The SWPA5040S4R7NT is a shielded wire-wound SMD power inductor manufactured by Sunlord Electronics. Belonging to the SWPA5040S series, this component features a nominal inductance of 4.7μH, an inductance tolerance of ±30%, and a rated current of 3.0A. It is designed for efficient energy storage and power management applications in various electronic devices.
The inductor utilizes a ferrite core and shielded drum-core construction, helping reduce magnetic flux leakage and electromagnetic interference (EMI). Its wire-wound structure provides reliable inductance characteristics and supports stable performance in switching power supply and DC-DC conversion circuits.
The SWPA5040S4R7NT features a maximum DC resistance of 39mΩ and a typical DC resistance of 30mΩ, helping minimize conduction losses during operation. Its maximum saturation current is 3.5A, with a typical value of 3.9A. The rated heat current is 3.0A, making it suitable for power circuits requiring reliable current handling capabilities.
This component has a minimum self-resonant frequency of 28MHz and an inductance test frequency of 100kHz. Its electrical characteristics make it suitable for DC-DC converters, switching power supplies, voltage regulation circuits, and other power management applications.
The SWPA5040S4R7NT features a compact 5.0 × 5.0 × 4.0mm surface-mount package, making it suitable for space-efficient PCB layouts and automated surface-mount technology (SMT) assembly. Its magnetic shielding design helps improve electromagnetic compatibility in densely populated electronic circuits.
The inductor operates across a temperature range of -40°C to +125°C, including self-heating, supporting reliable performance under various operating conditions.
The Sunlord SWPA5040S4R7NT is suitable for consumer electronics, communication equipment, computer peripherals, power management systems, switching regulators, and other electronic devices requiring compact and reliable power inductors.
The component is supplied in tape-and-reel packaging, with a standard quantity of 1,500 pieces per reel, supporting automated pick-and-place assembly and high-volume electronic manufacturing.
Key Features:
- Manufacturer: Sunlord Electronics
- Part Number: SWPA5040S4R7NT
- Product Series: SWPA5040S Series
- Product Type: Shielded Wire-Wound SMD Power Inductor
- Inductance: 4.7μH
- Inductance Tolerance: ±30%
- Rated Current: 3.0A
- Maximum Saturation Current: 3.5A
- Typical Saturation Current: 3.9A
- Maximum DC Resistance: 39mΩ
- Typical DC Resistance: 30mΩ
- Minimum Self-Resonant Frequency: 28MHz
- Inductance Test Frequency: 100kHz
- Core Material: Ferrite
- Construction: Wire Wound
- Shielding: Shielded Drum Core
- Package Dimensions: 5.0 × 5.0 × 4.0mm
- Operating Temperature: -40°C to +125°C
- Mounting Type: Surface Mount (SMD/SMT)
- Packaging: Tape and Reel
- Standard Reel Quantity: 1,500 Pieces
- Environmental Compliance: RoHS Compliant
Typical Applications:
- DC-DC converters
- Switching power supplies
- Power management circuits
- Voltage regulation circuits
- DC power filtering
- Consumer electronics
- Communication equipment
- Computer and peripheral devices
- Industrial electronic equipment
- Power conversion circuits
- General-purpose PCB applications
The Sunlord SWPA5040S4R7NT combines 4.7μH inductance, 3A rated current, and shielded wire-wound construction in a compact 5.0 × 5.0mm SMD package. Its ferrite core, low DC resistance, and reliable electrical characteristics make it a practical choice for electronic manufacturers, hardware engineers, and procurement teams seeking dependable power inductors for modern electronic applications.
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