C2012X7R1E105K
Compact multilayer ceramic capacitors for SMD applications
Manufacturer： tdk
series introduction
# Introduction to the C2012X7R1E105K Product Series
## 1. Overview
The C2012X7R1E105K product series belongs to the category of multilayer ceramic capacitors (MLCCs). These components are widely used in various electronic circuits due to their excellent electrical properties, compact size, and high reliability. MLCCs are essential passive components that store and release electrical energy, playing a crucial role in filtering, decoupling, and coupling applications.
## 2. Product Naming Convention
Let's break down the product code "C2012X7R1E105K" to understand its key features:
- **C**: This typically indicates that it is a capacitor.
- **2012**: Refers to the physical size of the capacitor, also known as the package size. In the imperial system, 2012 corresponds to a length of 0.20 inches (5.08 mm) and a width of 0.12 inches (3.05 mm). This size is relatively common and offers a good balance between capacitance value and board space utilization.
- **X7R**: Represents the dielectric material used in the capacitor. X7R is a Class II dielectric, which means it has a relatively high dielectric constant and good 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" indicates that the capacitance change over this temperature range is within ±15%.
- **1E**: This is related to the rated voltage of the capacitor. In the EIA standard, the letter "E" corresponds to a rated voltage of 25V.
- **105**: Denotes the capacitance value. The first two digits (10) are the significant figures, and the third digit (5) is the multiplier. So, the capacitance value is calculated as 10 × 10⁵ pF, which is equal to 1 μF.
- **K**: Indicates the tolerance of the capacitance value. A "K" tolerance means that the actual capacitance can vary by ±10% from the nominal value.
## 3. Electrical Characteristics
### Capacitance
The nominal capacitance of the C2012X7R1E105K series is 1 μF with a tolerance of ±10%. This means that the actual capacitance of a capacitor in this series can range from 0.9 μF to 1.1 μF. The relatively high capacitance value makes it suitable for applications where large amounts of charge need to be stored or where significant filtering is required.
### Voltage Rating
With a rated voltage of 25V, these capacitors can safely operate in circuits where the voltage does not exceed this value. It is important to ensure that the operating voltage in the circuit is within the rated voltage of the capacitor to prevent breakdown and ensure long - term reliability.
### Temperature Coefficient
Thanks to the X7R dielectric, the capacitance of the C2012X7R1E105K series remains relatively stable over a wide temperature range from -55°C to +125°C. The capacitance change is limited to ±15% within this temperature range, which is suitable for applications in environments with varying temperatures, such as automotive electronics, industrial control systems, and consumer electronics.
### Equivalent Series Resistance (ESR)
The ESR of these capacitors is relatively low, which is beneficial for applications where low power loss and high - frequency performance are required. A low ESR allows the capacitor to charge and discharge quickly, making it suitable for high - speed
Images for reference
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C Series 0805(2012 Metric) 13
-10.jpg)
C Series 0805(2012 Metric) 10
C SERIES_2012-0805_1.45