ELL-6RH270M Equivalent & Substitute Parts

Part Overview

The ELL-6RH270M is a 27 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 650 mA continuous current with 260mOhm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The part operates at surface mount configuration in a nonstandard package measuring 6.40mm × 6.00mm × 2.80mm (height).

Substiute Parts

ELL-6RH270M

Panasonic Electronic ComponentsIn Stock: 901ELL-6RH270M Datasheet

Current PartRFQ

CDRH62BNP-270MC-B

Sumida America Components Inc.In Stock: 1055CDRH62BNP-270MC-B Datasheet

SimilarRFQ

SRR5028-270Y

Bourns Inc.In Stock: 2405SRR5028-270Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELL-6RH270M are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 27 µH (exact match required)
• Shielding: Shielded configuration
• Mounting type: Surface Mount
• Current rating: Minimum 650 mA
• DC resistance: Within acceptable operating range for the application
• Package classification: Nonstandard surface mount

Secondary Compatibility Factors:

• RoHS3 compliance
• Moisture sensitivity level 1
• Physical dimensions compatible with PCB layout constraints

The two substitute parts listed (CDRH62BNP-270MC-B and SRR5028-270Y) meet these criteria with variations in core material, current capacity, and DC resistance that remain within acceptable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

CDRH62BNP-270MC-B (Sumida America Components Inc.)

This substitute maintains electrical specifications closely aligned with the ELL-6RH270M. Current rating of 660 mA exceeds the original 650 mA requirement by a minimal margin. DC resistance of 380mOhm represents a 46% increase over the original specification. Physical dimensions are slightly larger (6.60mm × 6.20mm vs. 6.40mm × 6.00mm), requiring PCB layout verification. Operating temperature range of -40°C to 100°C is defined. Active product status ensures long-term availability. ROHS3 compliance and MSL 1 rating match the original part.

SRR5028-270Y (Bourns Inc.)

This substitute provides superior current handling at 1.05 A, representing a 62% increase over the original 650 mA rating. DC resistance of 160mOhm is 38% lower than the original specification, resulting in reduced power dissipation. Inductance tolerance widens to ±30% compared to the original ±20%. Physical dimensions are more compact (5.80mm × 5.80mm), potentially offering PCB space advantages. Operating temperature range extends to -40°C to 125°C. Active product status and full compliance certifications (ROHS3, MSL 1, REACH Unaffected) are confirmed.

Selection between these substitutes depends on thermal performance requirements, PCB space constraints, and tolerance specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can the CDRH62BNP-270MC-B directly replace the ELL-6RH270M without circuit modifications?

A: The CDRH62BNP-270MC-B maintains the same 27 µH inductance and ±20% tolerance. Current rating of 660 mA exceeds the original 650 mA specification. However, the increased DC resistance (380mOhm vs. 260mOhm) will result in higher power dissipation. Thermal analysis of the application is required to confirm compatibility. Physical dimensions are slightly larger and must be verified against PCB layout constraints.

Q: What are the implications of the SRR5028-270Y's lower DC resistance?

A: The 160mOhm DC resistance of the SRR5028-270Y is 38% lower than the original ELL-6RH270M specification. This reduces I²R power losses in the inductor, improving overall circuit efficiency. The lower resistance also decreases thermal generation. This characteristic makes the SRR5028-270Y advantageous for applications where thermal management is critical.

Q: How does the ±30% tolerance of the SRR5028-270Y compare to the original ±20% tolerance?

A: The SRR5028-270Y operates with a wider inductance tolerance band (±30% vs. ±20%). Applications requiring tighter inductance control may require circuit compensation or selection of parts within a narrower tolerance window. The impact depends on the specific circuit's sensitivity to inductance variation.

Q: Are there physical footprint differences that affect PCB design?

A: Yes. The ELL-6RH270M measures 6.40mm × 6.00mm with 2.80mm height. The CDRH62BNP-270MC-B is slightly larger at 6.60mm × 6.20mm with 3.00mm height. The SRR5028-270Y is more compact at 5.80mm × 5.80mm with 3.00mm height. PCB layout must accommodate these dimensional variations, particularly in space-constrained designs.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. Both CDRH62BNP-270MC-B and SRR5028-270Y are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original ELL-6RH270M specifications.

Q: What is the significance of the ELL-6RH270M being classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Panasonic Electronic Components. While inventory may remain available from distributors, long-term supply cannot be guaranteed. Substitution with active-status parts (CDRH62BNP-270MC-B or SRR5028-270Y) ensures design continuity and future production viability.