ELL-SFG471MA Equivalent & Substitute Parts

Part Overview

The ELL-SFG471MA is a 470 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 110 mA continuous current with a DC resistance of 12.3Ohm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates at a test frequency of 100 kHz and is packaged in a nonstandard surface mount configuration measuring 4.00mm × 4.00mm × 1.20mm (max height).

Substiute Parts

ELL-SFG471MA

Panasonic Electronic ComponentsIn Stock: 703ELL-SFG471MA Datasheet

Current PartRFQ

VLCF4028T-471MR14-2

TDK CorporationIn Stock: 9304VLCF4028T-471MR14-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELL-SFG471MA is determined by the following critical parameters:

• Inductance Value: 470 µH ±20% tolerance
• Current Rating: Minimum 110 mA continuous current capability
• Saturation Current: Minimum 100 mA
• DC Resistance: Lower DCR values improve efficiency and reduce power dissipation
• Shielding: Shielded construction required for EMI containment
• Mounting Type: Surface mount configuration
• Package Footprint: 4.00mm × 4.00mm base dimensions
• Test Frequency: 100 kHz measurement standard

The VLCF4028T-471MR14-2 from TDK Corporation meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The VLCF4028T-471MR14-2 is a direct functional substitute for the obsolete ELL-SFG471MA. The TDK component provides superior electrical performance with 27% higher current rating (140 mA vs. 110 mA) and significantly reduced DC resistance (4.58Ohm vs. 12.3Ohm), resulting in lower power dissipation and improved thermal characteristics.

The substitute part maintains identical inductance value and tolerance, matching footprint dimensions, and shielded construction. The increased height (2.80mm vs. 1.20mm) must be verified against PCB layout constraints. The VLCF4028T-471MR14-2 is actively manufactured and carries ROHS3 compliance certification, providing long-term supply assurance and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the VLCF4028T-471MR14-2 directly replace the ELL-SFG471MA in existing designs?

A: Yes, provided that the increased component height of 2.80mm (versus 1.20mm) does not conflict with PCB layout, clearance requirements, or adjacent component placement. The identical footprint dimensions (4.00mm × 4.00mm) and inductance value ensure electrical compatibility.

Q: What is the impact of the lower DC resistance in the substitute part?

A: The VLCF4028T-471MR14-2 exhibits 4.58Ohm maximum DC resistance compared to 12.3Ohm in the original part. This reduction decreases resistive losses and power dissipation, improving circuit efficiency and reducing thermal stress on the component.

Q: Are there any compliance or supply chain advantages to using the substitute?

A: The VLCF4028T-471MR14-2 is actively manufactured by TDK Corporation with ROHS3 compliance certification and unlimited moisture sensitivity rating. The original ELL-SFG471MA is obsolete, making the substitute the recommended choice for new production and long-term availability.

Q: How do the current ratings compare?

A: The substitute part supports 140 mA continuous current with 140 mA saturation current, exceeding the original part's 110 mA rating and 100 mA saturation specification. This provides additional design margin for current-limited applications.

Q: Is the operating temperature range a consideration for substitution?

A: The substitute part specifies an operating temperature range of -40°C to 105°C. The original part does not provide temperature specifications. Verify that this range meets application requirements before implementation.