ELC-09D391F Equivalent & Substitute Parts

Part Overview

The ELC-09D391F is a 390 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 460 mA continuous current with 860mOhm DC resistance. This through-hole radial component operates at a test frequency of 10 kHz and is housed in a vertical cylinder package measuring 9.50mm diameter by 8.90mm height.

The ELC-09D391F is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this inductor specification.

Substiute Parts

ELC-09D391F

Panasonic Electronic ComponentsIn Stock: 979ELC-09D391F Datasheet

Current PartRFQ

RL622-391K-RC

Bourns Inc.In Stock: 1158RL622-391K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELC-09D391F must satisfy the following core electrical and mechanical criteria:

Electrical Parameters:

• Inductance value: 390 µH (±10% tolerance acceptable)
• Current rating: minimum 460 mA
• DC resistance: compatible with circuit design requirements
• Unshielded configuration

Mechanical Parameters:

• Through-hole mounting type
• Radial, vertical cylinder package orientation
• Physical dimensions compatible with PCB layout constraints

Compliance Requirements:

• ROHS3 compliance maintained
• Active or current product status preferred for long-term availability

The RL622-391K-RC from Bourns Inc. meets these substitution criteria with equivalent inductance, higher current rating (480 mA), and active product status.

Parameter Comparison

Engineering Selection Recommendations

The RL622-391K-RC qualifies as a direct substitute for the ELC-09D391F based on matched inductance value, tolerance, and package configuration. The Bourns component provides superior long-term availability as an active product, eliminating obsolescence risk associated with the Panasonic part.

Both components maintain ROHS3 compliance, ensuring regulatory alignment for new designs and legacy system support. The RL622-391K-RC delivers higher current rating (480 mA versus 460 mA), providing additional design margin in current-limited applications.

Physical dimensions differ slightly: the Bourns part is smaller in diameter (8.50mm versus 9.50mm) but taller (11.00mm versus 8.90mm). PCB layout verification is necessary to confirm mechanical fit within existing board designs.

Frequently Asked Questions (FAQ)

Q: Can the RL622-391K-RC replace the ELC-09D391F in existing designs?

A: Yes. Both components share identical inductance (390 µH), tolerance (±10%), and through-hole radial package configuration. Physical dimensions differ, requiring PCB layout verification to confirm mechanical clearance and mounting compatibility.

Q: What is the significance of the higher current rating on the Bourns part?

A: The RL622-391K-RC is rated for 480 mA versus 460 mA on the Panasonic part. This provides additional operational margin and reduces thermal stress in current-limited circuit applications.

Q: How do the DC resistance values compare?

A: The ELC-09D391F specifies 860mOhm, while the RL622-391K-RC specifies 1Ohm maximum. This 140mOhm difference may impact power dissipation and voltage drop calculations in precision applications. Circuit analysis is required to determine acceptability.

Q: Why is product status important for this substitution?

A: The ELC-09D391F is obsolete, creating supply chain risk and potential discontinuation of manufacturing. The RL622-391K-RC maintains active status, ensuring continued availability and long-term design support.

Q: Are both parts RoHS compliant?

A: Yes. Both the ELC-09D391F and RL622-391K-RC are ROHS3 compliant, meeting environmental and regulatory requirements for commercial and industrial applications.