ELL-ATP470MB Equivalent & Substitute Parts

Part Overview

The ELL-ATP470MB is a 47 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.7 A with 80mOhm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates at 100 kHz inductance test frequency and is housed in a nonstandard, corner terminal surface mount package measuring 10.00mm × 10.00mm × 4.50mm (max height).

Substiute Parts

ELL-ATP470MB

Panasonic Electronic ComponentsIn Stock: 961ELL-ATP470MB Datasheet

Current PartRFQ

7447714470

Würth ElektronikIn Stock: 22797447714470 Datasheet

SimilarRFQ

SRU1038-470Y

Bourns Inc.In Stock: 16580SRU1038-470Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-ATP470MB is determined by the following critical parameters:

• Inductance Value: Must be 47 µH (exact match required)
• Inductance Tolerance: ±20% or tighter acceptable
• Current Rating: Minimum 1.7 A; higher ratings provide design margin
• Saturation Current: Minimum 1.5 A; higher values acceptable
• DC Resistance: Maximum 80 mOhm; lower values preferred for thermal performance
• Shielding: Shielded configuration required
• Mounting Type: Surface mount only
• Package Footprint: 10.00mm × 10.00mm base dimensions; height variation acceptable within assembly constraints
• Regulatory Compliance: ROHS3 compliance required; MSL 1 required

The two identified substitute parts meet these core electrical and mechanical criteria while offering improved product status (both active) and enhanced current handling capabilities.

Parameter Comparison

Engineering Selection Recommendations

7447714470 (Würth Elektronik WE-PD Performance Series)

This substitute offers the highest current rating (2.2 A) and saturation current (2.5 A), providing maximum design margin above the original 1.7 A specification. The part is active in production with AEC-Q200 automotive qualification. Height is 5.00mm (0.50mm taller than original), requiring PCB layout verification. DC resistance of 99 mOhm is 19% higher than the original, introducing minimal thermal impact in most applications. ROHS3 and MSL 1 compliance maintained.

SRU1038-470Y (Bourns Inc. SRU1038 Series)

This substitute maintains the closest physical profile with 4.10mm seated height (0.40mm lower than original), minimizing assembly clearance concerns. Current rating of 1.65 A is within 3% of the original specification, with saturation current of 1.6 A meeting minimum requirements. DC resistance of 121 mOhm represents a 51% increase, which may impact thermal performance in current-limited applications. Inductance tolerance is ±30% (wider than original ±20%), requiring circuit performance validation. Product is active with ROHS3 and MSL 1 compliance.

Both substitutes maintain identical footprint dimensions (10.00mm × 10.00mm) and shielded configuration, supporting direct PCB layout compatibility with minor height adjustments.

Frequently Asked Questions (FAQ)

Q: Can the 7447714470 be used as a direct replacement for the ELL-ATP470MB?

A: The 7447714470 meets all critical electrical parameters (47 µH inductance, shielded, surface mount) with superior current handling (2.2 A vs. 1.7 A). The 0.50mm height increase requires verification that PCB assembly clearances accommodate the taller profile. DC resistance increase from 80 mOhm to 99 mOhm is acceptable for most applications.

Q: What is the impact of higher DC resistance in the SRU1038-470Y?

A: The SRU1038-470Y exhibits 121 mOhm DC resistance compared to the original 80 mOhm. This 51% increase results in proportionally higher resistive losses (I²R heating). In applications where the inductor carries sustained current near the 1.7 A rating, thermal performance should be evaluated. For lower current operation or pulse applications, the impact is negligible.

Q: Are there PCB layout considerations when switching between these parts?

A: All three parts share identical 10.00mm × 10.00mm footprints, supporting direct PCB layout reuse. Height differences (4.10mm to 5.00mm) require clearance verification for components or enclosures positioned above the inductor. The Würth part (5.00mm) is tallest; the Bourns part (4.10mm) is shortest.

Q: Do all substitute parts meet the same regulatory requirements?

A: Yes. All three parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). The Würth 7447714470 carries AEC-Q200 automotive qualification, providing additional reliability assurance for automotive and harsh environment applications.

Q: What is the significance of inductance tolerance differences?

A: The original ELL-ATP470MB specifies ±20% tolerance. The Würth 7447714470 maintains ±20% tolerance, ensuring equivalent circuit performance predictability. The Bourns SRU1038-470Y specifies ±30% tolerance, introducing wider inductance variation. Circuit designs with tight inductance requirements should prioritize the ±20% tolerance parts.