SWPA6045S4R7MT: High-Performance 4.7 H Fixed Inductor for Surface Mount Applications

Introduction to SWPA6045S4R7MT Inductor

The SWPA6045S4R7MT is a premium-grade fixed inductor manufactured by Shenzhen Sunlord Electronics Co., Ltd., specifically designed for demanding surface mount technology (SMT) applications. This drum core, wirewound inductor combines exceptional electrical performance with robust mechanical construction, making it an ideal choice for modern electronic devices requiring reliable power management solutions.

Comprehensive Product Overview

Manufacturer Background

Shenzhen Sunlord Electronics Co., Ltd. is a globally recognized leader in passive electronic components manufacturing. With years of expertise in inductor production, Sunlord has established itself as a trusted supplier for automotive, industrial, and consumer electronics applications. The SWPA6045S4R7MT reflects their commitment to quality and innovation in electromagnetic components.

Detailed Technical Specifications

• Inductance Value: 4.7 H ( 20% tolerance)
• Current Handling Capacity: 3.3 A (rated current), 5.5 A (saturation current)
• DC Resistance: 34 m maximum
• Frequency Characteristics: Self-resonant frequency of 24 MHz, tested at 100 kHz
• Thermal Performance: Operating temperature range from -40 C to +125 C
• Physical Dimensions: 6.0mm 6.0mm footprint with 4.5mm height (0.236" 0.236" 0.177")
• Core Material: High-grade ferrite with shielding
• Construction: Drum core with precision wirewound design
• Mounting Style: Surface mount technology (SMT) compatible

Advanced Features and Technical Advantages

Optimized Magnetic Design

The drum core architecture of the SWPA6045S4R7MT provides superior magnetic flux containment compared to traditional inductor designs. This results in:

• Higher inductance stability under varying load conditions
• Reduced electromagnetic interference (EMI)
• Improved quality factor (Q) for better energy efficiency

Enhanced Ferrite Core Performance

The specially formulated ferrite material offers:

• High magnetic permeability for compact size
• Excellent frequency response up to 24 MHz
• Low core losses even at elevated temperatures
• Minimal hysteresis effects for stable operation

Shielding Technology

The integrated magnetic shielding provides:

• Reduced electromagnetic radiation by up to 70% compared to unshielded designs
• Improved circuit performance in dense PCB layouts
• Better immunity to external magnetic interference
• Compliance with stringent EMI/EMC requirements

Thermal Management

The SWPA6045S4R7MT features:

• Optimized thermal dissipation design
• Stable inductance characteristics across the full temperature range
• Derating guidance for high-temperature operation

Application Scenarios

Power Conversion Systems

Ideal for:

• DC-DC buck/boost converters (1-5MHz switching frequency)
• Voltage regulator modules (VRMs)
• POL (point-of-load) converters
• Switched-mode power supplies (SMPS)

Signal Processing Circuits

Excellent performance in:

• RF matching networks
• Impedance matching circuits
• High-frequency filters
• Signal conditioning stages

Automotive Electronics

Reliable operation in:

• ADAS (Advanced Driver Assistance Systems)
• Infotainment power circuits
• LED lighting drivers
• Engine control modules

Design Considerations

PCB Layout Recommendations

• Maintain minimum 1mm clearance from other components
• Use thermal relief patterns for solder pads
• Ensure adequate ground plane for heat dissipation
• Follow manufacturer's recommended solder profile

Performance Comparison

Compared to similar inductors in its class, the SWPA6045S4R7MT offers:

• 20% lower DCR than industry average
• 15% higher saturation current rating
• Better thermal derating characteristics
• More stable inductance over temperature variations

Purchasing Information

The SWPA6045S4R7MT is available through authorized distributors worldwide. Typical lead times range from 4-8 weeks for standard orders. Customized versions with different inductance values or current ratings may be available for volume production requirements.

Conclusion

The SWPA6045S4R7MT represents an optimal balance of performance, size, and reliability for modern electronic designs. Its combination of high current handling, stable inductance characteristics, and effective shielding makes it particularly valuable for power management applications in space-constrained environments. Engineers can leverage its robust design to improve system efficiency while meeting demanding EMI/EMC requirements.

For design support, sample requests, or volume pricing information, please contact Sunlord Electronics or visit their official website. Technical documentation including SPICE models and application notes are available to assist with design implementation.