CGA2B2X7R1E223K
Compact X7R ceramic capacitors for surface-mount electronic circuits
Manufacturer： tdk
series introduction
# Introduction to the CGA2B2X7R1E223K Product Series
## 1. Overview
The CGA2B2X7R1E223K product series belongs to the category of multilayer ceramic capacitors (MLCCs). These capacitors are essential passive electronic components widely used in various electronic circuits for functions such as energy storage, filtering, coupling, and decoupling. Their compact size, high performance, and reliability make them a popular choice in modern electronic devices.
## 2. Product Naming Convention
Let's break down the product code "CGA2B2X7R1E223K" to understand its key specifications:
- **CGA**: This is often a manufacturer - specific prefix that identifies the product line or series within the company's capacitor portfolio.
- **2B**: Usually represents the case size of the capacitor. Different case sizes are designed to meet different space requirements in circuit boards. A smaller case size is suitable for applications where space is limited, while a larger case size may offer better electrical performance or higher capacitance values.
- **2**: This digit might be related to the dielectric thickness or other internal structural characteristics of the capacitor.
- **X7R**: It indicates the dielectric type. X7R is a popular dielectric material for MLCCs. It has a temperature coefficient of capacitance that is relatively stable over a wide temperature range (-55°C to +125°C). The capacitance change within this temperature range is typically within ±15%, which makes it suitable for applications where the operating temperature may vary.
- **1E**: This part of the code is related to the rated voltage of the capacitor. In the standard capacitor coding system, "1E" corresponds to a rated voltage of 25V.
- **223**: This is the capacitance value code. Using the standard three - digit coding system for capacitors, the first two digits (22) are the significant figures, and the third digit (3) is the multiplier. So, the capacitance value is \(22\times10^{3}\) pF, which is equal to 22 nF.
- **K**: It represents the tolerance of the capacitance value. A "K" tolerance means that the actual capacitance value can deviate from the nominal value by ±10%.
## 3. Electrical Characteristics
### Capacitance
The nominal capacitance of the CGA2B2X7R1E223K series is 22 nF. However, due to the ±10% tolerance, the actual capacitance value can range from 19.8 nF to 24.2 nF. This capacitance value is crucial for applications such as filtering, where the capacitor is used to block or pass certain frequencies based on its impedance, which is inversely proportional to the capacitance and the frequency of the signal.
### Voltage Rating
With a rated voltage of 25V, these capacitors can safely operate in circuits where the maximum voltage across them does not exceed this value. Exceeding the rated voltage can lead to dielectric breakdown, which may cause the capacitor to fail and potentially damage other components in the circuit.
### Temperature Coefficient
Thanks to the X7R dielectric, the capacitance of the CGA2B2X7R1E223K series remains relatively stable over a wide temperature range. This stability is important in applications where the temperature can vary significantly, such as automotive electronics, industrial control systems, and outdoor - used electronic devices.
### Equivalent Series Resistance (ESR)
The ESR of the CGA2B2X7R1E223K series is relatively low. A low ESR is beneficial in applications such as power supply filtering, where it helps to reduce power losses and improve the efficiency of the
Images for reference
CGA2B Series-0402
X7R-0402 Epoxy Series
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