FAQ
The 744773122 is a high-current surface-mount power inductor produced by Würth Elektronik, part of the WE-PD series. Designed for use in DC-DC converters, power supplies, and energy storage applications, it features low DC resistance (DCR), high saturation current, and excellent efficiency, making it suitable for compact and high-performance power management systems.
How Does 744773122 Work?
The 744773122 functions as an energy storage component in switching regulators. During operation, it stores energy in its magnetic field when current flows through it, then releases it when the switch turns off, helping to maintain a steady output voltage and filter out ripple in power circuits.
What Are the Key Specifications and Pin Configuration of 744773122?
Key specifications include:
Inductance: 220 μH
Rated Current: 1.3 A (Isat), 1.1 A (Irms)
DCR: 290 mΩ typical
Size: 7.3 x 7.3 x 4.5 mm (SMD)
As a surface-mount device (SMD), it has no traditional pinout but uses metal terminals for soldering onto PCB pads.
What Are the Pros and Cons of 744773122?
Pros:
High Efficiency: Low DCR reduces energy loss during operation
Compact Form Factor: Suitable for space-limited designs
High Reliability: Robust construction ensures long service life in harsh environments
Excellent Saturation Characteristics: Maintains performance under high current
Cons:
Fixed Inductance: Not tunable once implemented
Current Limitation: Not ideal for very high current applications above 1.5 A
Are There Any Equivalents/Alternatives to 744773122 for Recommendation?
Yes, alternatives include:
Murata's LQH66SN series
TDK's SLF7045 series
Bourns’ SRN7045 series
Each offers different balances of size, current capability, and cost, depending on your application's requirements.
For sourcing or professional advice on choosing the right inductor, Futuretech Components offers comprehensive support and authentic supply channels for a wide range of passive components including the WE-PD series.
