ELL-6RH680M Equivalent & Substitute Parts

Part Overview

The ELL-6RH680M is a 68 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 400 mA with a DC resistance of 770mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is RoHS3 compliant and features surface mount packaging in a nonstandard form factor.

Key Parameters

Parameter	Value
Inductance	68 µH
Inductance Tolerance	±20%
Current Rating	400 mA
DC Resistance (DCR)	770mOhm
Shielding	Shielded
Mounting Type	Surface Mount
Inductance Test Frequency	100 kHz
RoHS Status	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ELL-6RH680M are qualified based on the following electrical and mechanical parameters:

Inductance Value: All substitutes maintain 68 µH nominal inductance
Inductance Tolerance: Substitutes operate within ±20% to ±30% tolerance ranges
Current Rating: Substitute parts rated at 350 mA or higher accommodate the 400 mA requirement
DC Resistance: Substitute DCR values range from 350mOhm to 1.07Ohm, representing acceptable operating characteristics for equivalent functionality
Shielding: All substitutes are shielded inductors
Mounting Type: All substitutes are surface mount components
Test Frequency: Substitutes tested at 100 kHz or 1 kHz align with standard inductor characterization methods
Compliance: All substitutes are RoHS3 compliant with MSL 1 rating

Parameter Comparison

Parameter	ELL-6RH680M (Main)	ASPI-0428S-680M-T	CDRH62BNP-680MC-B	SRR5028-680Y
Manufacturer	Panasonic Electronic Components	Abracon LLC	Sumida America Components Inc.	Bourns Inc.
Inductance	68 µH	68 µH	68 µH	68 µH
Inductance Tolerance	±20%	±20%	±20%	±30%
Current Rating (Amps)	400 mA	350 mA	420 mA	620 mA
DC Resistance (DCR)	770mOhm	699mOhm Max	1.07Ohm Max	350mOhm Max
Shielding	Shielded	Shielded	Shielded	Shielded
Type	Wirewound	Drum Core, Wirewound	Not specified	Drum Core, Wirewound
Material - Core	Not specified	Ferrite	Ferrite	Ferrite
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Size / Dimension (L x W)	0.252" x 0.236" (6.40mm x 6.00mm)	0.185" x 0.185" (4.70mm x 4.70mm)	0.260" x 0.244" (6.60mm x 6.20mm)	0.228" x 0.228" (5.80mm x 5.80mm)
Height - Seated (Max)	0.110" (2.80mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)
Operating Temperature	Not specified	-40°C ~ 85°C	-40°C ~ 100°C	-40°C ~ 125°C
Inductance Test Frequency	100 kHz	100 kHz	1 kHz	100 kHz
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three substitute parts are active products with RoHS3 compliance and MSL 1 ratings, providing long-term availability and regulatory compliance advantages over the obsolete ELL-6RH680M.

ASPI-0428S-680M-T (Abracon LLC) offers the closest DCR match at 699mOhm and maintains ±20% inductance tolerance. Current rating of 350 mA is below the main part specification; this part is suitable for applications where the actual operating current does not exceed 350 mA. Operating temperature range is -40°C to 85°C.

CDRH62BNP-680MC-B (Sumida America Components Inc.) provides the highest current rating at 420 mA, exceeding the main part specification. DCR is elevated at 1.07Ohm maximum. Operating temperature range extends to 100°C. Inductance test frequency is 1 kHz rather than 100 kHz.

SRR5028-680Y (Bourns Inc.) delivers the lowest DCR at 350mOhm maximum and the highest current rating at 620 mA. Inductance tolerance is ±30%, wider than the main part. Operating temperature range is the widest at -40°C to 125°C. This part provides the most performance headroom for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can ASPI-0428S-680M-T replace ELL-6RH680M in all applications?

A: ASPI-0428S-680M-T is suitable for applications where the operating current does not exceed 350 mA. The main part is rated for 400 mA; verify actual circuit current requirements before substitution.

Q: What is the significance of DCR differences among the substitutes?

A: DC resistance affects power dissipation and circuit performance. Lower DCR (SRR5028-680Y at 350mOhm) reduces losses; higher DCR (CDRH62BNP-680MC-B at 1.07Ohm) increases power dissipation. Select based on thermal and efficiency requirements.

Q: Are there PCB layout considerations for these substitutes?

A: Yes. Footprint dimensions vary: ASPI-0428S-680M-T is the smallest (4.70mm x 4.70mm), while CDRH62BNP-680MC-B is the largest (6.60mm x 6.20mm). Verify PCB pad layout compatibility before design implementation.

Q: Do all substitutes meet the same compliance standards?

A: All three substitutes are RoHS3 compliant with MSL 1 rating, matching the main part. All carry EAR99 ECCN classification.

Q: Which substitute offers the best thermal performance?

A: SRR5028-680Y supports the highest operating temperature range (-40°C to 125°C) and features the lowest DCR, resulting in minimal heat generation.

Q: How do inductance tolerance differences affect circuit design?

A: The main part and ASPI-0428S-680M-T specify ±20% tolerance, while SRR5028-680Y specifies ±30%. Wider tolerance may require circuit tuning or compensation in precision applications.

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