ELL-4GG120M Equivalent & Substitute Parts

Part Overview

The ELL-4GG120M is a 12 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 650 mA continuous current with 380mOhm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates at 100 kHz test frequency and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substiute Parts

ELL-4GG120M

Panasonic Electronic ComponentsIn Stock: 770ELL-4GG120M Datasheet

Current PartRFQ

1231AS-H-120M=P3

Murata ElectronicsIn Stock: 48361231AS-H-120M=P3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-4GG120M is determined by the following critical parameters:

• Inductance Value: 12 µH with ±20% tolerance
• Current Rating: Minimum 650 mA continuous current capability
• DC Resistance: Maximum 380 mOhm to maintain circuit performance
• Shielding: Shielded construction required
• Mounting: Surface mount configuration
• Test Frequency: 100 kHz inductance measurement standard
• Compliance: RoHS3 compliance and MSL 1 rating

The substitute part 1231AS-H-120M=P3 meets all critical substitution criteria. This Murata Electronics component maintains the same inductance specification, exceeds the current rating requirement, provides lower DC resistance, and maintains shielded construction with identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 1231AS-H-120M=P3 from Murata Electronics is a direct functional substitute for the obsolete ELL-4GG120M. Selection is supported by:

• Product Status: The substitute is active production status, ensuring long-term availability and supply chain stability compared to the obsolete original part.
• Electrical Equivalence: Identical inductance value and tolerance with superior current rating (1.2 A vs. 650 mA) and lower DC resistance (186 mOhm max vs. 380 mOhm), providing improved thermal performance and reduced power dissipation.
• Compliance Alignment: Both components maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with existing manufacturing and environmental requirements.
• Mechanical Compatibility: Surface mount configuration and comparable physical dimensions support direct board-level substitution with minimal layout modification.

Frequently Asked Questions (FAQ)

Q: Can the 1231AS-H-120M=P3 be used as a direct replacement for the ELL-4GG120M?

A: Yes. Both components share identical inductance specifications (12 µH ±20%), shielded construction, surface mount configuration, and compliance certifications. The substitute exceeds the original current rating and provides lower DC resistance, making it functionally superior for the same application.

Q: What are the key differences between these two inductors?

A: The primary differences are manufacturer (Panasonic vs. Murata), current rating (650 mA vs. 1.2 A), DC resistance (380 mOhm vs. 186 mOhm max), and product status (obsolete vs. active). The substitute provides enhanced electrical performance with lower losses and higher current capacity.

Q: Are the physical dimensions compatible?

A: The components have comparable footprints suitable for surface mount applications. The substitute is slightly larger in height (1.80mm max vs. 1.40mm max) but maintains a nonstandard package classification. Board layout verification is recommended for height-constrained applications.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the ELL-4GG120M and 1231AS-H-120M=P3 are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating. The substitute additionally specifies operating temperature range (-40°C ~ 85°C), providing explicit thermal performance documentation.

Q: Why is the substitute's DC resistance lower?

A: The 1231AS-H-120M=P3 uses drum core ferrite construction with optimized winding geometry, resulting in 186 mOhm maximum resistance compared to the original 380 mOhm. This reduces I²R losses and improves overall circuit efficiency.

Q: Is packaging format a consideration for substitution?

A: The original part packaging is not specified in available documentation. The substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. Confirm packaging compatibility with your procurement and assembly processes.