ELL-CTV151M Equivalent & Substitute Parts

Part Overview

The ELL-CTV151M is a 150 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Rated for 1 A with a DC resistance of 220mOhm, this surface mount component is designed for applications requiring fixed inductance in compact form factors. The part is classified as obsolete, necessitating identification of active equivalent components that maintain functional compatibility while meeting current supply chain requirements.

Key Parameters

Parameter	Value
Inductance	150 µH
Current Rating	1 A
DC Resistance (DCR)	220mOhm
Tolerance	±20%
Core Type	Ferrite, Shielded Drum Core
Mounting Type	Surface Mount
Package Type	Nonstandard
Size	12.00mm x 12.00mm x 4.50mm (Max Height)
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-CTV151M is determined by the following critical parameters:

Inductance Value: Must be 150 µH (matched exactly)
Core Material & Shielding: Ferrite, shielded drum core construction required
Current Rating: Minimum 1 A; higher ratings are acceptable for derating applications
DC Resistance: Maximum 260mOhm; values within this range maintain acceptable power dissipation characteristics
Tolerance: ±10% or tighter acceptable; ±20% tolerance is the baseline
Mounting Type: Surface mount configuration required
RoHS Compliance: ROHS3 Compliant status required for regulatory alignment

The SRR1260-151K from Bourns Inc. meets all substitution criteria with improved electrical performance characteristics and active product status.

Parameter Comparison

Parameter	ELL-CTV151M (Panasonic)	SRR1260-151K (Bourns)	Compatibility
Inductance	150 µH	150 µH	Matched
Current Rating (Amps)	1 A	1.55 A	Compatible (higher rating)
DC Resistance (DCR)	220mOhm	260mOhm Max	Compatible (within tolerance)
Tolerance	±20%	±10%	Compatible (tighter tolerance)
Core Type	Ferrite, Shielded Drum Core	Ferrite, Shielded Drum Core	Matched
Mounting Type	Surface Mount	Surface Mount	Matched
Package Type	Nonstandard	Nonstandard	Matched
Size (L x W)	12.00mm x 12.00mm	12.50mm x 12.50mm	Compatible (minimal dimensional variance)
Height - Seated (Max)	4.50mm	6.50mm	Compatible (within typical PCB clearance)
Product Status	Obsolete	Active	Substitute is active
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant	Matched
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Matched

Engineering Selection Recommendations

The SRR1260-151K is the qualified substitute for the obsolete ELL-CTV151M based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical inductance values at 150 µH with ferrite shielded drum core construction. The SRR1260-151K provides superior current handling at 1.55 A versus the original 1 A rating, enabling safe operation in existing circuit topologies without derating concerns. DC resistance variance (260mOhm max versus 220mOhm) remains within acceptable power dissipation limits for typical inductor applications.

Regulatory & Compliance Alignment: Both parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity), ensuring compatibility with modern manufacturing and storage requirements. The substitute part carries active product status with established supply chain availability.

Physical Integration: Dimensional differences are minimal and non-critical. The SRR1260-151K footprint (12.50mm x 12.50mm) represents a 4% increase in lateral dimensions with a 2mm increase in seated height. These variations are accommodated within standard PCB design tolerances for surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the SRR1260-151K be used as a direct replacement for the ELL-CTV151M?

A: Yes. Both components share identical inductance values, core material, shielding configuration, and mounting type. The substitute part meets or exceeds all electrical specifications of the original component.

Q: What is the significance of the higher current rating on the SRR1260-151K?

A: The 1.55 A rating on the Bourns component provides additional design margin compared to the 1 A specification of the Panasonic part. This allows the substitute to operate safely in circuits originally designed for the ELL-CTV151M without thermal or saturation concerns.

Q: Are there dimensional compatibility issues with the SRR1260-151K?

A: The SRR1260-151K is slightly larger (12.50mm x 12.50mm versus 12.00mm x 12.00mm) and taller (6.50mm versus 4.50mm seated height). PCB layouts designed for the original component must accommodate these dimensional increases. Verify clearance for adjacent components and solder mask openings before implementation.

Q: Does the tolerance difference affect circuit performance?

A: The SRR1260-151K features ±10% tolerance compared to the ±20% tolerance of the ELL-CTV151M. This represents improved inductance accuracy and may enhance circuit stability in applications sensitive to inductance variation. No negative performance impact is introduced by this specification improvement.

Q: Are both parts RoHS compliant?

A: Yes. Both the ELL-CTV151M and SRR1260-151K are ROHS3 compliant with MSL Level 1 rating, meeting current environmental and manufacturing standards.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message