ELC-16B331L Equivalent & Substitute Parts

Part Overview

The ELC-16B331L is a 330 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.5 A continuous current with 200mOhm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain the same inductance value, voltage rating capability, and through-hole radial mounting configuration while accommodating minor variations in current rating and DC resistance within acceptable design tolerances.

Substiute Parts

ELC-16B331L

Panasonic Electronic ComponentsIn Stock: 1054ELC-16B331L Datasheet

Current PartRFQ

DC630R-334K

API Delevan Inc.In Stock: 1535DC630R-334K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-16B331L is determined by strict adherence to the following parameters:

Critical Matching Parameters:

• Inductance value: 330 µH (exact match required)
• Mounting type: Through Hole (radial configuration)
• Package configuration: Radial, Vertical Cylinder
• Shielding classification: Unshielded
• Diameter: 0.630" (16.00mm)

Acceptable Variation Parameters:

• Current Rating: Substitute must equal or exceed 1.5 A
• DC Resistance: Substitute may exceed 200mOhm provided circuit design accommodates increased power dissipation
• Height: Substitute height up to 0.906" (23.00mm) maximum to ensure PCB clearance compatibility
• Tolerance: ±10% tolerance maintained across all substitutes

Compliance Requirements:

• RoHS3 compliance required for regulatory alignment with original part

The DC630R-334K from API Delevan Inc. satisfies all critical matching parameters and acceptable variation criteria, qualifying it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The DC630R-334K qualifies as a direct substitute for the obsolete ELC-16B331L based on the following engineering criteria:

Functional Equivalence: Both components maintain identical inductance (330 µH), tolerance (±10%), shielding classification (unshielded), and through-hole radial mounting configuration. The 0.630" diameter and compatible vertical cylinder package ensure PCB footprint compatibility without layout modification.

Current Capacity: The DC630R-334K current rating of 1.72 A exceeds the ELC-16B331L requirement of 1.5 A, providing 14.7% design margin. This enhancement improves reliability in applications approaching the original current specification.

DC Resistance Consideration: The DC630R-334K exhibits 315 mOhm maximum DC resistance compared to the ELC-16B331L 200 mOhm specification. This 57.5% increase results in proportionally higher I²R power dissipation. Circuit designs must verify that thermal management and power budget accommodate this increase. For applications with strict power dissipation constraints, thermal analysis is required before implementation.

Regulatory and Compliance Status: Both components maintain ROHS3 compliance, ensuring regulatory alignment. The DC630R-334K active product status guarantees long-term availability and supply chain continuity, eliminating obsolescence risk associated with the ELC-16B331L.

Physical Compatibility: The DC630R-334K seated height of 0.830" (21.08mm) is 8.4% shorter than the ELC-16B331L maximum height of 0.906" (23.00mm), providing improved PCB clearance and assembly flexibility.

Frequently Asked Questions (FAQ)

Q: Can the DC630R-334K be used as a direct drop-in replacement for the ELC-16B331L?

A: Yes, for applications where the increased DC resistance (315 mOhm vs. 200 mOhm) does not exceed thermal dissipation limits. The identical inductance value, tolerance, shielding, mounting type, and physical footprint ensure electrical and mechanical compatibility. Verify that the additional power dissipation from the higher DC resistance is acceptable within your circuit's thermal budget.

Q: What is the impact of the 115 mOhm increase in DC resistance?

A: At the rated current of 1.5 A, the additional power dissipation is approximately 0.34 W (I² × ΔR = 1.5² × 0.115). For applications operating continuously at or near rated current, this increase may require thermal management verification. Applications operating at lower currents experience proportionally reduced impact.

Q: Are there any PCB layout considerations when substituting the DC630R-334K?

A: The DC630R-334K is 8.4% shorter than the ELC-16B331L, improving clearance margins. No layout modification is required. The identical 0.630" diameter and radial through-hole configuration ensure direct footprint compatibility without repositioning or trace rerouting.

Q: Does the ferrite drum core construction of the DC630R-334K affect circuit performance?

A: The ferrite core in the DC630R-334K provides the specified 330 µH inductance at 10 kHz measurement frequency, matching the ELC-16B331L electrical specification. Core material differences do not affect the primary electrical parameters (inductance, tolerance, current rating) relevant to substitution. Frequency-dependent characteristics (Q factor, self-resonant frequency) are not specified for either component, so comparative analysis is not applicable.

Q: Is RoHS3 compliance maintained with the DC630R-334K?

A: Yes. Both the ELC-16B331L and DC630R-334K are ROHS3 compliant, ensuring regulatory alignment for applications subject to RoHS directives.

Q: What is the availability advantage of the DC630R-334K?

A: The DC630R-334K is classified as active product status with 1465 units in stock, compared to the ELC-16B331L obsolete status. This ensures long-term supply chain continuity and eliminates procurement risk associated with end-of-life components.