RK73B2ATTD472J
Compact thick film resistors for surface-mount electronic circuits
Manufacturer： koa-speer
series introduction
# Introduction to the RK73B2ATTD472J Product Series
## 1. Overview
The RK73B2ATTD472J belongs to a specialized series of electronic components, specifically resistors. Resistors are fundamental building - blocks in electronic circuits, and this particular series offers a unique set of features and performance characteristics that make it suitable for a wide range of applications.
## 2. Product Naming Convention
Let's break down the product code "RK73B2ATTD472J" to understand its key specifications:
- **RK73**: This is likely the base model or series identifier of the resistor family, which indicates a certain set of design and manufacturing standards specific to this product line.
- **B2**: It may represent a particular sub - series or a set of related features within the RK73 family, such as a specific package type or performance grade.
- **ATT**: This could be a code for additional characteristics like temperature coefficient, tolerance class, or a special manufacturing process.
- **D**: It might denote a specific package size or form factor of the resistor.
- **472**: This is the resistance value code. In the resistor coding system, the first two digits are significant figures, and the third digit is the multiplier. So, for "472", the significant figures are 47, and the multiplier is 10². Thus, the resistance value is \(47\times10^{2}\Omega=4700\Omega = 4.7k\Omega\).
- **J**: This indicates the tolerance of the resistor. The letter "J" represents a tolerance of ±5%.
## 3. Electrical Characteristics
### Resistance Value
As determined from the naming convention, the nominal resistance value of the RK73B2ATTD472J is \(4.7k\Omega\). This value is crucial in determining the current - voltage relationship in a circuit according to Ohm's law (\(V = IR\)). In a circuit, it can be used to limit current, divide voltage, or set the gain of an amplifier.
### Tolerance
With a tolerance of ±5%, the actual resistance value of the resistor can vary between \(4.7k\Omega\times(1 - 0.05)=4465\Omega\) and \(4.7k\Omega\times(1 + 0.05)=4935\Omega\). This level of tolerance is suitable for many general - purpose applications where a high degree of precision is not required.
### Temperature Coefficient
Although not explicitly indicated in the product code, the RK73B2ATTD472J is likely to have a specified temperature coefficient. The temperature coefficient of resistance (TCR) describes how the resistance value changes with temperature. A low TCR means that the resistance value remains relatively stable over a wide temperature range, which is important in applications where the operating temperature may vary.
### Power Rating
The power rating of the resistor determines the maximum amount of power it can dissipate without being damaged. This is calculated using the formula \(P = I^{2}R\) or \(P=\frac{V^{2}}{R}\). The specific power rating of the RK73B2ATTD472J would be provided in the product datasheet and is an important consideration when designing circuits to ensure that the resistor does not overheat.
## 4. Physical Characteristics
### Package Size
The "D" in the product code may refer to a specific package size. The package size affects how the resistor can be mounted on a printed circuit board (PCB). Smaller package sizes are often used in applications where space is limited, such as in mobile devices
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