ELC-09D680F Equivalent & Substitute Parts

Part Overview

The ELC-09D680F is a 68 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1 A with a DC resistance of 140mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The radial, vertical cylinder package and through-hole mounting configuration define its application scope in legacy and new designs requiring equivalent inductance and current handling characteristics.

Substiute Parts

ELC-09D680F

Panasonic Electronic ComponentsIn Stock: 950ELC-09D680F Datasheet

Current PartRFQ

744731680

Würth ElektronikIn Stock: 984744731680 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-09D680F is determined by the following critical parameters:

• Inductance Value: 68 µH (±10% tolerance acceptable)
• Current Rating: Minimum 1 A; higher ratings provide design margin
• DC Resistance: Maximum 200mOhm; higher values acceptable within circuit performance limits
• Mounting Type: Through Hole required
• Package / Case: Radial, Vertical Cylinder configuration
• Compliance: ROHS3 Compliant status maintained

The Würth Elektronik 744731680 qualifies as a substitute based on matching inductance, exceeding current rating (1.5 A vs. 1 A), and maintaining compatible physical form factor and compliance certifications. The increased DC resistance (200mOhm vs. 140mOhm) and shielded construction represent design improvements over the obsolete Panasonic part.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744731680 is the qualified substitute for the obsolete ELC-09D680F. Both components maintain ROHS3 compliance and are suitable for through-hole PCB assembly. The 744731680 offers active product status with ongoing manufacturer support, addressing the obsolescence constraint of the original part. The smaller physical footprint (0.307" vs. 0.374" diameter) may require PCB layout verification for existing designs. The shielded drum core construction of the 744731680 provides electromagnetic containment benefits not present in the unshielded Panasonic design.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 744731680 directly replace the ELC-09D680F in existing designs?

A: The 744731680 matches the critical electrical parameters (68 µH inductance, ±10% tolerance, 1 A minimum current rating) and mounting type (through-hole, radial vertical cylinder). The smaller physical dimensions (0.307" vs. 0.374" diameter) require PCB layout verification to confirm clearance and component spacing compatibility.

Q: What is the impact of the increased DC resistance (200mOhm vs. 140mOhm)?

A: The 60mOhm increase in DC resistance results in proportionally higher power dissipation under load. Circuit thermal analysis is required to confirm acceptable operating conditions at the application's specified current levels.

Q: Does the shielded construction of the 744731680 affect circuit performance?

A: Shielding reduces electromagnetic radiation and susceptibility compared to the unshielded ELC-09D680F. This represents a design improvement for noise-sensitive applications and does not degrade compatibility with the original circuit topology.

Q: Are both parts RoHS compliant?

A: Both the ELC-09D680F and 744731680 are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and assembly.

Q: What is the significance of the different inductance test frequencies (10 kHz vs. 1 kHz)?

A: The inductance value of 68 µH is specified at different measurement frequencies. Both parts maintain the same nominal inductance within ±10% tolerance across their respective test conditions, ensuring functional equivalence in circuit applications.