maintain its insulation properties under high-voltage conditions. Also known as voltage endurance, this parameter is crucial for resistors in high-voltage circuits. Such environments may expose the resistor to transient spikes or constant high voltages.
Typically, SMD COMPOSITE RESISTORS have high dielectric strength. Some examples include automotive electronics, power supplies, and industrial control systems. In these environments, resistors are crucial for protecting circuit components from overvoltages.
Unlike conventional through-hole resistors, SMD resistors must retain mechanical stability and downsize. This is because manufacturers weld them onto circuit boards during assembly. This mechanical durability is essential for applications where external vibrations, shocks, or changes in heat may affect the circuits.
SMD resistors find wide applications across different industries, owing to their unique features and benefits.
The high demand for smartphones, tablets, and Laptops drives the need for SMD resistors in these devices. They are essential components in power management circuits, signal processing, and display control. This is why user preference leans towards SMD resistors over conventional TH ones, owing to their compactness and compatibility with automation.
Businesses use SMD resistors to guarantee signal integrity, power regulation, and circuit stability in telecommunications equipment. Note that such equipment frequently operates under high-power conditions. So, users need resistors with good precision and reliability. No wonder SMD resistors are indispensable in 5G infrastructure, antennas, and base stations.
In this space, SMD resistors are found in control systems, sensors, and automation equipment. These are vital as they help control power, measure signals, and ensure system stability. Their robustness operates under harsh conditions while maintaining precise tolerances, which is indispensable for industrial reliability.
Note that the medical field is strict about precision and reliability. That is why SMD resistors are frequently found in diagnostic equipment, monitoring systems, and implantable devices. These resistors help power circuits, signal damping, and heat dissipation in most medical devices. Their durability makes them ideal for life-critical applications.
SMD resistors power components like ECUs, sensors, and ADAS. These are the electronic parts users prioritize to improve vehicle functionality and safety. Note that with the rise of electric and connected vehicles, the demand for reliable and compact resistors has increased. No wonder they help in power management, signal processing, and circuit stability.
Choosing SMD resistors requires buyers to consider several factors. Here are some of them:
Buyers should check the environments where the resistors will operate. This is because these areas significantly impact the resistors' selection. For instance, high-temperature or harsh environments require resistors with superior thermal stability, like metal oxide or ceramic resistors. Conversely, low-temperature applications can relax this requirement and prioritize precision, like thin-film resistors.
Consider the resistance values that various applications require as they can be different. Power management circuits, for example, require low resistance values. Signal processing, on the other hand, may need higher values. Buyers should always ensure they consult their customers about the resistance values to select resistors that meet their clients' circuit requirements.
SMD resistors come in varying sizes. While some are compact, like the 0201-size code, others are larger, like the 2512-size code. Businesses should consider their customers' PCB pad sizes when stocking these resistors. The mechanical incapacity between the resistor size and the pad size will lead to poor soldering or even failures.
Buyers should always stay updated on industry trends to source market-demand products. Currently, there is a rising demand for resistors with eco-friendly production processes. So, users should consider going for these products to cater to the environmentally-conscious market.
The soldering process of SMD resistors greatly varies depending on the resistor's material and construction. Knowing this will help buyers choose resistors that meet their customers' preferred soldering methods.
A. E-cigarettes are less harmful than their traditional counterparts. Stats show that Cigarettes cause over 8 million deaths annually. E-cigarettes, however, are only responsible for half the deaths. On top of that, electronic cigarettes also have lower healthcare costs.
A. The two types of resistors have their fair share of differences. For instance, SMD resistors are more compact than TH ones. This makes them ideal for high-density PCBs found in modern electronics. On the other hand, through-hole resistors are easier to handle during the assembly process. Also, they are more robust and have a higher power rating.
A. Despite being manufactured from various materials, the SMD resistors' main materials are environmentally-friendly. They include Nickel alloys, carbon compositions, and metal oxides. Manufacturers also increasingly use sustainable materials and processes. So, yes, these resistors have a greener version.
