ELC11D332F Equivalent & Substitute Parts

Part Overview

The ELC11D332F is a 3.3 mH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 310 mA with 3.6Ohm DC resistance. This through-hole radial component is designed for general-purpose filtering and energy storage applications in electronic circuits.

The ELC11D series is currently obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for systems utilizing this inductor specification.

Substiute Parts

ELC11D332F

Panasonic Electronic ComponentsIn Stock: 720ELC11D332F Datasheet

Current PartRFQ

RLB9012-332KL

Bourns Inc.In Stock: 4824RLB9012-332KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC11D332F is determined by the following critical parameters:

• Inductance Value: Must be 3.3 mH with ±10% tolerance
• Core Material & Type: Ferrite, unshielded drum core construction
• Mounting Configuration: Through-hole radial, vertical cylinder orientation
• Current Rating: Minimum 290 mA (acceptable reduction from 310 mA within operational margin)
• DC Resistance: Maximum 9.1Ohm (acceptable increase from 3.6Ohm for equivalent inductance)
• Package Compatibility: Radial lead, through-hole footprint compatibility

The RLB9012-332KL from Bourns Inc. meets these substitution criteria. Both components share identical inductance specifications, core material, mounting type, and package configuration. The substitute part demonstrates active product status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

The RLB9012-332KL is a qualified substitute for the obsolete ELC11D332F based on the following engineering criteria:

Compliance & Certification: Both components are RoHS compliant. The RLB9012-332KL carries ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for new designs and production.

Product Availability: The ELC11D332F is obsolete with no active manufacturing. The RLB9012-332KL is an active product with 4800 units in current inventory, ensuring reliable supply chain continuity.

Electrical Equivalence: Identical inductance value (3.3 mH) and tolerance (±10%) ensure functional compatibility. The current rating reduction from 310 mA to 290 mA is acceptable for applications operating below 290 mA. The DC resistance increase from 3.6Ohm to 9.1Ohm maximum must be evaluated against circuit power dissipation requirements.

Physical Compatibility: Both components use radial through-hole mounting with vertical cylinder orientation. The RLB9012-332KL is physically smaller (0.354" diameter vs. 0.453" diameter), which may provide PCB layout advantages while maintaining footprint compatibility for standard radial lead spacing.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-332KL directly replace the ELC11D332F in existing designs?

A: Yes, for applications operating at or below 290 mA. The identical inductance value, tolerance, core material, and through-hole radial package ensure functional and mechanical compatibility. Verify that circuit current requirements do not exceed the 290 mA rating of the substitute part.

Q: What is the impact of the increased DC resistance (3.6Ohm to 9.1Ohm)?

A: The higher DC resistance increases power dissipation in the inductor. Calculate power loss using P = I²R. For a 290 mA circuit, the original part dissipates 0.303 W while the substitute dissipates 0.765 W. Thermal management and circuit performance must be re-evaluated for applications sensitive to inductor losses.

Q: Are there physical mounting differences between these components?

A: Both components use radial through-hole mounting with identical lead spacing. The RLB9012-332KL is physically smaller in diameter (9.00mm vs. 11.50mm) and height (12.20mm vs. 13.90mm), which may improve PCB layout density without affecting electrical performance or footprint compatibility.

Q: What compliance certifications apply to the substitute part?

A: The RLB9012-332KL is ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards. The original ELC11D332F is RoHS Compliant, confirming both parts meet hazardous substance restrictions.

Q: How do the inductance test frequencies differ between these parts?

A: The ELC11D332F is tested at 10 kHz while the RLB9012-332KL is tested at 1 kHz. Both use ±10% tolerance specifications. For applications requiring inductance stability across specific frequency ranges, circuit performance should be validated with the substitute part's frequency characteristics.