ELL-8TP150MB Equivalent & Substitute Parts

Part Overview

The ELL-8TP150MB is a 15 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 2.3 A with a DC resistance of 44 mOhm. This component features surface mount technology with nonstandard corner terminals and operates across the temperature range of -40°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Inductance	15 µH
Current Rating	2.3 A
DC Resistance (DCR)	44 mOhm
Shielding	Shielded
Mounting Type	Surface Mount
Package Dimensions	8.00mm x 8.00mm x 5.00mm (max)
Operating Temperature	-40°C to 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ELL-8TP150MB are qualified based on the following electrical and mechanical parameters:

Inductance Value: Exact match at 15 µH
Current Rating: Equal to or greater than 2.3 A
DC Resistance: Within acceptable operating limits for the application
Shielding: Shielded construction required
Package Footprint: 8.00mm x 8.00mm surface mount configuration
Mounting Type: Surface mount technology
RoHS Compliance: ROHS3 compliant status maintained

The identified substitute parts meet these core criteria while accommodating variations in tolerance, saturation current, and operating temperature ranges as specified by their respective manufacturers.

Parameter Comparison

Parameter	ELL-8TP150MB (Panasonic)	NR8040T150M (Taiyo Yuden)	SRU8043-150Y (Bourns)
Inductance	15 µH	15 µH	15 µH
Inductance Tolerance	±20%	±20%	±30%
Current Rating (Amps)	2.3 A	2.4 A	2.7 A
Current - Saturation (Isat)	2.3 A	2.7 A	2.0 A
DC Resistance (DCR)	44 mOhm	65 mOhm Max	46 mOhm
Shielding	Shielded	Shielded	Shielded
Type	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Package Dimensions	8.00mm x 8.00mm	8.00mm x 8.00mm	8.00mm x 8.00mm
Height - Seated (Max)	5.00mm	4.00mm	4.60mm
Operating Temperature	-40°C to 105°C	-25°C to 120°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Not For New Designs	Active

Engineering Selection Recommendations

NR8040T150M (Taiyo Yuden): This substitute provides equivalent inductance and tolerance with a current rating of 2.4 A, exceeding the original 2.3 A specification. The DC resistance of 65 mOhm is higher than the original 44 mOhm, which may impact thermal performance in current-limited applications. The part is classified as "Not For New Designs," indicating limited long-term availability. ROHS3 compliance and MSL 1 rating are maintained. Operating temperature range extends to 120°C, providing improved thermal margin.

SRU8043-150Y (Bourns): This substitute offers the highest current rating at 2.7 A with DC resistance of 46 mOhm, closely matching the original specification. The inductance tolerance is ±30% compared to the original ±20%, which may require circuit validation in tolerance-sensitive applications. The part maintains Active product status, ensuring ongoing availability and supply chain stability. ROHS3 compliance and MSL 1 rating are maintained. Operating temperature range extends to 125°C, providing the widest thermal operating window.

Frequently Asked Questions (FAQ)

Q: Can NR8040T150M be used as a direct replacement for ELL-8TP150MB?

A: NR8040T150M meets the core electrical requirements of 15 µH inductance, 2.4 A current rating, and shielded surface mount construction in an 8.00mm x 8.00mm footprint. However, the increased DC resistance of 65 mOhm versus 44 mOhm will result in higher power dissipation. Circuit thermal analysis is required to confirm suitability for your specific application.

Q: What are the key differences between the substitute parts?

A: SRU8043-150Y provides the closest DC resistance match at 46 mOhm and maintains Active product status for long-term availability. NR8040T150M offers a lower profile at 4.00mm height but exhibits higher DC resistance at 65 mOhm. SRU8043-150Y has a wider operating temperature range (-40°C to 125°C) compared to NR8040T150M (-25°C to 120°C).

Q: Are there height clearance considerations when substituting?

A: Yes. The original ELL-8TP150MB has a maximum seated height of 5.00mm. Both substitutes have reduced heights: NR8040T150M at 4.00mm and SRU8043-150Y at 4.60mm. This provides additional PCB layout flexibility and may improve thermal performance through reduced component profile.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. Both NR8040T150M and SRU8043-150Y are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental and regulatory status.

Q: Which substitute is recommended for new designs?

A: SRU8043-150Y carries Active product status, indicating manufacturer commitment to ongoing production and supply. NR8040T150M is classified as "Not For New Designs," suggesting potential future discontinuation. For new design initiatives, SRU8043-150Y is the preferred selection based on product lifecycle status.

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