AE3003 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The AE3003 is a 2-line common mode choke manufactured by Pulse Electronics, designed for signal line filtering in surface mount applications. This component features 100 µH inductance at 100 kHz with a 300 mA maximum current rating and 1.5 Ohm DC resistance. The part is AEC-Q200 rated and operates across the temperature range of -40°C to 125°C. As an active product in ROHS3 compliance, equivalent alternatives exist for applications requiring substitution due to inventory constraints, design flexibility, or specific performance requirements within defined electrical and mechanical parameters.

Substiute Parts

AE3003

Pulse ElectronicsIn Stock: 1790AE3003 Datasheet

Current PartRFQ

744220103

Würth ElektronikIn Stock: 6431744220103 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AE3003 is determined by the following critical parameters that must be maintained or exceeded in equivalent components:

Mandatory Matching Parameters:

• Filter Type: Signal Line
• Number of Lines: 2
• Mounting Type: Surface Mount
• Package / Case: Horizontal, 4 PC Pad
• Operating Temperature Range: -40°C to 125°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Performance Parameters (Minimum Requirements):

• Current Rating: Must equal or exceed 300 mA
• DC Resistance: Must equal or be lower than 1.5 Ohm
• Voltage Rating - DC: Must equal or exceed 60 V
• Inductance: Must be suitable for the intended frequency range and filtering application

The Würth Elektronik 744220103 meets these substitution criteria with equivalent mechanical compatibility and enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the AE3003 and 744220103 are active products with ROHS3 compliance and identical operating temperature ranges. The AE3003 is AEC-Q200 rated, providing automotive-grade qualification. The 744220103 offers enhanced electrical performance with higher current rating (350 mA versus 300 mA), lower DC resistance (1.2 Ohm versus 1.5 Ohm), and higher DC voltage rating (80 V versus 60 V).

Physical dimensions differ between the two parts. The AE3003 occupies a smaller footprint (6.50 mm x 4.50 mm x 2.80 mm height), while the 744220103 is larger (9.20 mm x 6.00 mm x 5.30 mm height). Both maintain the same horizontal 4-pad package configuration and surface mount mounting type.

Selection between these parts depends on application-specific requirements regarding inductance value, frequency response, physical space constraints, and current/voltage headroom needs. The AE3003 is suitable for space-constrained designs requiring automotive qualification. The 744220103 is appropriate for applications requiring higher current capacity and voltage margins with larger available board space.

Frequently Asked Questions (FAQ)

Q: Can the 744220103 directly replace the AE3003 in all applications?

A: Direct replacement depends on circuit board layout and inductance requirements. Both parts share identical filter type, line count, package configuration, and operating temperature range. However, the 744220103 has significantly different physical dimensions (larger) and inductance value (10 mH versus 100 µH). Board space availability and circuit inductance specifications must be evaluated before substitution.

Q: What are the key differences in electrical performance?

A: The 744220103 provides superior electrical performance with 350 mA current rating (versus 300 mA), lower DC resistance of 1.2 Ohm (versus 1.5 Ohm), and higher DC voltage rating of 80 V (versus 60 V). The inductance values differ significantly: 100 µH at 100 kHz for the AE3003 and 10 mH at 10 kHz for the 744220103. These differences affect frequency response and filtering characteristics.

Q: Are both parts compliant with environmental and regulatory standards?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control. Both have MSL rating of 1 (Unlimited). The AE3003 carries AEC-Q200 automotive qualification; the 744220103 does not list this certification in the provided specifications.

Q: What packaging formats are available for these parts?

A: Both the AE3003 and 744220103 are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. Both use horizontal 4-pad case configuration for surface mount applications.

Q: How do the physical dimensions affect PCB design?

A: The AE3003 measures 6.50 mm x 4.50 mm with 2.80 mm maximum height, making it suitable for space-constrained applications. The 744220103 measures 9.20 mm x 6.00 mm with 5.30 mm maximum height, requiring approximately 2.1 times more board area and 1.9 times greater height clearance. PCB layout must accommodate these dimensional differences.