SDR0805-3R3ML
Surface-mount wirewound power inductors with 3.3uH inductance
Manufacturer： bourns
series introduction
# Introduction to the SDR0805 - 3R3ML Product Series
## 1. Overview
The SDR0805 - 3R3ML product series belongs to the realm of surface - mount power inductors. These inductors are engineered to meet the diverse and demanding requirements of modern electronic circuits, offering a reliable and efficient solution for a wide range of applications. The "SDR" likely represents a specific product line designation by the manufacturer, while "0805" indicates the physical size of the inductor according to the industry - standard surface - mount package dimensions. The "3R3" denotes an inductance value of 3.3 μH (microhenries), and "ML" may signify certain material or performance characteristics specific to the product series.
## 2. Physical Characteristics
### 2.1 Dimensions
The 0805 package size is a well - established standard in the electronics industry. It typically has a length of approximately 2.03 mm, a width of about 1.27 mm, and a relatively low profile height, which makes it suitable for applications where space is at a premium. This compact size allows for high - density circuit board designs, enabling the integration of multiple components in a limited area.
### 2.2 Construction
The SDR0805 - 3R3ML inductors are constructed using high - quality materials. The core material is carefully selected to provide optimal magnetic properties, such as high magnetic permeability and low core losses. The winding is made of a suitable conductive material, usually copper, which offers low resistance and high conductivity. The combination of these materials ensures stable performance and long - term reliability.
## 3. Electrical Characteristics
### 3.1 Inductance
With an inductance value of 3.3 μH, these inductors are capable of storing and releasing magnetic energy in an electrical circuit. Inductance is a crucial parameter in applications such as power supplies, where it helps in filtering out unwanted electrical noise and ripple. In switching power supplies, the inductor stores energy during the on - time of the switching transistor and releases it during the off - time, smoothing the output voltage.
### 3.2 DC Resistance (DCR)
The DC resistance of the SDR0805 - 3R3ML inductors is relatively low. A low DCR is desirable as it minimizes power losses in the form of heat generation. This is especially important in high - current applications, where excessive heat can degrade the performance of the inductor and other components on the circuit board. The low DCR also helps to improve the overall efficiency of the circuit.
### 3.3 Saturation Current
The saturation current is the maximum current that the inductor can handle before its inductance value starts to decrease significantly. The SDR0805 - 3R3ML series is designed to have a relatively high saturation current rating. This makes it suitable for applications that require the handling of large currents, such as power amplifiers and high - power DC - DC converters.
## 4. Performance Advantages
### 4.1 High Efficiency
Due to its low DCR and optimized magnetic core design, the SDR0805 - 3R3ML series offers high efficiency. In power supply applications, this means that less power is wasted as heat, resulting in lower energy consumption and longer battery life in portable devices.
### 4.2 Low Noise
The inductors are designed to minimize electromagnetic interference (EMI). The high - quality core material and proper winding techniques help to reduce the generation of magnetic fields that can interfere with other components on the circuit board. This makes the SDR0805 - 3R3ML series suitable for use in sensitive electronic equipment, such as audio and
Images for reference
SDR0805 Series
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