ELL-6RH121M Equivalent & Substitute Parts

Part Overview

The ELL-6RH121M is a 120 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 280 mA with 1.5Ohm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part is surface mount, nonstandard package, and RoHS3 compliant with MSL 1 rating.

Substiute Parts

ELL-6RH121M

Panasonic Electronic ComponentsIn Stock: 1113ELL-6RH121M Datasheet

Current PartRFQ

ASPI-0428S-121M-T

Abracon LLCIn Stock: 816ASPI-0428S-121M-T Datasheet

SimilarRFQ

CDRH62BNP-121MC-B

Sumida America Components Inc.In Stock: 1090CDRH62BNP-121MC-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELL-6RH121M are qualified based on the following electrical and mechanical parameters:

• Inductance Value: Must be 120 µH (±20% tolerance acceptable)
• Current Rating: Must support minimum 280 mA operation
• DC Resistance: Must not exceed 1.5Ohm significantly to maintain circuit performance
• Shielding: Must be shielded to match electromagnetic containment requirements
• Mounting Type: Must be surface mount compatible
• Compliance: Must maintain RoHS3 compliance and MSL 1 rating
• Package: Nonstandard surface mount package with compatible footprint dimensions

Two active substitute parts meet these criteria: ASPI-0428S-121M-T (Abracon LLC) and CDRH62BNP-121MC-B (Sumida America Components Inc.).

Parameter Comparison

Engineering Selection Recommendations

ASPI-0428S-121M-T (Abracon LLC) is suitable for applications where the 270 mA current rating is sufficient and lower DC resistance (1.27Ohm max) is beneficial. This part features a drum core construction with ferrite material and operates across -40°C to 85°C. The smaller footprint (4.70mm x 4.70mm) may provide layout advantages in space-constrained designs. Active product status ensures long-term availability.

CDRH62BNP-121MC-B (Sumida America Components Inc.) accommodates higher current requirements (310 mA) and extended operating temperature range (-40°C to 100°C). The slightly higher DC resistance (1.9Ohm max) remains within acceptable margins for most applications. Active product status and established supply chain support procurement continuity. Footprint dimensions (6.60mm x 6.20mm) are closer to the original part.

Both substitutes maintain RoHS3 compliance, MSL 1 rating, and shielded construction. Selection depends on specific circuit current requirements, thermal environment, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can ASPI-0428S-121M-T replace ELL-6RH121M in all applications? A: ASPI-0428S-121M-T is suitable where circuit current does not exceed 270 mA. The lower DC resistance (1.27Ohm max vs. 1.5Ohm) is generally advantageous. Verify footprint compatibility with your PCB layout, as dimensions differ (4.70mm x 4.70mm vs. 6.40mm x 6.00mm).

Q: What are the key differences between the two substitute parts? A: ASPI-0428S-121M-T offers lower DC resistance and smaller footprint but lower current rating (270 mA). CDRH62BNP-121MC-B provides higher current capacity (310 mA) and wider temperature range (-40°C to 100°C) with slightly higher DC resistance (1.9Ohm max).

Q: Are both substitutes RoHS3 compliant? A: Yes, both ASPI-0428S-121M-T and CDRH62BNP-121MC-B are RoHS3 compliant with MSL 1 rating, matching the original part's compliance profile.

Q: Does inductance test frequency affect substitution? A: The original part specifies 100 kHz test frequency. ASPI-0428S-121M-T also uses 100 kHz, while CDRH62BNP-121MC-B uses 1 kHz. Both maintain 120 µH ±20% inductance at their respective test frequencies and are functionally equivalent for circuit operation.

Q: What packaging format is available for these substitutes? A: Both substitutes are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.