Description
| Parameter | Description | Typical Range |
| Frequency Range | Operating frequency | 1 MHz – 8GHz |
| Insertion Loss | Signal loss through the device | 0.1 – 3.0 dB |
| Return Loss | Port matching performance | ≥ 10 – 25 dB |
| VSWR | Voltage standing wave ratio | 1.1:1 – 2.0:1 |
| Isolation (for splitter / coupler) | Isolation between output ports | 18 – 40 dB |
| Coupling Factor (for directional coupler) | Coupled signal attenuation | 6, 10, 15, 20, 30 dB |
| Directivity (for directional coupler) | Directional transmission performance | 15 – 35 dB |
| Power Rating | RF power handling | 0.5 W – 200 W |
| Impedance | System characteristic impedance | 50 Ω / 75 Ω |
| Operating Temperature | Ambient working temperature | -40°C to +85°C / +125°C |
| Package Type | Mounting style | SMD, microstrip, connectorized |
| Phase Balance (for transformer) | Phase difference between ports | ±1° – ±10° |
| Amplitude Balance (for splitter) | Amplitude imbalance | ±0.1 – ±1.0 dB |
High Current Semi-Shielded Power Inductor Overview
High Current Semi-Shielded Power Inductors are designed for high-current and high-frequency power supply circuits. The semi-shielded structure uses magnetic adhesive material to partially enclose the coil, effectively reducing electromagnetic interference (EMI) while maintaining high efficiency and stable electrical performance.
These inductors are commonly used in DC-DC converters, switching regulators, and power management systems where reliable current handling and compact size are required.
Key Functions
Semi-shielded power inductors play an important role in power management circuits. Their main functions include:
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Storing energy and stabilizing current in switching power supplies
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Reducing electromagnetic interference (EMI) through semi-shielded magnetic structure
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Filtering ripple, electrical noise, and voltage spikes
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Improving efficiency and thermal performance under high-current conditions
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Supporting voltage step-down (buck) and step-up (boost) DC-DC conversion
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Stabilizing power delivery in high-frequency switching circuits
Electrical Characteristics
These inductors are designed to deliver stable electrical performance in demanding power applications.
Typical specifications include:
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Inductance range: 0.1 μH – 100 μH
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Soft saturation current design for stable operation
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Magnetically shielded structure using magnetic glue
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Maximum peak voltage: 25 V
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Operating temperature: -40°C to +125°C
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Low EMI and low ripple noise performance
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Compact SMD package suitable for automated assembly
The semi-shielded design provides an excellent balance between EMI suppression and high current capability.
Typical Applications
High current semi-shielded power inductors are widely used in various power electronic systems.
Computing & Consumer Electronics
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Server motherboards
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GPU and graphics card power modules
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Laptop and notebook adapters
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Set-top boxes and smart TVs
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Fast chargers and high-power power banks
Communication Equipment
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Networking switches and routers
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Base stations and communication equipment
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5G communication modules
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IoT gateway devices
Automotive Electronics
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Automotive infotainment systems
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Automotive ECU and BMS systems
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Automotive lighting systems
Industrial & Power Systems
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Industrial control equipment
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Industrial power supplies
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Motor drive circuits
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Battery-powered industrial tools
Other Electronic Equipment
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High-power LED drivers
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Surveillance cameras
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Medical electronic equipment
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RF power amplifiers
Key Advantages
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High current capability
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Excellent EMI suppression with semi-shielded structure
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Stable inductance under high-frequency switching conditions
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Compact SMD design for space-constrained applications
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High efficiency and reliable thermal performance
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Wide operating temperature range for industrial and automotive environments
Keywords
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