0402YD104KAT
Compact 0.1uF ceramic capacitors for SMD applications, 16V, X5R, 10% tolerance
Manufacturer： avx
series introduction
# Introduction to the 0402YD104KAT Product Series
## 1. Overview
The 0402YD104KAT product series belongs to the realm of electronic components, specifically surface - mount capacitors. These components are widely used in various electronic circuits due to their compact size, high performance, and reliability. The "0402" in the product code refers to the industry - standard package size, which is a common and popular choice for modern electronic devices where space is at a premium.
## 2. Package Size (0402)
### Physical Dimensions
The 0402 package has specific physical dimensions. In the metric system, it typically measures approximately 1.0mm x 0.5mm. This small size makes it ideal for use in densely populated printed circuit boards (PCBs), such as those found in mobile phones, tablets, wearables, and other portable electronic devices.
### Mounting Advantages
Surface - mount technology (SMT) is used for the 0402YD104KAT series. SMT allows for automated assembly processes, which are faster and more cost - effective compared to through - hole mounting. The components can be precisely placed on the PCB using pick - and - place machines, and then soldered using reflow soldering techniques. This results in a more reliable and consistent connection, reducing the risk of loose connections or short circuits.
## 3. Capacitance Value (104)
### Capacitance Explanation
The "104" in the product code represents the capacitance value of the capacitor. In the capacitor coding system, the first two digits (10 in this case) are the significant figures, and the third digit (4) is the multiplier. So, the capacitance value is calculated as \(10\times10^{4}\) picofarads (pF). This equates to 100,000 pF or 0.1 microfarads (\(\mu F\)).
### Application Significance
A capacitance of 0.1 \(\mu F\) is a very common value in electronic circuits. It is often used for decoupling purposes. Decoupling capacitors are used to filter out high - frequency noise and voltage fluctuations in power supply lines. They act as a local energy reservoir, providing a stable power source to sensitive components such as integrated circuits (ICs). For example, in a microcontroller circuit, a 0.1 \(\mu F\) decoupling capacitor can prevent voltage spikes from affecting the proper operation of the microcontroller.
## 4. Tolerance (K)
### Tolerance Definition
The "K" in the product code indicates the tolerance of the capacitance value. In the capacitor industry, "K" represents a tolerance of ±10%. This means that the actual capacitance value of the 0402YD104KAT capacitor can vary between 90,000 pF (0.09 \(\mu F\)) and 110,000 pF (0.11 \(\mu F\)).
### Impact on Circuit Design
When designing a circuit, the tolerance of the capacitor needs to be considered. For circuits that are less sensitive to capacitance variations, such as simple power supply filtering circuits, a ±10% tolerance may be acceptable. However, for more precise applications, such as oscillator circuits or filter circuits where the capacitance value directly affects the frequency response, a lower tolerance capacitor may be required.
## 5. Dielectric Material (YD)
### Dielectric Characteristics
The "YD" indicates the type of dielectric material used in the capacitor. Different dielectric materials have different properties, such as dielectric constant, temperature coefficient, and insulation resistance. The YD dielectric is
Images for reference
AT2A_0402
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