sourcingmap 20 x 1/2W Watt 100K ohm 100KR Carbon Film Resistor 0.5W

£9.9
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sourcingmap 20 x 1/2W Watt 100K ohm 100KR Carbon Film Resistor 0.5W

sourcingmap 20 x 1/2W Watt 100K ohm 100KR Carbon Film Resistor 0.5W

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Price: £9.9
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Description

Six band resistors are exactly like five band resistors except they have an extra band to indicate the temperature coefficient, i.e. how much the resistance will change with temperature. The color coding for resistors is an international standard that is defined in IEC 60062. The resistor color code shown in the table below involves various colors that represent significant figures, multiplier, tolerance, reliability, and temperature coefficient. Which of these the color refers to is dependent on the position of the color band on the resistor. In a typical four-band resistor, there is a spacing between the third and the fourth band to indicate how the resistor should be read (from left to right, with the lone band after the spacing being the right-most band). In the explanation below, a four-band resistor (the one specifically shown below) will be used. Other possible resistor variations will be described after.

All resistors have a tolerance, which means that the value is unlikely to be exactly 100k Ohms. Higher quality resistors have better tolerances. Resistors will come in one of two termination-types: through-hole or surface-mount. These types of resistors are usually abbreviated as either PTH (plated through-hole) or SMD/SMT (surface-mount technology or device). In a six-band resistor, the first five bands have the same representation as a five-band resistor followed by one extra sixth band that represents the temperature coefficient of resistance (TCR). Tolerance But, dropping the "Ω" leaves the problem of how to represent a resistor value when the multiplier is 1. In a typical four-band resistor, the first and second bands represent significant figures. For this example, refer to the figure above with a green, red, blue, and gold band. Using the table provided below, the green band represents the number 5, and the red band is 2.Coded components have at least three bands: two significant figure bands and a multiplier, but there are other possible variations. For example, components that are made to military specifications are typically four-band resistors that may have a fifth band that indicates the reliability of the resistor in terms of failure rate percentage per 1000 hours of service. It is also possible to have a 5 th band that is the temperature coefficient, which indicates the change in resistance of the component as a function of ambient temperature in terms of ppm/K. Band Three – Multiplier: Takes the digits and multiplies them by a value given by this band. The actual multiplier is 10 n, where n is a value that corresponds to the color of the band. In this case, the third band is yellow which corresponds to the number 5. Therefore the multiplier is 10 5 = 10,0000. This calculator will help you identify the value, tolerance and temperature coefficient of a color coded resistor by simply selecting the bands colors. It will also calculate the minimum and maximum values based on the tolerance ratio. This calculator supports resistors with 3, 4, 5, and 6 bands. How to use? For example, if you want to calculate the value of a resistor that will allow a current of 1 ampere to flow through it when a voltage of 100 volts is applied across it, you would use the following formula:

Peek inside the guts of a few carbon-film resistors. Resistance values from top to bottom: 27Ω, 330Ω and a 3.3MΩ. Inside the resistor, a carbon film is wrapped around an insulator. More wraps means a higher resistance. Pretty neat!Since the context usually makes it clear that we're talking about resistor values, it's common short-hand to drop the 'Ω' so that, for example, you can write "39K"* instead of "39KΩ". It’s easiest to learn four band resistors first. Once you learn the four band system, it is very easy to understand five and six band resistor color codes. The Four Band 100k Ohm Resistor Power is the rate at which energy is transformed into something else. It's calculated by multiplying the voltage difference across two points by the current running between them, and is measured in units of a watt (W). Light bulbs, for example, power electricity into light. But a resistor can only turn electrical energy running through it into heat. Heat isn't usually a nice playmate with electronics; too much heat leads to smoke, sparks, and fire! Resistor color codes consist of digits followed by a multiplier and a tolerance value. Four band resistors have two bands for digits, while five band resistors have three bands for digits. Six band resistors also add a temperature coefficient. The power rating of a resistor is one of the more hidden values. Nevertheless it can be important, and it's a topic that'll come up when selecting a resistor type.

The electrical resistance of a resistor is measured in ohms. The symbol for an ohm is the greek capital-omega: Ω. The (somewhat roundabout) definition of 1Ω is the resistance between two points where 1 volt (1V) of applied potential energy will push 1 ampere (1A) of current. It was a hell of a job to find the right values to reach a wide range of values, fairly equaly spread.As SI units go, larger or smaller values of ohms can be matched with a prefix like kilo-, mega-, or giga-, to make large values easier to read. It's very common to see resistors in the kilohm (kΩ) and megaohm (MΩ) range (much less common to see miliohm (mΩ) resistors). For example, a 4,700Ω resistor is equivalent to a 4.7kΩ resistor, and a 5,600,000Ω resistor can be written as 5,600kΩ or (more commonly as) 5.6MΩ. Schematic symbol On the most precise of resistors, a 6 th band may be present. The first three bands would be the significant figure bands, the 4 th the multiplier, the 5 th the tolerance, and the 6 th could be either reliability or temperature coefficient. There are also other possible variations, but these are some of the more common configurations. The third band is the multiplier. Multiply the value designated by the first two bands with the multiplier to find the full value of the resistor. A 100K resistor is a type of resistor with a value of 100,000 ohms. Resistors are passive electronic components that are used to resist the flow of electrical current in a circuit. They are commonly used to limit the current in a circuit, to divide the voltage in a circuit, to provide a reference voltage, or to create a voltage drop in a circuit. The value of a resistor is expressed in ohms, and it determines the amount of resistance that the resistor offers to the flow of electrical current. The higher the value of the resistor, the more resistance it offers, and the lower the current that will flow through it.

The 100k Ohm resistor is a common resistor in electronics. Its popularity makes it perfect for learning the resistor color code. It’s also useful to be able to readily recognize them in projects, along with other common resistors. Since it is a four-band resistor, the first two bands (violet and green) will indicate the significant digits which are, according to the table above; 75. The final band indicates the tolerance of the resistor. The tolerance explains how much more or less the actual resistance of the resistor can be compared to what its nominal value is. No resistor is made to perfection, and different manufacturing processes will result in better or worse tolerances. For example, a 1kΩ resistor with 5% tolerance could actually be anywhere between 0.95kΩ and 1.05kΩ.They are read exactly the same way as five band resistors, except that the (additional) last band tells us the temperature coefficient. Color Tolerance is the percentage of error between the actual measured resistive value and the stated value. This is due to the manufacturing process and it is expressed as a percentage of its preferred value Calculating I can devide every value by 10, keeping the balance the same, while having the right pulldown value. Six band resistors are basically five band resistors with an additional band at the end that indicates the temperature coefficient. This indicates the expected change in resistor value as the temperature changes in degrees Celsius. Generally these temperature coefficient values are extremely small, in the ppm range. Decoding Resistor Color Bands In a four-band resistor, which is the most common, the first two bands also represent the first two significant digits. The third band represents the multiplier. The fourth band represents the tolerance.



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