ELL-8TP471MB Equivalent & Substitute Parts

Part Overview

The ELL-8TP471MB is a 470 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, designed for surface mount applications with a current rating of 480 mA and 1Ohm 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 across the industrial temperature range of -40°C to 105°C and is RoHS3 compliant with MSL Level 1 rating.

Substiute Parts

ELL-8TP471MB

Panasonic Electronic ComponentsIn Stock: 754ELL-8TP471MB Datasheet

Current PartRFQ

74404086471

Würth ElektronikIn Stock: 1304874404086471 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELL-8TP471MB is determined by the following critical parameters:

• Inductance Value: 470 µH (exact match required)
• Inductance Tolerance: ±20% (must be equivalent or tighter)
• Current Rating: Minimum 480 mA (substitute must meet or exceed)
• DC Resistance: Nominal 1 Ohm (substitute DCR must be compatible with circuit design)
• Mounting Type: Surface Mount (8.00mm x 8.00mm footprint)
• Shielding: Shielded or semi-shielded construction acceptable for EMI-sensitive applications
• Operating Temperature Range: Minimum -40°C ~ 105°C coverage
• Compliance: RoHS3 and MSL Level 1 required

The Würth Elektronik 74404086471 qualifies as a substitute based on matching inductance, tolerance, footprint dimensions, and compliance requirements, while offering improved current handling and saturation characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 74404086471 from Würth Elektronik is an active production substitute for the obsolete ELL-8TP471MB. Both components meet RoHS3 compliance and MSL Level 1 requirements. The Würth part offers the following advantages:

• Active Product Status: Ensures long-term availability and supply chain continuity
• Higher Current Rating: 650 mA rated current versus 480 mA, providing design margin
• Improved Saturation Performance: 1.08 A Isat versus 400 mA, reducing core saturation risk
• Extended Temperature Range: -40°C ~ 125°C versus -40°C ~ 105°C
• AEC-Q200 Certification: Automotive-grade qualification for reliability-critical applications

Height Consideration: The substitute part measures 6.50mm seated height versus 5.00mm for the original. PCB layout clearance must be verified before implementation.

DCR Variance: The substitute exhibits 1.2 Ohm DCR versus 1 Ohm. Circuit designs sensitive to resistive losses require thermal and efficiency analysis to confirm acceptability.

Frequently Asked Questions (FAQ)

Q: Can the 74404086471 be used as a direct replacement for the ELL-8TP471MB?

A: Yes, for applications where the 6.50mm height and 1.2 Ohm DCR are compatible with PCB layout and circuit performance requirements. The inductance value, tolerance, footprint, and compliance specifications are equivalent.

Q: What is the impact of the 0.2 Ohm DCR increase?

A: The 74404086471 exhibits 20% higher DC resistance (1.2 Ohm vs. 1 Ohm). Power dissipation increases proportionally with current squared. For a 480 mA load, dissipation increases from 0.23 W to 0.28 W. Thermal analysis is required for temperature-sensitive applications.

Q: Does the height difference affect PCB compatibility?

A: The substitute is 1.50mm taller (6.50mm vs. 5.00mm). Verify clearance above the component location for solder reflow equipment, conformal coating processes, and mechanical assembly constraints.

Q: Are both parts suitable for automotive applications?

A: The 74404086471 carries AEC-Q200 certification for automotive use. The ELL-8TP471MB does not specify automotive qualification. For automotive designs, the Würth part is the preferred choice.

Q: What is the difference between shielded and semi-shielded construction?

A: Shielded inductors (ELL-8TP471MB) provide greater EMI containment. Semi-shielded inductors (74404086471) offer reduced shielding but lower profile and cost. Selection depends on EMI requirements and board layout constraints.

Q: Are both parts MSL Level 1?

A: Yes. Both components have MSL Level 1 rating, indicating unlimited shelf life and no moisture bake-out requirement before soldering.