Würth Elektronik 7447713330 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7447713330 is a 33 µH shielded drum core wirewound inductor rated for 1.35 A continuous current with a maximum DC resistance of 204mOhm. This component is designed for surface mount applications requiring controlled inductance values in compact form factors. The part is active in production and carries AEC-Q200 automotive qualification, making it suitable for demanding industrial and automotive applications. Substitute parts may be required due to inventory constraints, lead time considerations, or application-specific performance requirements such as lower DC resistance or higher current ratings.

Substiute Parts

7447713330

Würth ElektronikIn Stock: 23017447713330 Datasheet

Current PartRFQ

P1170.333NLT

Pulse ElectronicsIn Stock: 2522P1170.333NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Würth Elektronik 7447713330 is determined by the following critical parameters:

• Inductance Value: Must be 33 µH with ±20% tolerance to maintain circuit functionality
• Shielding: Must be shielded to prevent electromagnetic interference in the target application
• Mounting Type: Must be surface mount compatible
• Current Rating: Must support minimum 1.35 A continuous current; higher ratings are acceptable
• DC Resistance: Lower DCR values improve efficiency; maximum 204 mOhm is the baseline specification
• Operating Temperature: Must support -40°C to 125°C minimum range
• Compliance: RoHS3 compliance and MSL 1 rating are required for equivalent substitution

The Pulse Electronics P1170.333NLT meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The Pulse Electronics P1170.333NLT is a direct functional equivalent to the Würth Elektronik 7447713330 for applications requiring a 33 µH shielded surface mount inductor. Both components maintain identical inductance values and tolerance specifications, ensuring circuit performance consistency.

The P1170.333NLT offers performance advantages including a 66% reduction in DC resistance (70 mOhm versus 204 mOhm), enabling lower power dissipation and improved thermal efficiency. The higher current rating of 2.6 A provides additional design margin compared to the 1.35 A rating of the original part.

Both components carry ROHS3 compliance and MSL 1 moisture sensitivity ratings, meeting identical environmental and regulatory requirements. The P1170.333NLT supports an extended operating temperature range to 130°C, providing additional thermal headroom for demanding applications.

Selection between these parts should be based on inventory availability, lead time requirements, and specific application thermal or efficiency constraints.

Frequently Asked Questions (FAQ)

Q: Can the Pulse Electronics P1170.333NLT replace the Würth Elektronik 7447713330 in existing designs?

A: Yes. Both inductors provide 33 µH inductance with ±20% tolerance, shielded construction, and surface mount packaging. The P1170.333NLT is electrically compatible and offers improved DC resistance characteristics.

Q: What is the significance of the lower DC resistance in the P1170.333NLT?

A: Lower DC resistance reduces power dissipation in the inductor coil, resulting in lower operating temperatures and improved circuit efficiency. This is particularly beneficial in high-current or thermally constrained applications.

Q: Are there physical package differences between these parts?

A: Yes. The Würth Elektronik 7447713330 measures 10.00mm x 10.00mm x 3.00mm (height), while the Pulse Electronics P1170.333NLT measures 12.24mm x 12.24mm x 6.00mm (height). PCB layout and clearance verification is required before substitution.

Q: Do both parts meet automotive qualification standards?

A: The Würth Elektronik 7447713330 carries AEC-Q200 automotive qualification. The Pulse Electronics P1170.333NLT does not list AEC-Q200 certification in the provided specifications. Automotive applications requiring AEC-Q200 compliance must use the original Würth part.

Q: What is the difference in self-resonant frequency between these inductors?

A: The Würth Elektronik 7447713330 has a self-resonant frequency of 13 MHz, while the Pulse Electronics P1170.333NLT is rated at 11 MHz. Both values are suitable for standard filtering and energy storage applications in the specified frequency range.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the Würth Elektronik 7447713330 and Pulse Electronics P1170.333NLT are ROHS3 compliant with MSL 1 moisture sensitivity ratings, meeting identical environmental and regulatory requirements.