42J18R

Series:	Ohmicone® 40
Packaging:	Bulk
Part Status:	Active
Resistance:	18 Ohms
Tolerance:	±5%
Power (Watts):	2W
Composition:	Wirewound
Features:	--
Temperature Coefficient:	±20ppm/°C
Operating Temperature:	--
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.220" Dia x 0.406" L (5.60mm x 10.30mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Through Hole Resistors, 42J18R Application Field and Working PrincipleThrough hole resistors, sometimes referred to as through-hole component, are resistors that are mounted by inserting them through a hole in the board and then soldering them in place. This type of resistor is usually used for large and heavy power applications because they are more robust than surface mount components and can handle higher power levels. The 42J18R is a type of through hole resistors with a high resistance. It is typically used for voltage dividers, voltage regulators, line filters, and various other applications where a high resistance is needed.The 42J18R through hole resistor consists of a cylindrical metal tube or rod, typically made of manganese or chromium, with an insulation layer of plastic or ceramic coating the exterior. Inside the tube are several layers of winding consisting of 100’s of individual carbon rods, which connect the inner and outer contacts. The outer contacts of the resistor are typically made of either copper or tin. The windings are arranged in such a way that they provide resistance to the flow of electrical current.The resistance of the resistor is determined by the number of layers of winding and the length of the winding coil. The current rating is determined by the diameter of the wire used in the resistor, as well as the surface area of the coil. The electrical current that flows through these resistors is determined by the resistor’s resistance. This resistance is usually measured in ohms, which is a measure of the quantum resistance to the flow of electrical current.When the current encounters the resistor, it is divided into two equal parts by the resistance of the resistor. This can be used to regulate the voltage of the system, as the resistance of the resistor prevents the voltage from changing. The current flowing through the resistor is then dissipated as heat. This heat can be dissipated to the environment or dissipated within the resistor itself.The 42J18R through hole resistors are used in various applications where high resistance is needed. These include voltage dividers, voltage regulators, line filters, current surge protection, and ground fault isolation. They are also used in medical equipment, automotive systems, and communications systems.In medical equipment, these resistors are used to protect delicate medical equipment and devices from potentially damaging power spikes. In automotive systems, these resistors are used to regulate the amount of current delivered to motors and other components. In communication systems, these resistors provide high resistance between the transmitting and receiving sides of the system.Because these resistors are physically large and heavy, they are usually used in large and heavy applications, such as industrial machines and equipment. Due to the improved reliability and longer lifespan of the 42J18R resistors, they are an excellent choice for these types of applications. They are also cost-effective and typically have a long lifespan.Overall, the 42J18R through hole resistors are an invaluable tool in various applications. They provide high resistance, reliability, cost-effectiveness, and a long lifespan. These characteristics make them the ideal choice for large and heavy duty applications.

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Part Number	Manufacturer	Price	Quantity	Description