BLM18HG102SN1
Compact SMD ferrite beads for EMI suppression in electronic circuits
Manufacturer： murata
series introduction
# Introduction to the BLM18HG102SN1 Product Series
## 1. Overview
The BLM18HG102SN1 belongs to a specialized product series that plays a crucial role in the field of electronic components. These components are designed to meet the diverse needs of modern electronic circuits, offering high - performance solutions for various applications.
## 2. Product Specifications
### Physical Characteristics
- **Size**: The BLM18HG102SN1 has a compact form factor, which is ideal for use in space - constrained electronic devices. Its small size allows for easy integration into printed circuit boards (PCBs) without taking up excessive space. This makes it suitable for applications such as mobile phones, tablets, and other portable electronic devices where miniaturization is a key requirement.
- **Package Type**: It comes in a specific package that provides excellent mechanical protection and electrical isolation. The package is designed to ensure reliable performance even in harsh environmental conditions, such as high humidity and temperature variations.
### Electrical Characteristics
- **Inductance**: The component has an inductance value of 1000 nH (102 represents 10 x 10² nH). Inductance is a measure of the ability of an inductor to store energy in a magnetic field. This specific inductance value makes the BLM18HG102SN1 suitable for applications where filtering and impedance matching are required.
- **DC Resistance (DCR)**: It has a relatively low DC resistance. A low DCR is beneficial as it reduces power losses in the circuit, improving the overall efficiency of the system. This is especially important in battery - powered devices where power consumption needs to be minimized.
- **Rated Current**: The component is rated to handle a certain amount of current. This rating indicates the maximum current that the inductor can carry without overheating or experiencing significant performance degradation. The appropriate rated current ensures the safe and reliable operation of the inductor in the circuit.
## 3. Function and Working Principle
### Filtering Function
One of the primary functions of the BLM18HG102SN1 is to act as a filter in electronic circuits. It can block high - frequency noise while allowing low - frequency signals to pass through. In power supply circuits, for example, it can filter out unwanted high - frequency ripple and noise, providing a clean and stable power supply to other components in the circuit.
### Impedance Matching
The inductor can also be used for impedance matching purposes. In RF (Radio Frequency) circuits, proper impedance matching is essential to ensure maximum power transfer between different components. The BLM18HG102SN1 can be used to adjust the impedance of the circuit, improving the overall performance of the RF system.
### Working Principle
The working principle of the BLM18HG102SN1 is based on the property of inductance. When an alternating current (AC) passes through the inductor, a magnetic field is generated around it. The changing magnetic field induces an electromotive force (EMF) in the inductor, which opposes the change in current. This property allows the inductor to filter out high - frequency signals, as high - frequency currents change more rapidly, resulting in a larger opposing EMF.
## 4. Applications
### Consumer Electronics
- **Mobile Devices**: In smartphones and tablets, the BLM18HG102SN1 can be used in power management circuits to filter out noise from the battery power supply. It can also be used in RF circuits to improve the signal quality and reduce interference.
- **Wearable Devices**: Due to its small size and low power consumption, it is suitable for use in wearable devices such as smartwatches and fitness trackers. It can help in maintaining a stable power
Images for reference
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EMIFIL BLM18x 0603(1608)
BLM18 Series Top
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BLM18(A,B,E,H,P,R) Series Side