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SDES LIMITED was established in 2001. It has been emerged as a leading global distributor of electronic components. We specialize in factory allocated, obsolete, hard to find or long lead time components. We provide our customers with one-stop service for all their purchasing needs.

5AGXMA3D4F27I3G
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Altera
A3P1000-FGG484I
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ACTEL
ADSP-21060LCW-160
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ADI
EP2AGX190EF29I3G
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Altera
EP2C15AF484C6N   
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IDT72V2103L10PFI
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IDT
KTI226V SRKTV
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INTEL
LFXP2-5E6FTN256C
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Lattice Semiconductor Corporation
MC68HC000CRC12
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Motorola
MCF5216CVM66
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Freescale
MCF5485CVR200
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NXP
MKV31F256VLL12
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NXP
MV64360-B1-BAY1-C133
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Marvell Semiconductor, Inc.
PEX8717-CA80BCG
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PCI6154-BB66BC-G
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Avago Technologies Limited
PEX8780-AB80BI-G
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PI3106-00-HVMZ
隔离式直流-直流转换器(SMD型) 28V/12V50W MIL COTS ISO DC-DC CONVT
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Vicor
RDC-19220-103
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UMX-436-B14-G
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WS128K32V-20G2UI
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Lattice Semiconductor Corporation
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Marvell Semiconductor, Inc.
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Avago Technologies Limited
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隔离式直流-直流转换器(SMD型) 28V/12V50W MIL COTS ISO DC-DC CONVT
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Vicor
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Coil production is a crucial process in the manufacturing industry, as coils are used in a wide range of applications, from electrical components to automotive parts. The mainstream coil production process involves several steps, each of which is essential to ensure the quality and performance of the final product.The first step in the coil production process is the selection of the raw materials. The most common materials used for coil production are copper and aluminum, as they have excellent electrical conductivity and are readily available. The raw materials are typically in the form of wire or strip, and they must meet certain specifications in terms of purity, conductivity, and mechanical properties.Once the raw materials have been selected, they are fed into a coil winding machine. This machine is equipped with a spool of wire or strip, which is fed through a series of guides and tensioning devices to ensure that the coil is wound evenly and tightly. The winding machine may be manual or automated, depending on the size and complexity of the coil being produced.As the wire or strip is fed through the winding machine, it is wound around a cylindrical or rectangular core. The core may be made of plastic, paper, or metal, depending on the application of the coil. The number of turns and the spacing between turns are critical factors that determine the electrical properties of the coil, so the winding machine must be carefully calibrated to ensure that the coil meets the required specifications.After the coil has been wound, it is typically coated with a layer of insulation to protect it from environmental factors and prevent electrical shorts. The insulation material may be a thin layer of varnish, enamel, or tape, depending on the application of the coil. The insulation process may be done manually or using automated equipment, and it is essential to ensure that the insulation is applied evenly and without any defects.Once the coil has been insulated, it may undergo additional processes to enhance its performance. For example, the coil may be impregnated with a resin or epoxy to improve its mechanical strength and thermal conductivity. The coil may also be subjected to heat treatment to relieve internal stresses and improve its electrical properties.Finally, the coil is tested to ensure that it meets the required specifications. This may involve measuring its electrical resistance, inductance, and capacitance, as well as conducting high-voltage tests to ensure that the insulation is effective. Any coils that do not meet the required standards are rejected and may be reworked or scrapped.In conclusion, the mainstream coil production process is a complex and precise operation that requires careful attention to detail at every step. By selecting the right raw materials, using advanced winding machines, applying proper insulation, and conducting thorough testing, manufacturers can produce high-quality coils that meet the demanding requirements of modern applications.
Inductors are passive electronic components that store energy in the form of a magnetic field when an electric current passes through them. They are commonly used in a variety of electronic circuits to control the flow of current and filter out unwanted signals. There are several popular models of inductors that are commonly used in electronic devices and systems. In this article, we will explore some of the most popular types of inductors and their applications.1. Wirewound Inductors:Wirewound inductors are one of the most common types of inductors used in electronic circuits. They are made by winding a conductive wire, such as copper, around a core material, such as ferrite or iron. Wirewound inductors are known for their high inductance values and low resistance, making them ideal for applications that require high current handling capabilities and low losses.Wirewound inductors are used in a wide range of applications, including power supplies, filters, and RF circuits. They are available in various shapes and sizes, including axial lead, radial lead, and surface mount packages. Wirewound inductors are also available in both fixed and variable inductance values, allowing for greater flexibility in circuit design.2. Toroidal Inductors:Toroidal inductors are another popular type of inductor that is commonly used in electronic circuits. They are made by winding a conductive wire around a toroidal core, which is typically made of ferrite or powdered iron. Toroidal inductors are known for their high inductance values, low electromagnetic interference, and compact size.Toroidal inductors are used in a wide range of applications, including power supplies, audio equipment, and telecommunications systems. They are known for their high efficiency and low losses, making them ideal for applications that require high performance and reliability. Toroidal inductors are available in various sizes and inductance values, allowing for greater flexibility in circuit design.3. SMD Inductors:Surface mount device (SMD) inductors are a popular type of inductor that is designed for surface mount applications. They are made by winding a conductive wire around a core material, such as ferrite or ceramic, and are typically housed in a compact, surface mount package. SMD inductors are known for their small size, high inductance values, and low resistance.SMD inductors are used in a wide range of applications, including mobile devices, computers, and automotive electronics. They are known for their high reliability and performance, making them ideal for applications that require compact size and high efficiency. SMD inductors are available in various shapes and sizes, including chip, molded, and shielded packages, allowing for greater flexibility in circuit design.4. Multilayer Inductors:Multilayer inductors are a type of inductor that is made by stacking multiple layers of conductive material and insulating material on top of each other. This design allows for a higher inductance value in a smaller footprint, making them ideal for applications that require high inductance values in a compact size.Multilayer inductors are used in a wide range of applications, including mobile devices, wireless communication systems, and medical devices. They are known for their high performance and reliability, making them ideal for applications that require high frequency operation and low losses. Multilayer inductors are available in various shapes and sizes, including chip, molded, and shielded packages, allowing for greater flexibility in circuit design.5. Variable Inductors:Variable inductors are a type of inductor that allows for the adjustment of the inductance value by changing the position of a movable core inside the inductor. This design allows for greater flexibility in circuit design and tuning of the inductance value to meet specific requirements.Variable inductors are used in a wide range of applications, including tunable filters, oscillators, and impedance matching circuits. They are known for their versatility and ability to adjust the inductance value in real-time, making them ideal for applications that require precise control of the inductance value. Variable inductors are available in various shapes and sizes, including rotary, slide, and trimmer packages, allowing for greater flexibility in circuit design.In conclusion, inductors are essential components in electronic circuits that play a crucial role in controlling the flow of current and filtering out unwanted signals. There are several popular models of inductors that are commonly used in electronic devices and systems, each with its own unique characteristics and applications. Whether you are designing a power supply, filter, or RF circuit, there is a wide range of inductors available to meet your specific requirements. By understanding the different types of inductors and their applications, you can choose the right model for your circuit design and ensure optimal performance and reliability.
Dip-dial potential meters are a type of electronic device used to measure voltage levels in electrical circuits. They are commonly used in a variety of applications, including electronics testing, calibration, and troubleshooting. These meters are known for their accuracy, reliability, and ease of use, making them a popular choice among professionals and hobbyists alike.There are several key product categories of dip-dial potential meters, each with its own unique features and capabilities. In this article, we will explore these categories in detail, discussing their uses, advantages, and limitations.1. Analog Dip-Dial Potential Meters:Analog dip-dial potential meters are the most traditional type of potential meter, featuring a dial or knob that is used to manually adjust the voltage level being measured. These meters typically have a needle or pointer that moves across a scale to indicate the voltage reading. Analog dip-dial potential meters are known for their simplicity and ease of use, making them a popular choice for basic voltage measurement tasks.One of the main advantages of analog dip-dial potential meters is their accuracy. These meters are capable of providing precise voltage readings, making them ideal for applications where accuracy is critical. Additionally, analog dip-dial potential meters are often more affordable than their digital counterparts, making them a cost-effective option for budget-conscious users.However, analog dip-dial potential meters do have some limitations. For example, they may not be as versatile as digital meters, as they are typically limited to measuring voltage levels only. Additionally, analog meters may be more susceptible to interference and noise, which can affect the accuracy of the readings.2. Digital Dip-Dial Potential Meters:Digital dip-dial potential meters are a more advanced type of potential meter that features a digital display for easy reading of voltage levels. These meters typically have a dial or knob for adjusting the voltage level, along with a digital display that shows the precise voltage reading. Digital dip-dial potential meters are known for their accuracy, versatility, and advanced features, making them a popular choice for professional users.One of the main advantages of digital dip-dial potential meters is their versatility. These meters are capable of measuring a wide range of voltage levels, making them suitable for a variety of applications. Additionally, digital dip-dial potential meters often come with advanced features such as data logging, peak hold, and auto-ranging, which can enhance their functionality and usability.Another advantage of digital dip-dial potential meters is their ease of use. The digital display makes it easy to read voltage readings at a glance, eliminating the need to interpret a needle or pointer on a scale. This can save time and reduce the risk of errors when taking measurements.However, digital dip-dial potential meters may be more expensive than analog meters, making them less accessible to budget-conscious users. Additionally, digital meters may require batteries or a power source to operate, which can be a drawback in certain situations.3. Portable Dip-Dial Potential Meters:Portable dip-dial potential meters are a compact and lightweight type of potential meter that is designed for on-the-go use. These meters are typically battery-powered and feature a durable construction that can withstand rough handling and harsh environments. Portable dip-dial potential meters are ideal for fieldwork, troubleshooting, and other applications where mobility is essential.One of the main advantages of portable dip-dial potential meters is their portability. These meters are small enough to be carried in a pocket or tool bag, making them convenient for use in remote locations or tight spaces. Additionally, portable dip-dial potential meters are often rugged and durable, making them suitable for use in challenging environments.Portable dip-dial potential meters may also come with additional features such as built-in test leads, protective cases, and backlight displays, which can enhance their usability and functionality. These features can make it easier to take measurements in low-light conditions or cramped spaces.However, portable dip-dial potential meters may have limitations in terms of accuracy and precision compared to larger, more stationary meters. Additionally, portable meters may have a limited range of measurement capabilities, which can restrict their use in certain applications.4. Benchtop Dip-Dial Potential Meters:Benchtop dip-dial potential meters are a larger and more stationary type of potential meter that is designed for use in a laboratory or workshop setting. These meters are typically mounted on a bench or table and feature a stable base for accurate measurements. Benchtop dip-dial potential meters are ideal for applications that require high precision and stability, such as calibration and testing.One of the main advantages of benchtop dip-dial potential meters is their accuracy and precision. These meters are designed to provide highly accurate voltage readings, making them suitable for applications where precision is critical. Additionally, benchtop dip-dial potential meters may have a wider range of measurement capabilities compared to portable meters, allowing for more versatile use.Benchtop dip-dial potential meters may also come with advanced features such as multiple input channels, data logging, and computer connectivity, which can enhance their functionality and usability. These features can make it easier to perform complex measurements and analysis tasks in a laboratory setting.However, benchtop dip-dial potential meters may be more expensive and less portable than portable meters, making them less suitable for fieldwork or on-the-go use. Additionally, benchtop meters may require a stable power source and a dedicated workspace, which can be a drawback in certain situations.In conclusion, dip-dial potential meters are a versatile and essential tool for measuring voltage levels in electrical circuits. By understanding the key product categories of dip-dial potential meters, users can choose the right meter for their specific needs and applications. Whether you need a basic analog meter for simple voltage measurements or a high-precision digital meter for complex testing tasks, there is a dip-dial potential meter available to suit your requirements.
The wireless charging coil industry is currently experiencing significant growth and innovation as demand for wireless charging technology continues to rise. With the increasing popularity of smartphones, smartwatches, and other electronic devices that support wireless charging, the market for wireless charging coils is expected to expand even further in the coming years.Wireless charging coils are an essential component of wireless charging systems, which allow users to charge their devices without the need for cables or cords. These coils are typically made of copper wire wound around a core material, such as ferrite or iron, and are designed to generate a magnetic field that transfers power from a charging pad to a device.One of the key drivers of growth in the wireless charging coil industry is the increasing adoption of wireless charging technology in a wide range of electronic devices. In addition to smartphones and smartwatches, wireless charging is now being integrated into laptops, tablets, and even electric vehicles. This trend is expected to drive demand for wireless charging coils as manufacturers seek to incorporate wireless charging capabilities into their products.Another factor contributing to the growth of the wireless charging coil industry is the ongoing development of new and improved wireless charging technologies. For example, companies are working on increasing the efficiency and speed of wireless charging systems, as well as expanding the range over which devices can be charged wirelessly. These advancements are driving demand for more advanced and specialized wireless charging coils that can meet the requirements of these next-generation wireless charging systems.In addition to technological advancements, the wireless charging coil industry is also benefiting from the increasing focus on sustainability and energy efficiency. Wireless charging is seen as a more environmentally friendly alternative to traditional wired charging, as it eliminates the need for disposable cables and reduces energy consumption. As a result, consumers and businesses are increasingly turning to wireless charging solutions, further driving demand for wireless charging coils.Despite the positive outlook for the wireless charging coil industry, there are still some challenges that need to be addressed. One of the main challenges is the lack of standardization in the wireless charging market, which can make it difficult for manufacturers to develop products that are compatible with a wide range of devices. In addition, concerns about the safety and reliability of wireless charging technology continue to be a barrier to widespread adoption.Overall, the wireless charging coil industry is poised for continued growth and innovation as demand for wireless charging technology continues to increase. With advancements in technology, increasing adoption of wireless charging in a variety of electronic devices, and a growing focus on sustainability, the future looks bright for the wireless charging coil industry. As companies continue to invest in research and development, we can expect to see even more advanced and efficient wireless charging solutions in the years to come.

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