LQH2MCN4R7M02
Unshielded wirewound chip inductors, 4.7uH, for compact electronic circuits
Manufacturer： murata
series introduction
# Introduction to the LQH2MCN4R7M02 Product Series
## 1. Overview
The LQH2MCN4R7M02 belongs to a specialized series of electronic components, specifically inductors. Inductors are fundamental passive components in electronic circuits, playing crucial roles in various applications such as power management, signal filtering, and impedance matching. This particular product series is designed to meet the demanding requirements of modern electronic devices, offering high - performance and reliable operation.
## 2. Key Specifications
### 2.1 Inductance Value
The "4R7" in the model number indicates an inductance value of 4.7 μH (microhenries). Inductance is a measure of the inductor's ability to store energy in a magnetic field when an electric current flows through it. A 4.7 μH inductance is suitable for a wide range of applications, including DC - DC converters, where it helps in energy storage and transfer during the switching process.
### 2.2 Tolerance
The "M" in the model number represents a tolerance of ±20%. This means that the actual inductance value of the LQH2MCN4R7M02 can vary within 20% of the nominal 4.7 μH value. For example, the actual inductance could range from 3.76 μH to 5.64 μH. While a ±20% tolerance might seem relatively large, it is acceptable in many applications where the circuit can tolerate some variation in the inductance value.
### 2.3 Current Rating
The product is designed to handle a certain amount of current. Although the specific current rating is not explicitly given in the model number, it is an important parameter. The current rating determines the maximum amount of current that the inductor can carry without significant degradation of its performance or overheating. In power - related applications, such as voltage regulators, the inductor must be able to handle the load current without saturating. Saturation occurs when the magnetic core of the inductor can no longer store additional magnetic energy, leading to a decrease in inductance and potentially causing the circuit to malfunction.
### 2.4 DC Resistance (DCR)
The DC resistance of the inductor is another critical specification. A low DCR is desirable as it reduces power losses in the form of heat. When current flows through the inductor, the resistance causes a voltage drop according to Ohm's law (V = IR), and the power dissipated as heat is given by P = I²R. A lower DCR means less power is wasted as heat, improving the overall efficiency of the circuit.
## 3. Physical Characteristics
### 3.1 Package Size
The LQH2MCN4R7M02 comes in a specific package size. The package is designed to be compatible with standard printed circuit board (PCB) manufacturing processes, such as surface - mount technology (SMT). SMT components are widely used in modern electronics due to their small size, high - density mounting capabilities, and ease of automated assembly. The compact package size allows for more efficient use of PCB space, which is especially important in portable electronic devices where space is at a premium.
### 3.2 Construction
The inductor is typically constructed with a magnetic core and a coil of wire. The choice of magnetic core material affects the inductor's performance characteristics, such as inductance, saturation current, and temperature stability. The coil is wound around the core to create the magnetic field. The construction is designed to ensure mechanical stability and electrical reliability, even under harsh operating conditions.
## 4. Applications
### 4.1 Power Management
In power supply circuits, the LQH2MCN4R7M02 can be used
Images for reference
LQH2M_02 Series
LQH2MC_02 Series Front
LQH2MC_02 Series End