ELL-6SH181M Equivalent & Substitute Parts

Part Overview

The ELL-6SH181M is a 180 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 300 mA with a DC resistance of 1.3Ohm. This component is classified as obsolete, making identification of functionally equivalent alternatives 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-6SH181M

Panasonic Electronic ComponentsIn Stock: 1080ELL-6SH181M Datasheet

Current PartRFQ

SPD62R-184M

API Delevan Inc.In Stock: 892SPD62R-184M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-6SH181M is determined by the following critical parameters:

• Inductance Value: 180 µH (±20% tolerance acceptable)
• Current Rating: Minimum 300 mA required; higher ratings acceptable
• DC Resistance: 1.3Ohm baseline; higher values acceptable within circuit design margins
• Shielding: Shielded construction required
• Mounting Type: Surface mount required
• Package Compatibility: Nonstandard package; physical dimensions must accommodate board layout

The SPD62R-184M qualifies as a substitute based on matching inductance (180 µH), exceeding current rating (350 mA vs. 300 mA), maintaining shielded construction, and surface mount configuration. The higher DCR (2.1Ohm vs. 1.3Ohm) and different core material (drum core ferrite vs. standard wirewound) represent acceptable trade-offs for active product availability.

Parameter Comparison

Engineering Selection Recommendations

The SPD62R-184M is the qualified substitute for the ELL-6SH181M based on the following criteria:

• Inductance Match: Both parts specify 180 µH with ±20% tolerance, ensuring functional equivalence in inductance-dependent circuits.
• Current Capability: The SPD62R-184M exceeds the original 300 mA rating at 350 mA, providing operational margin without derating.
• Compliance Alignment: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.
• Product Status: The SPD62R-184M is active production, eliminating obsolescence risk associated with the ELL-6SH181M.
• Shielded Construction: Both parts maintain shielded design, preserving electromagnetic interference characteristics.

The increased DC resistance (2.1Ohm vs. 1.3Ohm) must be evaluated within circuit-specific thermal and efficiency requirements. The drum core ferrite construction of the SPD62R-184M provides alternative core material characteristics while maintaining the specified inductance and current ratings.

Frequently Asked Questions (FAQ)

Q: Can the SPD62R-184M directly replace the ELL-6SH181M in existing designs?

A: Yes, provided the circuit design accommodates the higher DC resistance (2.1Ohm vs. 1.3Ohm). The increased resistance will generate additional heat dissipation proportional to the square of the operating current. Thermal analysis of the specific application is required to confirm acceptability.

Q: Are the physical dimensions compatible?

A: Both parts use nonstandard packages with similar footprints (ELL-6SH181M: 6.40mm x 6.00mm; SPD62R-184M: 6.60mm x 6.20mm). The SPD62R-184M is slightly larger. PCB layout verification is necessary to confirm mechanical fit.

Q: What is the significance of the different core materials?

A: The ELL-6SH181M uses standard wirewound construction, while the SPD62R-184M employs drum core ferrite. Both achieve the specified 180 µH inductance and shielded performance. The ferrite core may exhibit different frequency response characteristics outside the specified test frequencies (100 kHz vs. 1 kHz), which should be evaluated for frequency-dependent applications.

Q: Does the higher current rating of the SPD62R-184M affect compatibility?

A: No. A higher current rating indicates greater thermal margin and lower saturation risk. The part remains fully compatible at the original 300 mA operating point.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the ELL-6SH181M and SPD62R-184M are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly and storage environments.