The SWPA5040S1R0NT is a shielded wire-wound SMD power inductor manufactured by Sunlord Electronics. Belonging to the SWPA5040S series, this component features a nominal inductance of 1.0μH, an inductance tolerance of ±30%, and a maximum heat rating current of 4.9A. It is designed for efficient energy storage and power management applications in various electronic devices.
The inductor utilizes a nickel-zinc ferrite core and magnetic-resin shielded construction, helping reduce magnetic flux leakage and electromagnetic interference (EMI). Its closed magnetic circuit design provides improved electromagnetic compatibility, while the magnetic shielding structure helps reduce buzzing noise and interference in electronic circuits.
The SWPA5040S1R0NT features a maximum DC resistance of 16mΩ and a typical DC resistance of 12mΩ, helping minimize power losses during operation. Its maximum saturation current is 7.35A, with a typical value of 8.20A. The maximum heat rating current (Irms) is 4.9A, with a typical value of 5.1A, supporting efficient power conversion and current handling.
This component has a minimum self-resonant frequency of 117MHz and an inductance test frequency of 100kHz at 1V. Its electrical characteristics make it suitable for DC-DC converters, switching power supplies, voltage regulation circuits, and other power management applications.
The SWPA5040S1R0NT 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 metallized ferrite core construction also provides improved mechanical durability and shock resistance.
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 SWPA5040S1R0NT is suitable for smartphones, smart TVs, set-top boxes, notebook computers, telecommunications equipment, VR and AR devices, and other electronic products 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: SWPA5040S1R0NT
- Product Series: SWPA5040S Series
- Product Type: Shielded Wire-Wound SMD Power Inductor
- Inductance: 1.0μH
- Inductance Tolerance: ±30%
- Maximum Heat Rating Current (Irms): 4.9A
- Typical Heat Rating Current: 5.1A
- Maximum Saturation Current (Isat): 7.35A
- Typical Saturation Current: 8.20A
- Maximum DC Resistance: 16mΩ
- Typical DC Resistance: 12mΩ
- Minimum Self-Resonant Frequency: 117MHz
- Inductance Test Frequency: 100kHz / 1V
- Core Material: Ni-Zn Ferrite
- Construction: Wire Wound
- Shielding: Magnetic-Resin Shielded Construction
- 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
- Smartphones and smart TVs
- Set-top boxes
- Notebook computers
- Telecommunications equipment
- VR and AR electronic devices
- Consumer electronics
- Power conversion circuits
- General-purpose electronic equipment
The Sunlord SWPA5040S1R0NT combines 1.0μH inductance, a 4.9A maximum heat rating current, and shielded wire-wound construction in a compact 5.0 × 5.0mm SMD package. Its ferrite core, low DC resistance, and closed magnetic circuit design make it a practical solution for electronic manufacturers, hardware engineers, and procurement teams seeking reliable power inductors for modern power conversion and electronic applications.






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