SMD Coil – Surface Mount Chip Coil Guide
SMD Coil – What is SMD Coil, What are different types of SMD coils or inductor. Which type of SMD Coil is used in mobile phones. Learn all about SMD coils.
SMD Coil – What is SMD Coil, What are different types of SMD coils or inductor. Which type of SMD Coil is used in mobile phones. Learn everything about SMD coils.
What is SMD Coil and How is it Made?
SMD Chip Coil is made by twisting any conductor wire on a bad conductor base. The base on which the coil is formed is called core. When these coils do not have any base, they are called air core coil. Coil is also known as inductor.
A coil always resists any variation in flow of current. If any variable supply is given to any coil, the voltage of opposite polarity is generated in the coil. This property of a coil is known as inductance. Hence, a coil is also called inductor.
The main function of a Coil is to STOP AC and PASS DC.
The Graphical Symbol of Coil is:
Coil Symbol
What is Inductor / Coil and How it Works?
Types of SMD Coil or Inductor
There are many types of coil but surface mount coils are mostly used in mobile phones. These are tiny chip inductors directly soldered on the PCB track on the mobile cell phone.
This type of inductor is called general purpose inductor. This is used for sharp frequency response for high quality factor.
These inductors are made by spiraling wire on ferrite core with magnetic shield and surface mounting terminals are created on both ends after mounting it in a small hard package. These terminals are nickel coated for easy and better soldering on PCB Track. Nickel coating ensures reliable soldering.
Which character or alphabet indicates a Coil and Unit of Coil ?
Coil is indicated by the alphabet L
The Unit of Coil is Henry.
Effect of AC and DC on Coil / Inductor
A Coil passes DC Current like an ordinary wire. Magnetic properties are generated in the coil on getting DC. The power in the coil attracts iron particles.
When AC current or Alternate Current or Variable Electric Current is given to a coil, a variable magnetic electric field is generated in the coil. AC voltage in opposite directions is generated due to this variable magnetic field which resists the AC volt.
How to Check SMD Coil with Multimeter?
Place the selector knob of the Multimeter on Diode Sign. Now place the probes on both the terminals of the coil. If a beep sound is produced and the display reads close to 000, it means that the coil is OK. If the display shows 1, it means the coil is open or faulty.
Different Types of SMD Components
SMD Coil FAQs
What are the advantages of using SMD Coils?
There are several advantages to using SMD coils, including their small size, which allows for high-density PCB designs. They are also generally more reliable and efficient than traditional through-hole coils. Additionally, SMD coils are easier and faster to assemble, which can result in lower manufacturing costs.
How do I choose the right SMD Coil for my application?
When selecting an SMD coil, it's important to consider factors such as the required inductance value, current rating, and operating frequency range. You should also consider the physical size and shape of the coil, as well as the specific requirements of your application.
What are some common applications of SMD Coils?
SMD coils are used in a wide range of electronic devices, including mobile phones, computers, televisions, and automotive electronics. They are commonly used as inductors to filter and regulate electrical signals, as well as in transformers to convert voltage and current levels.
How can I ensure that my SMD Coils are properly installed and soldered?
To ensure that your SMD coils are properly installed and soldered, it's important to follow the manufacturer's recommended guidelines for mounting and soldering. This may include using a specific type of solder and soldering iron, as well as ensuring that the correct temperature and soldering time are used. Additionally, you should inspect the solder joints after assembly to ensure that they are free of defects such as solder bridges or voids.
Also Read:
- Electronic Components of Mobile Phone and Their Function
- Surface Mount Device (SMD) or Surface Mount Electronic Components
- SMD Resistor – Surface Mount Chip Resistor Guide
- SMD Capacitor – Surface Mount Chip Capacitor Guide
- SMD Transformer – Surface Mount Chip Transformer Guide
- Surface Mount Transistor in Mobile Cell Phone and Their Function
- Integrated Circuit (IC) – IC Basic Tutorial
- Where To Buy Electronic Components in India
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i have s6 edge plus. main nay heat gun say heat dee hay sab ic ko but still same can u help
Give Power with a DC Power supply and check with finger if some IC is Heating or Not. If any IC is Heating then it is Faulty.
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resistor is only top side black and other to sides is wight color and coil is all sides black
How to find a coil in mobile phone. Both coil and resistor are looking same. Both colour is black.
how to test unprinted resistor