BLM03AG100SN1D
Compact ferrite bead EMI filters for noise suppression in electronics
Manufacturer： murata
series introduction
# Introduction to the BLM03AG100SN1D Product Series
## 1. Overview
The BLM03AG100SN1D product series belongs to the category of high - performance electronic components, specifically ferrite bead chip inductors. These components play a crucial role in modern electronic circuits, offering effective solutions for noise suppression and signal integrity improvement. With their compact size and excellent electrical characteristics, they are widely used in a variety of electronic devices.
## 2. Physical Characteristics
### 2.1 Dimensions
The BLM03AG100SN1D series features a miniature size, which is highly beneficial for applications where space is at a premium. The specific dimensions are precisely engineered to fit into tight - packed circuit boards. This compact form factor allows for high - density circuit designs, enabling manufacturers to create smaller and more portable electronic products.
### 2.2 Packaging
The components are typically packaged in tape and reel format. This packaging method is ideal for automated surface - mount technology (SMT) assembly processes. It ensures easy handling during the manufacturing process, reduces the risk of damage to the components, and allows for efficient and high - speed placement on printed circuit boards (PCBs).
## 3. Electrical Characteristics
### 3.1 Impedance
The "100" in the product code indicates the impedance value of the ferrite bead. At a specified frequency (usually around 100 MHz), the BLM03AG100SN1D offers an impedance of approximately 100 ohms. This impedance characteristic is crucial for its noise - suppression function. It helps to attenuate high - frequency noise signals while allowing low - frequency signals to pass through with minimal loss.
### 3.2 DC Resistance (DCR)
The series has a relatively low DC resistance. A low DCR is important because it minimizes power loss in the circuit when direct current is flowing through the ferrite bead. This not only improves the overall efficiency of the electronic device but also reduces heat generation, which can enhance the reliability and lifespan of the components.
### 3.3 Current Rating
The BLM03AG100SN1D is designed to handle a certain amount of direct current. The current rating is carefully specified to ensure that the component can operate safely without overheating or experiencing performance degradation. This makes it suitable for a wide range of applications with different power requirements.
## 4. Noise Suppression Function
### 4.1 High - Frequency Noise Attenuation
In modern electronic systems, high - frequency noise can cause interference and degrade the performance of sensitive components. The BLM03AG100SN1D acts as a filter, effectively suppressing high - frequency noise signals. It does this by converting the electrical energy of the noise into heat through the magnetic losses in the ferrite material. This helps to clean up the power supply lines and signal paths, improving the overall signal quality.
### 4.2 EMI/RFI Suppression
Electromagnetic interference (EMI) and radio - frequency interference (RFI) are common problems in electronic devices. The BLM03AG100SN1D series helps to reduce EMI/RFI emissions by blocking unwanted high - frequency signals from radiating out of the circuit. This is particularly important for devices that need to comply with strict electromagnetic compatibility (EMC) standards, such as mobile phones, laptops, and other consumer electronics.
## 5. Applications
### 5.1 Mobile Devices
In smartphones, tablets, and wearable devices, the BLM03AG100SN1D can be used to suppress noise on power lines, audio lines, and data lines. This helps to improve the audio quality, reduce interference in wireless communication modules, and enhance the overall performance and reliability of the device.
Images for reference
BLM03 Series
BLM03 Series Side 2
BLM03 Series Side 1