Würth Elektronik 744373360068 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744373360068 is a 680 nH shielded molded inductor rated for 8 A continuous current with a maximum DC resistance of 12 mOhm. This component operates across the temperature range of -40°C to 125°C and is designed for surface mount applications in the 5030 package footprint. The part is currently in active production status and maintains full RoHS3 compliance. Substitute parts may be required due to inventory constraints, regional availability, or specific application requirements that demand alternative electrical or mechanical characteristics within the allowable parameter range.

Substiute Parts

744373360068

Würth ElektronikIn Stock: 2379744373360068 Datasheet

Current PartRFQ

PA4340.681NLT

Pulse ElectronicsIn Stock: 3220PA4340.681NLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Pulse Electronics PA4340.681NLT qualifies as a direct substitute based on the following critical parameters:

• Inductance Match: Both parts specify 680 nH with ±20% tolerance, ensuring functional equivalence in circuit operation
• DC Resistance Equivalence: Both maintain 12 mOhm maximum DC resistance, preserving thermal and power dissipation characteristics
• Current Rating Compatibility: The substitute part is rated for 8.5 A, which exceeds the main part's 8 A requirement, providing margin for application demands
• Shielding Consistency: Both parts feature shielded construction, maintaining electromagnetic isolation properties
• Temperature Range Alignment: Both operate across -40°C to 125°C, ensuring thermal compatibility in target applications
• Compliance Parity: Both parts are RoHS3 compliant with MSL 1 rating and REACH unaffected status

The primary distinction lies in package dimensions and saturation current specifications, which do not preclude substitution when mechanical fit and saturation margin requirements are satisfied.

Parameter Comparison

Engineering Selection Recommendations

Both parts maintain active product status and full regulatory compliance. The Würth Elektronik 744373360068 provides a 1 A saturation margin above the rated current, while the Pulse Electronics PA4340.681NLT offers a higher continuous current rating of 8.5 A with a 1 A saturation margin below its rated current. Selection between these parts should be based on available inventory, PCB layout constraints related to the dimensional differences (the Pulse part is 0.80mm longer and 0.20mm wider), and application-specific saturation current requirements. Both parts satisfy the electrical and thermal requirements for equivalent circuit performance.

Frequently Asked Questions (FAQ)

Q: Can the Pulse Electronics PA4340.681NLT be used as a direct replacement for the Würth Elektronik 744373360068?

A: Yes, provided that PCB layout accommodates the dimensional differences. The Pulse part measures 6.00mm x 5.40mm compared to the Würth part's 5.20mm x 5.20mm footprint. Both parts maintain identical inductance, tolerance, DC resistance, and operating temperature specifications.

Q: What is the significance of the saturation current difference between these parts?

A: The Würth part has a 15 A saturation rating versus the Pulse part's 14 A rating. Both exceed their respective continuous current ratings (8 A and 8.5 A) by at least 1 A, providing adequate margin for transient current conditions. Application-specific peak current requirements should be evaluated against these saturation limits.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 ratings. The Pulse part includes AEC-Q200 automotive qualification, which the Würth part specification does not explicitly list. This distinction is relevant only for applications requiring automotive-grade component certification.

Q: How do the package dimensions affect substitution?

A: The Pulse Electronics part is larger in length and width but maintains the same 3.00mm maximum height. PCB layout must accommodate the 6.00mm x 5.40mm footprint. If the original design uses the 5.20mm x 5.20mm Würth footprint with minimal clearance, the Pulse part may require layout modification.

Q: Are the inductance frequency test conditions identical?

A: Both parts specify inductance measurement at 100 kHz, ensuring consistent inductance characterization across both components.