Würth Elektronik 7447786006 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7447786006 is a 6.8 µH shielded drum core wirewound inductor rated for 2.5 A continuous current with a maximum DC resistance of 75 mOhm. This component is designed for surface mount applications requiring stable inductance performance across a wide operating temperature range of -40°C to 125°C. The part is ROHS3 compliant and carries AEC-Q200 automotive qualification. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

7447786006

Würth ElektronikIn Stock: 15267447786006 Datasheet

Current PartRFQ

P1166.682NLT

Pulse ElectronicsIn Stock: 2080P1166.682NLT Datasheet

MFR RecommendedRFQ

SRR0604-6R8ML

Bourns Inc.In Stock: 3183SRR0604-6R8ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7447786006 are qualified based on the following electrical and mechanical criteria:

• Inductance Value: Exact match at 6.8 µH
• Inductance Tolerance: Acceptable range within ±25% specification
• Current Rating: Minimum 2.1 A to maintain design margin
• DC Resistance: Maximum 75 mOhm to ensure thermal performance
• Shielding: Shielded construction required
• Mounting Type: Surface mount configuration
• Operating Temperature: Minimum -40°C to 125°C coverage
• Compliance: ROHS3 compliant status

Two substitute parts meet these criteria: Pulse Electronics P1166.682NLT and Bourns Inc. SRR0604-6R8ML. Both maintain the core inductance specification and shielded construction while operating within the required temperature range.

Parameter Comparison

Engineering Selection Recommendations

Würth Elektronik 7447786006 remains the primary specification when AEC-Q200 automotive qualification is required. This part carries explicit automotive-grade certification and is actively produced.

Pulse Electronics P1166.682NLT qualifies as a substitute when current requirements can be met with 2.1 A rating and lower DC resistance (40 mOhm) is beneficial for thermal management. This part extends the operating temperature range to 130°C and maintains ROHS3 compliance. The ±30% inductance tolerance is within acceptable substitution parameters.

Bourns Inc. SRR0604-6R8ML qualifies as a substitute when the 1.6 A current rating is sufficient for the application. This part offers the tightest inductance tolerance at ±20% and maintains ferrite core construction matching the original specification. DC resistance at 70 mOhm is within acceptable limits. ROHS3 compliance is maintained.

Selection between substitutes depends on application current requirements and thermal performance priorities. No substitute carries explicit AEC-Q200 certification; applications requiring automotive qualification should retain the original Würth Elektronik part.

Frequently Asked Questions (FAQ)

Q: Can P1166.682NLT replace 7447786006 in all applications?

A: P1166.682NLT is electrically compatible when circuit current demand does not exceed 2.1 A. The lower DC resistance (40 mOhm vs. 75 mOhm) provides improved thermal performance. Applications requiring AEC-Q200 certification must use the original part.

Q: What is the impact of different inductance tolerances?

A: The original part specifies ±25% tolerance. P1166.682NLT operates at ±30% and SRR0604-6R8ML at ±20%. All three fall within acceptable substitution parameters for 6.8 µH inductors. Circuit design should account for the specified tolerance range of the selected part.

Q: Are there physical package differences between these parts?

A: Yes. The original 7447786006 measures 6.20mm × 5.90mm × 5.10mm (height). P1166.682NLT measures 7.54mm × 7.54mm × 4.61mm. SRR0604-6R8ML measures 6.50mm × 6.50mm × 4.80mm. PCB layout must accommodate these dimensional variations.

Q: Which substitute offers the best thermal performance?

A: P1166.682NLT provides the lowest DC resistance at 40 mOhm maximum, resulting in the lowest resistive heating. SRR0604-6R8ML at 70 mOhm is comparable to the original specification at 75 mOhm.

Q: Do all parts maintain the same self-resonant frequency?

A: No. The original part operates at 60 MHz self-resonant frequency. P1166.682NLT operates at 38 MHz and SRR0604-6R8ML at 37 MHz. Applications sensitive to high-frequency performance should evaluate this parameter against circuit requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All three parts carry ROHS3 compliance certification and are suitable for applications with environmental compliance requirements.