RK73H1ETTP49R9F
Precision thick film resistors for surface-mount electronic circuits
Manufacturer： koa-speer
series introduction
# Introduction to the RK73H1ETTP49R9F Product Series
## 1. Overview
The RK73H1ETTP49R9F belongs to a high - performance resistor product series. Resistors are fundamental passive electronic components that play a crucial role in a wide range of electronic circuits, and this particular series is designed to meet the demanding requirements of modern electronic applications.
## 2. Product Specifications
### Resistance Value
The "49R9" in the product code indicates a resistance value of 49.9 ohms. This precise resistance value is carefully calibrated during the manufacturing process to ensure accurate performance in electronic circuits. A tolerance of typically ±1% or even better is achievable, which means that the actual resistance of the resistor will deviate from the nominal 49.9 ohms by no more than 1% in most cases. This high - precision characteristic makes it suitable for applications where accurate resistance values are critical, such as in precision measurement circuits and analog signal processing.
### Power Rating
The power rating of the RK73H1ETTP49R9F is an important parameter. It determines the maximum amount of power that the resistor can safely dissipate without overheating or being damaged. Depending on the specific design and package size, the power rating of this series can range from a few hundred milliwatts to several watts. For example, in a common surface - mount package, it might have a power rating of 0.125W or 0.25W. This power rating is crucial in applications where the resistor will be subjected to significant electrical currents, as exceeding the power rating can lead to a decrease in performance or even complete failure of the resistor.
### Temperature Coefficient
The temperature coefficient of resistance (TCR) is another key specification. It describes how the resistance of the resistor changes with temperature. The RK73H1ETTP49R9F series typically has a low TCR, often in the range of ±50 ppm/°C to ±100 ppm/°C. A low TCR means that the resistance value of the resistor remains relatively stable over a wide temperature range. This is essential in applications where the operating temperature can vary significantly, such as in automotive electronics, industrial control systems, and outdoor electronic devices.
### Package Type
The RK73H1ETTP49R9F is usually available in surface - mount packages. Surface - mount technology (SMT) has become the standard in modern electronics manufacturing due to its many advantages, including smaller size, higher component density on printed circuit boards (PCBs), and better automated assembly capabilities. Common SMT package sizes for this series might include 0603, 0805, or 1206, which refer to the physical dimensions of the resistor in inches (e.g., 0603 means 0.06 inches by 0.03 inches). The choice of package size depends on the specific requirements of the application, such as the available PCB space and the current - carrying capacity.
## 3. Electrical Performance
### Frequency Response
The RK73H1ETTP49R9F series offers excellent frequency response characteristics. It can operate effectively over a wide frequency range, from direct current (DC) up to several megahertz or even gigahertz in some cases. This makes it suitable for use in both low - frequency and high - frequency circuits, such as audio amplifiers, radio frequency (RF) communication systems, and high - speed digital circuits.
### Noise Performance
Low noise is a desirable characteristic in many electronic applications, especially in sensitive analog circuits. The RK73H1ETTP49R9F series is designed to have low noise levels. This is achieved through
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