SHENZHEN GANGXINLI ELECTRONICS CO.,LTD

SHENZHEN GANGXINLI ELECTRONICS CO.,LTD

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2026/4/29

Introduction to MWSA0503S-3R3MT

.Overview of product

The MWSA0503S-3R3MT, produced by Shenzhen Sunlord Electronics Co., Ltd., is a shielded fixed inductor of the MWSA-S series.It adopts drum core and wirewound structure, featuring high current capacity, low DC resistance and compact size, suitable for various electronic equipment power supply scenarios.

 

.Core parameter

Category:Inductors, Coils, Chokes,Fixed Inductors

Mfr:Shenzhen Sunlord Electronics Co., Ltd.

Series:MWSA-S

Packaging:Tape & Reel

Part Status:Active

Type:Drum Core, Wirewound

Material - Core:Alloy Powder

Inductance:3.3 µH

Tolerance:±20%

Current Rating (Amps):5.5 A

Current - Saturation (Isat):6A

Shielding:Shielded

DC Resistance (DCR):38mOhm Max

Operating Temperature:-55°C ~ 125°C

Inductance Frequency - Test:100 kHz

Mounting Type:Surface Mount

Size / Dimension:0.213" L x 0.205" W (5.40mm x 5.20mm)

Height - Seated (Max):0.118" (3.00mm)

 

.Main characteristics

Stable Inductance:It has a fixed inductance of 3.3 µH with a tolerance of ±20%, tested at 100 kHz, ensuring stable inductive performance and meeting the basic working requirements of electronic circuits.

High Current Capacity:With a rated current of 5.5A and a saturation current of 6A, it can withstand large current loads, avoiding inductance attenuation or damage caused by excessive current.

Low DC Resistance:The maximum DC resistance is only 38mOhm, which effectively reduces power loss during current transmission, improving the energy efficiency of the entire circuit system.

Shielded Design:Adopting a shielded structure, it can effectively suppress electromagnetic interference (EMI), prevent the inductor’s magnetic field from affecting other components and avoid external interference to itself.

Compact Size:With a small size of 5.40mm x 5.20mm and a maximum height of 3.00mm, it is a surface-mount inductor, suitable for space-constrained electronic devices.

Durable Structure:Made of alloy powder core and wirewound technology, it has good mechanical stability and heat dissipation performance, extending the service life of the product.

 

.Application field

Industrial PLC Power:Used in the power supply filter circuit of programmable logic controllers (PLCs), it filters out current ripples, ensuring stable power supply for PLC core control modules and input/output interfaces.

Automotive Electronic Modules:Applied in non-safety-critical automotive electronic modules (such as car audio systems), it suppresses electromagnetic interference and stabilizes the current, adapting to the vehicle’s harsh temperature and voltage environment.

Smartphone Chargers:Used in the output filter part of 5V/9V smartphone fast chargers, it reduces current fluctuations, improves charging stability and protects the smartphone battery from damage.

Industrial Servo Drives:Applied in the current filtering circuit of industrial servo drives, it provides stable inductive support, ensuring the smooth operation of servo motors and improving control precision.

LED Lighting Drivers:Used in LED lighting driver circuits, it stabilizes the driving current, reduces light flicker, and improves the service life of LED lamps while ensuring lighting effect.

Portable Power Banks:Applied in the power management circuit of portable power banks, it filters the charging and discharging current, reducing energy loss and ensuring stable power supply for connected devices.

 

.Summary

The MWSA0503S-3R3MT is a high-performance fixed inductor with stable inductance, high current capacity, low power loss and compact size. It is widely used in industrial control, automotive electronics, consumer electronics and other fields, providing reliable inductive solutions for various electronic devices.