ELC-09D271F Equivalent & Substitute Parts

Part Overview

The ELC-09D271F is a 270 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 520 mA with a DC resistance of 500mOhm. This component features a radial, vertical cylinder package suitable for through-hole mounting applications. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

ELC-09D271F

Panasonic Electronic ComponentsIn Stock: 817ELC-09D271F Datasheet

Current PartRFQ

RL622-271K-RC

Bourns Inc.In Stock: 791RL622-271K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-09D271F is based on the following critical parameters:

• Inductance Value: 270 µH (primary electrical specification)
• Tolerance: ±10% (acceptable variance range)
• Current Rating: Minimum 520 mA (operational current capacity)
• DC Resistance: Maximum 500mOhm (electrical loss parameter)
• Mounting Type: Through Hole (mechanical compatibility)
• Package / Case: Radial, Vertical Cylinder (physical form factor)
• Shielding: Unshielded (electromagnetic configuration)

The RL622-271K-RC from Bourns Inc. meets these substitution criteria with equivalent inductance, tolerance, and package configuration. The substitute part demonstrates superior current rating (570 mA) and active product status, providing enhanced performance margins and long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The RL622-271K-RC is a direct functional substitute for the obsolete ELC-09D271F. Both components are ROHS3 compliant and share identical inductance and tolerance specifications. The Bourns part offers active product status, ensuring continued availability and supply chain stability. The substitute provides higher current rating capacity (570 mA versus 520 mA), supporting applications with increased current demands.

Physical dimensions differ slightly: the RL622-271K-RC is smaller in diameter (8.50mm versus 9.50mm) but taller (11.00mm versus 8.90mm). PCB layout verification is required to confirm spatial compatibility in existing designs. The DC resistance of the substitute is higher (750mOhm maximum versus 500mOhm), which may introduce additional power dissipation in current-sensitive applications and should be evaluated against circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the RL622-271K-RC directly replace the ELC-09D271F in existing designs?

A: Electrical substitution is valid based on matching inductance (270 µH), tolerance (±10%), and current rating (570 mA exceeds 520 mA requirement). Physical dimensions differ; PCB layout must be verified for mechanical fit before implementation.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The RL622-271K-RC has a maximum DC resistance of 750mOhm compared to 500mOhm in the original part. This 250mOhm increase results in higher resistive losses. Power dissipation impact should be calculated for the specific application current to determine acceptability.

Q: Are both parts RoHS compliant?

A: Yes, both the ELC-09D271F and RL622-271K-RC are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: What is the primary reason for substitution?

A: The ELC-09D271F is classified as obsolete. The RL622-271K-RC is an active product with equivalent electrical specifications and assured long-term availability.

Q: Do the physical dimension differences affect PCB design?

A: Yes. The substitute part is smaller in diameter (8.50mm versus 9.50mm) but taller (11.00mm versus 8.90mm). Verify clearance in the vertical direction and confirm that the smaller diameter does not create mechanical instability in the mounting hole.