DR127-R47-R Inductors, Coils, Chokes

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Fixed inductors are components in electrical and electronic circuits consisting of a coil of wire wound around an inner core of ferrous metal (usually iron) or a conductive core or a core of ferrite. The core supports the winding and prevents it from collapsing while allowing the magnetic field to travel freely. Inductors are also referred to as coils and can be made from a variety of materials including copper wire, beads, and air-core coils. Fixed inductors are typically used to:

• Store energy in magnetic fields.
• Provide an electrical circuit with a high impedance.
• Couple signals from one stage of a circuit to another.
• Provide a filtered signal to reduce noise or other unwanted signal components.
• Provide a path for electrical current in a circuit.

The DR127-R47-R is a fixed inductor manufactured by Motorola. This inductor features a 4700uH inductance, a 10% tolerance, and a 0.200" diameter. It is a radial component with leads on either side. The DR127-R47-R has a low DC resistance of 0.344 ohms and a low DC current rating of 2.35 Amps. It has a maximum operating temperature of 85°C and is designed primarily for use in automotive, cell phone, communications, and security applications. The main operating principle of this inductor is to create an opposition to changes in electrical current.

When the electrical current through a coil of wire is changed, a magnetic field is generated. This magnetic field induces a second current in the coil (Back EMF) that opposes the first current. This opposition is known as inductance. The DR127-R47-R is especially suited to applications where a steady or sustained current is needed. It also does a good job of filtering signal interference and suppressing unwanted signal components.

The DR127-R47-R fixed inductor from Motorola is an ideal choice for a wide range of electrical applications. It is capable of handling high current load with low DC resistance and is suitably resistive to signal interference. Capable of dissipating heat effectively, the DR127-R47-R is perfect for automotive, communications, cell phone, and security applications where a sustained or steady current and low signal interference is desired.

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