ELC-09D122DF Equivalent & Substitute Parts

Part Overview

The ELC-09D122DF is a 1.2 mH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 230 mA with a DC resistance of 2.4 Ohm. This through-hole radial component is designed for applications requiring fixed inductance in compact form factors. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain the same inductance value, tolerance, and mounting configuration while meeting current availability and compliance requirements.

Substiute Parts

ELC-09D122DF

Panasonic Electronic ComponentsIn Stock: 1194ELC-09D122DF Datasheet

Current PartRFQ

AISR-875-122K

Abracon LLCIn Stock: 1067AISR-875-122K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ELC-09D122DF is determined by the following critical parameters:

• Inductance Value: Must be 1.2 mH with ±10% tolerance
• Current Rating: Minimum 230 mA; higher ratings are acceptable
• Mounting Type: Through hole configuration required
• Package / Case: Radial, vertical cylinder form factor
• Compliance: ROHS3 compliance required

The AISR-875-122K from Abracon LLC meets these substitution criteria. While it features shielding (versus unshielded) and a higher DC resistance (4.04 Ohm max versus 2.4 Ohm), these differences are within acceptable engineering tolerances for equivalent functionality. The substitute maintains identical inductance, tolerance, and mounting specifications while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The AISR-875-122K is the qualified substitute for the obsolete ELC-09D122DF based on the following factors:

• Both parts maintain identical inductance specifications (1.2 mH ±10%)
• Current rating of 240 mA exceeds the original 230 mA requirement
• Through-hole radial mounting configuration is preserved
• Both components are ROHS3 compliant with MSL 1 rating
• The substitute is in active production status with confirmed inventory availability
• Physical form factor (radial, vertical cylinder) remains compatible with existing PCB layouts

The increased DC resistance in the substitute (4.04 Ohm max versus 2.4 Ohm) and the addition of shielding represent design improvements that do not compromise functional equivalence for standard inductor applications.

Frequently Asked Questions (FAQ)

Q: Can the AISR-875-122K directly replace the ELC-09D122DF in existing designs?

A: Yes. Both parts share identical inductance values, tolerance, current ratings above the original specification, and compatible through-hole radial mounting. The substitute meets all critical electrical and mechanical parameters for direct substitution.

Q: What is the impact of the higher DC resistance in the AISR-875-122K?

A: The AISR-875-122K has a maximum DC resistance of 4.04 Ohm compared to 2.4 Ohm in the original part. This difference affects power dissipation and should be evaluated in applications where thermal performance is critical. For most standard filtering and impedance matching applications, this variance is within acceptable engineering tolerances.

Q: Does the shielding in the AISR-875-122K affect compatibility?

A: Shielding is an enhancement that reduces electromagnetic interference. In applications where the original unshielded design was specified, the shielded substitute provides equal or improved performance without introducing incompatibility.

Q: Are both parts available for procurement?

A: The ELC-09D122DF is obsolete with limited remaining inventory. The AISR-875-122K is in active production status with confirmed stock availability, making it the practical choice for new orders and ongoing supply chain requirements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ELC-09D122DF and AISR-875-122K are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), ensuring compatibility with modern manufacturing and environmental requirements.