ELC11D271F Equivalent & Substitute Parts

Part Overview

The ELC11D271F is a 270 µH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.1 A with a DC resistance of 320mOhm. This through-hole radial component is designed for general-purpose filtering and energy storage applications in electronic circuits.

The ELC11D271F is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this inductance value and current rating.

Substiute Parts

ELC11D271F

Panasonic Electronic ComponentsIn Stock: 1135ELC11D271F Datasheet

Current PartRFQ

RLB9012-271KL

Bourns Inc.In Stock: 1773RLB9012-271KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC11D271F is based on the following critical parameters:

• Inductance Value: 270 µH (exact match required)
• Tolerance: ±10% (standard tolerance maintained)
• Core Type: Ferrite, unshielded drum core (functional equivalence)
• Mounting Type: Through hole radial configuration (mechanical compatibility)
• Package / Case: Radial, vertical cylinder (form factor compatibility)

The RLB9012-271KL from Bourns Inc. meets these core substitution criteria. While the current rating and DC resistance differ from the main part, the substitute operates within acceptable parameters for applications where the ELC11D271F was specified, provided circuit design accounts for the lower current rating (900 mA vs. 1.1 A) and higher DC resistance (750mOhm Max vs. 320mOhm).

Parameter Comparison

Engineering Selection Recommendations

The RLB9012-271KL is suitable as a substitute for the ELC11D271F based on the following factors:

• Both components maintain the same 270 µH inductance value and ±10% tolerance, ensuring functional equivalence in filtering and energy storage applications.
• Both use ferrite unshielded drum core construction with identical mounting and package configurations, providing mechanical and electrical compatibility.
• The RLB9012-271KL is actively manufactured and ROHS3 compliant, providing superior supply chain availability compared to the obsolete ELC11D271F.
• Circuit designs must account for the RLB9012-271KL's lower current rating (900 mA) and higher DC resistance (750mOhm Max). Applications operating at or near 1.1 A require verification that 900 mA operation is acceptable, and the increased resistive losses must be evaluated for thermal and efficiency impacts.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-271KL directly replace the ELC11D271F without circuit modification?

A: Direct mechanical and electrical substitution is possible for the inductance function. However, the lower current rating and higher DC resistance require circuit-level evaluation. Applications operating below 900 mA with acceptable resistive losses can use the substitute without modification. Higher current applications or those sensitive to resistive losses require design review.

Q: What are the key differences between these two inductors?

A: Both components share identical inductance (270 µH), tolerance (±10%), core type (ferrite unshielded drum core), and package configuration (radial through-hole). The RLB9012-271KL has a lower current rating (900 mA vs. 1.1 A) and higher DC resistance (750mOhm Max vs. 320mOhm). The RLB9012-271KL includes specified operating temperature range (-55°C ~ 125°C) and self-resonant frequency (2.4MHz), which are not provided for the ELC11D271F.

Q: Are there any compliance or supply chain advantages to using the RLB9012-271KL?

A: Yes. The RLB9012-271KL is actively manufactured with ROHS3 compliance and REACH unaffected status, providing reliable long-term availability. The ELC11D271F is obsolete, making the RLB9012-271KL the preferred choice for new designs and ongoing production.

Q: How do the physical dimensions compare?

A: The RLB9012-271KL is physically smaller. The ELC11D271F measures 0.453" diameter (11.50mm) with 0.547" height (13.90mm), while the RLB9012-271KL measures 0.354" diameter (9.00mm) with 0.480" height (12.20mm). Both fit standard through-hole radial footprints, though the smaller size of the RLB9012-271KL may provide PCB layout advantages.