ELL-6SH120M Equivalent & Substitute Parts

Part Overview

The ELL-6SH120M is a 12 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.2 A with a DC resistance of 71mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates at 100 kHz inductance test frequency and is housed in a nonstandard surface mount package measuring 6.40mm × 6.00mm × 3.30mm (max height).

Substiute Parts

ELL-6SH120M

Panasonic Electronic ComponentsIn Stock: 746ELL-6SH120M Datasheet

Current PartRFQ

SCRH5D28R-120

Signal TransformerIn Stock: 1219SCRH5D28R-120 Datasheet

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SRR5028-120Y

Bourns Inc.In Stock: 2492SRR5028-120Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-6SH120M is determined by the following core parameters:

• Inductance Value: 12 µH (primary electrical specification)
• Shielding: Shielded construction required
• Mounting Type: Surface mount configuration
• Current Rating: Minimum 1.2 A to support original circuit requirements
• DC Resistance: Proximity to 71mOhm baseline to maintain circuit performance
• Inductance Test Frequency: 100 kHz measurement standard
• Compliance: ROHS3 compliance and MSL 1 rating

The substitute parts SCRH5D28R-120 (Signal Transformer) and SRR5028-120Y (Bourns Inc.) meet these core electrical and mechanical criteria, though with variations in tolerance, current saturation characteristics, and physical dimensions within acceptable engineering margins.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with ROHS3 compliance and MSL 1 ratings, providing long-term procurement stability compared to the obsolete ELL-6SH120M.

SCRH5D28R-120 (Signal Transformer) offers the highest current rating at 2.18 A with saturation current of 1.2 A, matching the original part's saturation specification. DC resistance of 71.6mOhm Max closely aligns with the original 71mOhm specification. Physical dimensions (6.30mm × 6.20mm × 3.00mm max) are comparable to the original footprint. This part is suitable for applications requiring margin above the 1.2 A baseline current requirement.

SRR5028-120Y (Bourns Inc.) provides a ferrite drum core wirewound construction with 1.46 A current rating and 1.25 A saturation current. DC resistance of 80mOhm Max represents a 12.7% increase over the original specification. The smaller footprint (5.80mm × 5.80mm × 3.00mm max) may offer layout advantages in space-constrained designs. This part includes specified Q factor (11 @ 2.52MHz) and self-resonant frequency (28MHz) data.

Both parts maintain the required 12 µH inductance at 100 kHz test frequency and shielded surface mount configuration. Selection between substitutes depends on specific circuit current requirements, tolerance stack-up analysis, and physical layout constraints.

Frequently Asked Questions (FAQ)

Q: Can SCRH5D28R-120 or SRR5028-120Y be used as direct replacements for ELL-6SH120M?

A: Both parts meet the core electrical specifications (12 µH inductance, shielded construction, surface mount configuration) and compliance requirements (ROHS3, MSL 1). However, physical dimensions differ slightly. SCRH5D28R-120 and SRR5028-120Y are both smaller in footprint than the original ELL-6SH120M. PCB layout verification is required to confirm fit within the original mounting area.

Q: What is the significance of the tolerance difference between ±20% (ELL-6SH120M) and ±30% (substitutes)?

A: The original part specifies ±20% inductance tolerance, while both substitutes specify ±30%. This represents a wider acceptable inductance range for the substitute parts. Circuit designs with tight inductance requirements should account for this increased tolerance band during design validation.

Q: How do the current ratings affect substitution suitability?

A: The ELL-6SH120M is rated for 1.2 A. SCRH5D28R-120 (2.18 A) and SRR5028-120Y (1.46 A) both exceed this rating, providing additional current capacity margin. For circuits operating at or near 1.2 A, both substitutes are suitable. The saturation current specifications (1.2 A for SCRH5D28R-120 and 1.25 A for SRR5028-120Y) should be verified against circuit peak current requirements.

Q: Why is DC resistance important in inductor substitution?

A: DC resistance affects circuit efficiency and power dissipation. The original ELL-6SH120M specifies 71mOhm. SCRH5D28R-120 (71.6mOhm Max) maintains near-identical resistance, while SRR5028-120Y (80mOhm Max) represents approximately 12.7% higher resistance. For power-sensitive applications, the lower DCR of SCRH5D28R-120 may be preferable.

Q: Are there any packaging or handling differences between these parts?

A: All three parts carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating no special moisture control requirements during storage or handling. SCRH5D28R-120 is supplied in Tape & Reel packaging, while packaging information for SRR5028-120Y is also Tape & Reel format. The nonstandard package type for all three parts requires verification of PCB pad layout compatibility.

Q: What is the impact of the ferrite core material in SRR5028-120Y compared to the wirewound construction of ELL-6SH120M?

A: SRR5028-120Y uses ferrite drum core wirewound construction, while ELL-6SH120M is wirewound without specified core material. Both are shielded inductors tested at 100 kHz. The ferrite core in SRR5028-120Y provides specified Q factor (11 @ 2.52MHz) and self-resonant frequency (28MHz) characteristics. Circuit performance at frequencies above 100 kHz should be evaluated based on these frequency response parameters.