ELL-ATV471M Equivalent & Substitute Parts

Part Overview

The ELL-ATV471M is a 470 µH shielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 470 mA with a DC resistance of 780mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support, design updates, and inventory management. Substitute parts must maintain the core inductance value, current rating compatibility, and shielding characteristics to ensure circuit performance equivalence.

Key Parameters

Parameter	Value
Inductance	470 µH
Inductance Tolerance	±20%
Current Rating	470 mA
DC Resistance (DCR)	780mOhm
Shielding	Shielded
Core Material	Ferrite
Mounting Type	Surface Mount
Package Size	10.00mm x 10.00mm
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-ATV471M is determined by the following criteria:

Primary Matching Parameters:

Inductance value: 470 µH (tolerance range ±20%)
Current rating: minimum 470 mA
Core material: Ferrite
Mounting type: Surface Mount
Package footprint: 10.00mm x 10.00mm nominal

Secondary Compatibility Factors:

Shielding configuration (shielded preferred for EMI-sensitive applications)
DC resistance within acceptable operating limits
RoHS3 compliance and MSL rating
Physical height compatibility (≤4.80mm maximum seated height)

Two substitute parts meet these criteria with varying trade-offs in shielding and DC resistance characteristics.

Parameter Comparison

Parameter	ELL-ATV471M (Main)	SLF10145T-471MR47-PF	SDR1045-471K
Manufacturer	Panasonic Electronic Components	TDK Corporation	Bourns Inc.
Inductance	470 µH	470 µH	470 µH
Inductance Tolerance	±20%	±20%	±10%
Current Rating (Amps)	470 mA	470 mA	520 mA
DC Resistance (DCR)	780mOhm	1.236Ohm Max	2.25Ohm Max
Shielding	Shielded	Shielded	Unshielded
Core Material	Ferrite	Ferrite	Ferrite
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package Size	10.00mm x 10.00mm	10.10mm x 10.10mm	10.00mm x 10.00mm
Height - Seated (Max)	0.177" (4.50mm)	0.189" (4.80mm)	0.189" (4.80mm)
Product Status	Obsolete	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Operating Temperature	Not specified	-40°C ~ 105°C	-40°C ~ 125°C

Engineering Selection Recommendations

SLF10145T-471MR47-PF (TDK Corporation): This substitute provides the closest electrical match to the ELL-ATV471M, maintaining shielded configuration and identical current rating at 470 mA. The inductance tolerance remains ±20%, and RoHS3 compliance is confirmed. However, this part carries a "Not For New Designs" status, limiting its suitability for new product development. DC resistance is elevated at 1.236Ohm maximum compared to the original 780mOhm specification. This option is appropriate for legacy system maintenance and direct replacement scenarios where design changes are not feasible.

SDR1045-471K (Bourns Inc.): This substitute offers the most favorable product status as an active component, ensuring long-term availability and supply chain stability. It provides superior current rating at 520 mA and improved inductance tolerance at ±10%. The unshielded configuration represents a significant departure from the original design, making this option suitable only for applications where EMI shielding is not critical. DC resistance is substantially higher at 2.25Ohm maximum. This part is recommended for new designs or redesigns where shielding requirements can be relaxed and higher current margin is beneficial.

Frequently Asked Questions (FAQ)

Q: Can SDR1045-471K be used as a direct replacement for ELL-ATV471M?

A: SDR1045-471K is electrically compatible in terms of inductance value and current rating. However, the unshielded configuration differs from the original shielded design. Use this substitute only if the application does not require EMI shielding or if circuit layout modifications can accommodate the different shielding characteristics.

Q: What is the impact of higher DC resistance in substitute parts?

A: The ELL-ATV471M specifies 780mOhm DCR. Substitute parts SLF10145T-471MR47-PF (1.236Ohm) and SDR1045-471K (2.25Ohm) exhibit higher resistance. This increases power dissipation and heat generation. Verify that thermal management and power budget remain acceptable for your application before substitution.

Q: Are both substitute parts RoHS3 compliant?

A: Yes, both SLF10145T-471MR47-PF and SDR1045-471K are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original part's environmental and regulatory status.

Q: What is the significance of "Not For New Designs" status on SLF10145T-471MR47-PF?

A: This designation indicates the manufacturer does not recommend this part for new product development. It remains available for legacy system support and direct replacement of existing designs. For new designs, SDR1045-471K is the preferred option due to its active product status.

Q: How do package dimensions affect substitution?

A: The ELL-ATV471M measures 10.00mm x 10.00mm with 4.50mm maximum height. SLF10145T-471MR47-PF is 10.10mm x 10.10mm with 4.80mm height, and SDR1045-471K is 10.00mm x 10.00mm with 4.80mm height. Verify PCB layout clearances and height constraints before substitution, particularly in space-constrained applications.

Q: What operating temperature range should be considered?

A: The original ELL-ATV471M does not specify operating temperature limits. Substitute parts provide defined ranges: SLF10145T-471MR47-PF operates -40°C to 105°C, and SDR1045-471K operates -40°C to 125°C. Confirm your application's temperature requirements fall within the selected substitute's rated range.

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