ELC-09D120DF Equivalent & Substitute Parts

Part Overview

The ELC-09D120DF is a 12 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 2.3 A with a DC resistance of 31mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs, repairs, and production continuity. The part is mounted through-hole in a radial, vertical cylinder package and complies with ROHS3 standards.

Substiute Parts

ELC-09D120DF

Panasonic Electronic ComponentsIn Stock: 874ELC-09D120DF Datasheet

Current PartRFQ

RL622-120K-RC

Bourns Inc.In Stock: 1878RL622-120K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-09D120DF is determined by the following critical parameters:

• Inductance Value: Must be 12 µH to maintain circuit functionality
• Current Rating: Substitute must support minimum 2.3 A; higher ratings are acceptable
• DC Resistance (DCR): Substitute DCR must not significantly exceed the original 31mOhm to prevent excessive power dissipation
• Mounting Type: Must be through-hole to ensure PCB compatibility
• Package / Case: Must be radial, vertical cylinder configuration for mechanical fit
• Shielding: Unshielded configuration is maintained across substitutes
• Compliance: ROHS3 compliance is required for regulatory alignment

The RL622-120K-RC from Bourns Inc. meets these substitution criteria with equivalent inductance, superior current rating (2.7 A vs. 2.3 A), and compatible through-hole radial mounting. While the DCR is higher at 50mOhm maximum, this remains within acceptable engineering tolerances for most applications requiring this inductance value.

Parameter Comparison

Engineering Selection Recommendations

The RL622-120K-RC is the primary substitute for the ELC-09D120DF based on the following factors:

• Product Status: The RL622-120K-RC is active and in production, ensuring long-term availability and supply chain continuity
• Compliance: Both parts are ROHS3 compliant, maintaining regulatory requirements
• Electrical Performance: The substitute provides equivalent inductance at 12 µH with improved current rating (2.7 A vs. 2.3 A), offering design margin
• Mechanical Compatibility: Both parts use through-hole radial, vertical cylinder mounting; however, dimensional differences exist (diameter and height variations)
• Certifications: Both parts carry ECCN EAR99 classification

Selection of the RL622-120K-RC is appropriate for applications where the ELC-09D120DF is no longer available. PCB layout verification is necessary due to dimensional differences in diameter and height.

Frequently Asked Questions (FAQ)

Q: Can the RL622-120K-RC directly replace the ELC-09D120DF without circuit modification?

A: The RL622-120K-RC provides equivalent inductance (12 µH) and superior current rating (2.7 A vs. 2.3 A). However, the higher DCR (50mOhm max vs. 31mOhm) may increase power dissipation in high-current applications. Circuit performance should be verified for applications sensitive to DCR variations.

Q: Are there mechanical fit concerns when substituting these parts?

A: Yes. The RL622-120K-RC has a smaller diameter (0.335" vs. 0.374") but greater height (0.433" vs. 0.350"). PCB layout and component placement must be verified to ensure the substitute fits within available space constraints.

Q: Do both parts meet the same compliance standards?

A: Both the ELC-09D120DF and RL622-120K-RC are ROHS3 compliant and carry ECCN EAR99 classification. Compliance requirements are maintained across the substitution.

Q: What is the tolerance difference between these parts?

A: The ELC-09D120DF has ±20% tolerance, while the RL622-120K-RC has ±10% tolerance. The substitute offers tighter inductance tolerance, which may improve circuit performance in applications requiring precise inductance values.

Q: Is the RL622-120K-RC suitable for all applications using the ELC-09D120DF?

A: The substitute is suitable for applications where the 12 µH inductance value and through-hole radial mounting are required. Applications with strict DCR or dimensional constraints must be evaluated individually based on circuit requirements and available PCB space.