ELL-6RH221M Equivalent & Substitute Parts

Part Overview

The ELL-6RH221M is a 220 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 200 mA with 2.3Ohm DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates at 100 kHz test frequency and is housed in a nonstandard surface mount package measuring 6.40mm × 6.00mm × 2.80mm (max height). ROHS3 compliance and MSL Level 1 rating ensure compatibility with modern manufacturing standards.

Substiute Parts

ELL-6RH221M

Panasonic Electronic ComponentsIn Stock: 1219ELL-6RH221M Datasheet

Current PartRFQ

B82472G6224M000

EPCOS - TDK ElectronicsIn Stock: 15395B82472G6224M000 Datasheet

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B82472P6224M000

EPCOS - TDK ElectronicsIn Stock: 991B82472P6224M000 Datasheet

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CDRH62BNP-221MC-B

Sumida America Components Inc.In Stock: 960CDRH62BNP-221MC-B Datasheet

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IDCS5020ER221M

Vishay DaleIn Stock: 1207IDCS5020ER221M Datasheet

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SLF7045T-221MR40-H

TDK CorporationIn Stock: 1947SLF7045T-221MR40-H Datasheet

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SRR5028-221Y

Bourns Inc.In Stock: 16742SRR5028-221Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-6RH221M is determined by the following mandatory parameters:

• Inductance Value: 220 µH (exact match required)
• Tolerance: ±20% or tighter
• Current Rating: Minimum 200 mA (equal or higher acceptable)
• Shielding: Shielded configuration required
• Mounting Type: Surface mount only
• Test Frequency: 100 kHz preferred for consistency

All identified substitute parts meet the core inductance and current rating requirements. Variations in DC resistance, package dimensions, and operating temperature ranges are acceptable provided the electrical performance envelope encompasses the original specification. Parts with higher current ratings and lower DCR values offer improved thermal performance and design margin.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance)

B82472G6224M000 and B82472P6224M000 from EPCOS - TDK Electronics are functionally equivalent with superior current handling (430 mA) and lower DC resistance (880mOhm max). B82472P6224M000 includes AEC-Q200 automotive qualification and extended operating temperature range (-55°C to 150°C), making it suitable for demanding applications. Both parts are actively manufactured and ROHS3 compliant.

IDCS5020ER221M from Vishay Dale offers the highest current rating (450 mA) with 800mOhm max DCR and AEC-Q200 compliance. This part provides maximum design margin for thermal performance and is actively produced.

SRR5028-221Y from Bourns Inc. is an active production part with 300 mA rating and 1.25Ohm max DCR. This substitute maintains closest dimensional similarity to the original (5.80mm × 5.80mm × 3.00mm) and is suitable for space-constrained applications.

Secondary Substitutes (Limited Availability or Design Status)

CDRH62BNP-221MC-B from Sumida America Components Inc. provides 230 mA rating with 3.12Ohm max DCR. Operating temperature range is limited to -40°C to 100°C. This part is actively manufactured but offers less thermal margin than primary alternatives.

SLF7045T-221MR40-H from TDK Corporation carries AEC-Q200 qualification and 400 mA rating with 996mOhm max DCR. However, this part is designated "Not For New Designs," limiting its suitability for new product development despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher current rating than the original ELL-6RH221M?

A: Yes. The ELL-6RH221M is rated for 200 mA. All listed substitutes have equal or higher current ratings (230 mA minimum). Higher current ratings provide additional design margin and do not create compatibility issues in circuits designed for the original 200 mA specification.

Q: What is the significance of DC resistance differences between the original and substitute parts?

A: The ELL-6RH221M has 2.3Ohm DCR, while substitutes range from 800mOhm to 3.12Ohm. Lower DCR values reduce power dissipation and heat generation. Substitutes with lower DCR (B82472 series, IDCS5020ER221M, SLF7045T) offer improved efficiency. Higher DCR values (CDRH62BNP, SRR5028) are acceptable if thermal performance requirements are met in the application circuit.

Q: Does the tolerance difference between ±20% and ±30% affect substitution?

A: The original part specifies ±20% tolerance. SRR5028-221Y has ±30% tolerance, which is wider. This is acceptable for most applications where inductance variation within ±30% does not impact circuit performance. For precision-critical circuits, parts with ±20% tolerance (all others listed) are preferred.

Q: Are all substitute parts suitable for automotive applications?

A: B82472P6224M000 and SLF7045T-221MR40-H carry AEC-Q200 automotive qualification. Other substitutes do not list this certification. For automotive or high-reliability applications, AEC-Q200 qualified parts are recommended.

Q: What is the impact of different test frequencies (1 kHz vs. 100 kHz)?

A: The original ELL-6RH221M and most substitutes use 100 kHz test frequency for inductance measurement. CDRH62BNP-221MC-B uses 1 kHz. This difference reflects measurement methodology and does not affect functional compatibility. Both measurement standards are valid for component characterization.

Q: Can I substitute based on package dimensions alone?

A: No. Package dimensions vary significantly among substitutes (5.80mm to 12.95mm length). Dimensional compatibility must be verified against PCB layout constraints. However, all parts are surface mount with compatible soldering processes. Electrical parameters (inductance, current rating, DCR) are the primary substitution criteria.

Q: Which substitute offers the best thermal performance?

A: IDCS5020ER221M provides the highest current rating (450 mA) with 800mOhm max DCR, delivering superior thermal performance. B82472 series parts (880mOhm max DCR) and SLF7045T (996mOhm max DCR) also offer excellent thermal characteristics compared to the original 2.3Ohm specification.