PNP3WVJR-73-5R

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Through hole resistors are a type of resistor that is passed through a plated through hole in printed circuit boards. They are usually used to limit the current within an electronic circuit, protect components from too much power, and provide particular voltages and currents to components. The PNP3WVJR-73-5R is one such resistor.

PNP3WVJR-73-5R Application Field and Working Principle

The PNP3WVJR-73-5R is an axial lead resistor, designed to be used in a wide variety of electronic applications. It is made from a thick metal rod, or “lead”, submerged in a metal alloy which is then plated with a protective coating. At the end of the rod is a ventilated cylindrical metal casing which protects the resistor, as well as providing electrical insulation between pins. The resistance value, tolerance, temperature coefficient, and power rating are all printed on the cylindrical casing.

PNP3WVJR-73-5R resistors are used in a variety of applications, from protecting components from overtaxing to providing precise control over a system voltage or current. When used in series, the resistor value determines the amount of current split between each component. When used in parallel, the resistor value restricts the total current that would otherwise flow to all the components connected.

How a resistor works is determined by the resistance coefficient, which is a measure of how much the resistor impedes current flow in an electrical circuit. When a voltage is applied to the resistors leads, electrons within the resistor travel a certain distance before colliding with the atoms of the resistor material. These collisions create friction, which increases with more resistance. As voltage is increased, so is the current, which increases the number of collisions and thus creates more frictional energy, causing a drop in voltage.

The PNP3WVJR-73-5R is designed to provide long-lasting stability, as well as having a wide operating temperature range from -55°C to 150°C. It can handle a maximum continuous operating power of 0.33 W, and a surge power rating of 1W. It has a 3.3 resistance value with a 5% tolerance. Temperature coefficients of less than ±150 ppm/℃ ensure that any values over the operating temperature range will still maintain a consistent resistance.

To install, one sets the resistor into the plated through hole on the board and applies forces on each end of the lead, effectively locking it in place on the circuit board. This arrangement provides secure mounting for the resistor and eliminates the possibilities of short-circuiting and inductive coupling.

Through hole resistors such as the PNP3WVJR-73-5R are essential components in any electrical system, allowing for precise voltage and current control to specific components and devices. Their wide temperature range, high surge power rating, and excellent stability makes them an ideal choice for any application.

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