ELC-18B151L Equivalent & Substitute Parts

Part Overview

The ELC-18B151L is a 150 µH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components. This through-hole component is rated for 2.7 A continuous current with a DC resistance of 72mOhm and operates at 10 kHz test frequency. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Suitable alternatives must maintain the same inductance value, current rating, and mounting configuration while meeting modern compliance standards.

Substiute Parts

ELC-18B151L

Panasonic Electronic ComponentsIn Stock: 1154ELC-18B151L Datasheet

Current PartRFQ

AIUR-15-151K

Abracon LLCIn Stock: 2029AIUR-15-151K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ELC-18B151L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance: 150 µH (±10% tolerance)
• Current Rating: 2.7 A minimum
• Core Type: Ferrite, unshielded drum core
• Mounting Type: Through hole
• Package Configuration: Radial, vertical cylinder (open)

Acceptable Variation Parameters:

• DC Resistance (DCR): Maximum 110mOhm (original part: 72mOhm). Higher DCR is acceptable within thermal and efficiency constraints of the application.
• Physical Dimensions: Minor variations in diameter and height are acceptable provided the component fits the PCB layout and mounting footprint.
• Test Frequency: Inductance may be tested at different frequencies (1 kHz vs. 10 kHz) provided the inductance value at the application frequency remains within specification.

The AIUR-15-151K from Abracon LLC meets all critical matching parameters and is classified as an active product with current availability.

Parameter Comparison

Engineering Selection Recommendations

The AIUR-15-151K is the qualified substitute for the ELC-18B151L based on the following engineering criteria:

Compliance & Certification: Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with modern manufacturing and storage requirements.

Product Status: The ELC-18B151L is obsolete, while the AIUR-15-151K is an active product with confirmed inventory availability (1963 Pcs in stock). This ensures long-term supply chain continuity for production and design updates.

Electrical Parameters: The AIUR-15-151K maintains identical inductance (150 µH), tolerance (±10%), and current rating (2.7 A). The DCR increase from 72mOhm to 110mOhm maximum represents a 38mOhm variance. This variance must be evaluated against the specific thermal and efficiency requirements of the application circuit.

Mechanical Compatibility: The AIUR-15-151K has a smaller footprint (0.709" diameter, 0.787" height) compared to the original (0.787" diameter, 1.063" height). PCB layout verification is required to confirm the substitute fits the existing mounting holes and clearance requirements.

Frequently Asked Questions (FAQ)

Q: Can the AIUR-15-151K be used as a direct drop-in replacement for the ELC-18B151L?

A: The AIUR-15-151K is electrically equivalent for the same inductance and current rating. However, physical dimensions differ: the substitute is smaller in both diameter and height. Verify that the PCB footprint and mounting holes accommodate the smaller component before implementation.

Q: What is the significance of the DCR difference (72mOhm vs. 110mOhm)?

A: The AIUR-15-151K has a higher DC resistance by 38mOhm. In applications where the inductor carries continuous current, this increases resistive losses and heat generation. Calculate the power dissipation (P = I²R) at the 2.7 A rating to determine if thermal performance remains acceptable for your circuit.

Q: Are both components RoHS compliant?

A: Yes. Both the ELC-18B151L and AIUR-15-151K are ROHS3 compliant and carry MSL 1 (Unlimited) ratings, meeting current environmental and manufacturing standards.

Q: Why is the ELC-18B151L listed as obsolete?

A: The ELC-18B151L is an obsolete product from Panasonic's 18B series. The AIUR-15-151K from Abracon's active AIUR-15 series provides equivalent electrical performance with current manufacturing support and availability.

Q: What parameters must match exactly for substitution?

A: Inductance value (150 µH), tolerance (±10%), current rating (2.7 A), core type (ferrite unshielded drum core), and mounting configuration (through-hole radial vertical cylinder) must match exactly. DC resistance and physical dimensions may vary within acceptable engineering limits.

Q: How do I verify compatibility with my circuit design?

A: Confirm that the inductance value, current rating, and DCR are suitable for your application's operating frequency and thermal environment. Verify that the physical dimensions fit your PCB layout and mounting requirements. Cross-reference the test frequency (1 kHz for AIUR-15-151K vs. 10 kHz for ELC-18B151L) if inductance behavior at specific frequencies is critical.