P0751.682NL Equivalent & Substitute Parts

Part Overview

The P0751.682NL is a 6.8 µH unshielded wirewound surface mount inductor manufactured by Pulse Electronics, rated for 4.4 A continuous current with a maximum DC resistance of 44 mOhm. This component is classified as Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Substiute Parts

P0751.682NL

Pulse ElectronicsIn Stock: 837P0751.682NL Datasheet

Current PartRFQ

74456068

Würth ElektronikIn Stock: 189574456068 Datasheet

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SDR1005-6R8ML

Bourns Inc.In Stock: 3128SDR1005-6R8ML Datasheet

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UP2B-6R8-R

Eaton - Electronics DivisionIn Stock: 1568UP2B-6R8-R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P0751.682NL is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 6.8 µH (fixed requirement)
• Inductance tolerance: ±20% (fixed requirement)
• Mounting type: Surface Mount (fixed requirement)
• Shielding configuration: Unshielded (fixed requirement)

Secondary Compatibility Parameters:

• Current rating must not fall below the application's minimum required current
• DC resistance must remain within acceptable limits for the circuit design
• Operating temperature range must encompass the application environment
• Saturation current must support transient conditions
• RoHS3 compliance and MSL 1 rating must be maintained

All three substitute parts meet the primary matching parameters. Secondary parameters vary and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

74456068 (Würth Elektronik WE-PD4 Series)

This substitute presents a current rating of 3.8 A, which is 0.6 A below the primary part specification. Selection is appropriate only when circuit design permits operation at reduced current margins. DC resistance of 34 mOhm provides improved performance over the primary part. Operating temperature maximum of 125°C represents a 5°C reduction from the primary specification. All regulatory certifications match the primary part.

SDR1005-6R8ML (Bourns SDR1005 Series)

This substitute presents the lowest current rating at 3.4 A, representing a 1.0 A reduction from the primary specification. DC resistance of 30 mOhm provides the best performance among substitutes. Operating temperature maximum of 125°C matches the Würth offering. Selection requires confirmation that circuit design accommodates the reduced current rating. All regulatory certifications match the primary part.

UP2B-6R8-R (Eaton UNI-PAC™ Series)

This substitute provides the highest current rating at 5.0 A, exceeding the primary part by 0.6 A. DC resistance of 20.2 mOhm provides superior performance. Operating temperature maximum of 85°C represents a significant 45°C reduction from the primary specification. Selection is restricted to applications where the operating environment does not exceed 85°C. All regulatory certifications match the primary part.

Frequently Asked Questions (FAQ)

Q: Can I use the Würth 74456068 if my circuit requires 4.4 A continuous current?

A: The Würth part is rated for 3.8 A continuous current. Use is not recommended for applications requiring the full 4.4 A specification. Verify that your actual circuit current demand is below 3.8 A before selection.

Q: Which substitute offers the best DC resistance performance?

A: The Eaton UP2B-6R8-R provides the lowest DC resistance at 20.2 mOhm maximum, followed by the Bourns SDR1005-6R8ML at 30 mOhm, and the Würth 74456068 at 34 mOhm. Lower DC resistance reduces power dissipation and heat generation.

Q: Are all substitutes compatible with the same PCB footprint?

A: All substitutes are surface mount components with similar but not identical dimensions. Physical dimensions range from 12.70 mm × 10.00 mm (Würth and Bourns) to 13.97 mm × 10.41 mm (Eaton), and heights range from 5.00 mm to 6.00 mm. Verify PCB layout compatibility before assembly.

Q: What is the temperature limitation for the Eaton substitute?

A: The Eaton UP2B-6R8-R operates to a maximum of 85°C, compared to 130°C for the primary part and 125°C for the other substitutes. This part is suitable only for applications where the operating environment remains below 85°C.

Q: Do all parts maintain ROHS3 compliance?

A: Yes. All four parts—the primary P0751.682NL and all three substitutes—are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.

Q: Which substitute has the lowest saturation current?

A: The Eaton UP2B-6R8-R has a saturation current of 3.6 A, the lowest among all options. This may limit transient current handling compared to the primary part (4.6 A saturation).