FK18X7R1H104K
Leaded multilayer ceramic capacitors for radial electronic applications
Manufacturer： tdk
series introduction
# Introduction to the FK18X7R1H104K Product Series
## 1. Overview
The FK18X7R1H104K product series belongs to the category of ceramic capacitors. These capacitors are essential passive electronic components widely used in various electronic circuits to store and release electrical energy, filter signals, and perform other crucial functions. The specific model designation "FK18X7R1H104K" contains important information about the capacitor's characteristics and specifications, which we will break down in the following sections.
## 2. Model Explanation
- **FK**: This is likely the product series code assigned by the manufacturer. It helps in identifying and differentiating this particular line of capacitors from other product offerings within the company's portfolio.
- **18**: This may represent a specific physical size or package type of the capacitor. Different numbers in this position can indicate variations in dimensions such as length, width, and height, which are important considerations when designing printed circuit boards (PCBs) to ensure proper fit and compatibility.
- **X7R**: This is the dielectric type of the capacitor. X7R is a popular choice for many applications due to its temperature stability. The "X" indicates that the capacitor can operate at a minimum temperature of -55°C, and the "7" means it can handle a maximum temperature of +125°C. The "R" signifies that the capacitance change over this temperature range is within ±15%. This makes X7R capacitors suitable for use in environments where temperature fluctuations are common.
- **1H**: In the capacitor industry, the "1H" typically represents the rated voltage. In this case, "1H" corresponds to a rated voltage of 50V. The rated voltage is the maximum voltage that the capacitor can safely withstand without experiencing breakdown or other reliability issues.
- **104**: This is a common way to express the capacitance value. The first two digits (10) are the significant figures, and the third digit (4) is the multiplier. So, 104 means \(10\times10^{4}\) picofarads (pF). Converting this to microfarads (\(\mu F\)), we get \(10\times10^{4}\text{ pF}= 0.1\mu F\).
- **K**: This indicates the tolerance of the capacitance value. A "K" tolerance means that the actual capacitance of the capacitor can vary by ±10% from the nominal value. So, for a capacitor with a nominal capacitance of \(0.1\mu F\) and a "K" tolerance, the actual capacitance can range from \(0.09\mu F\) to \(0.11\mu F\).
## 3. Electrical Characteristics
- **Capacitance**: As mentioned earlier, the nominal capacitance of the FK18X7R1H104K capacitor is \(0.1\mu F\) with a tolerance of ±10%. This capacitance value is crucial for determining the capacitor's ability to store electrical charge and its performance in different circuit applications.
- **Rated Voltage**: With a rated voltage of 50V, the capacitor can be used in circuits where the voltage does not exceed this value. It is important to ensure that the operating voltage in the circuit is well below the rated voltage to avoid premature failure of the capacitor.
- **Temperature Coefficient**: Thanks to the X7R dielectric, the capacitor has a relatively stable capacitance over a wide temperature range from -55°C to +125°C. The capacitance change is limited to ±15% within this temperature range, which makes it suitable for use in both high - and low - temperature environments.
- **Dielectric Constant**:
Images for reference
FK28 Series
FK14, FK18 Side Series
FK18 Series