ELL-CTV101M Equivalent & Substitute Parts

Part Overview

The ELL-CTV101M is a 100 µH shielded drum core, wirewound inductor manufactured by Panasonic Electronic Components. Designed for surface mount applications, this component delivers 1.2 A current rating with 150mOhm DC resistance in a compact 12.00mm × 12.00mm footprint. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements.

Substiute Parts

ELL-CTV101M

Panasonic Electronic ComponentsIn Stock: 739ELL-CTV101M Datasheet

Current PartRFQ

74477020

Würth ElektronikIn Stock: 924874477020 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-CTV101M is determined by the following critical parameters:

• Inductance Value: 100 µH (exact match required)
• Inductance Tolerance: ±20% (matching tolerance band)
• Core Type & Shielding: Ferrite core with shielding (electromagnetic performance consistency)
• Mounting Type: Surface mount (PCB assembly compatibility)
• Package Footprint: 12.00mm × 12.00mm (physical placement compatibility)
• Current Rating: Minimum 1.2 A (electrical load capacity)
• DC Resistance: Acceptable range based on circuit design margins

The Würth Elektronik 74477020 qualifies as a substitute based on matching inductance, tolerance, core material, shielding, mounting type, and footprint dimensions. The substitute exhibits higher current rating (2.2 A) and lower DC resistance relative to saturation current, making it suitable for applications where the original part is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The 74477020 (Würth Elektronik) is the qualified substitute for the obsolete ELL-CTV101M. Selection is based on the following engineering criteria:

• Active Product Status: The substitute is currently in active production, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both components maintain ROHS3 compliance, satisfying environmental and regulatory requirements.
• Electrical Equivalence: Matching inductance value (100 µH) and tolerance (±20%) ensure functional compatibility in circuit applications.
• Physical Compatibility: Identical footprint dimensions (12.00mm × 12.00mm) and surface mount packaging enable direct PCB layout reuse.
• Enhanced Specifications: The substitute provides higher current rating (2.2 A vs. 1.2 A) and defined saturation current (2.4 A), offering improved performance margins for existing designs.
• Quality Certification: AEC-Q200 rating on the substitute indicates automotive-grade reliability qualification.

The increased height (8.00mm vs. 4.50mm) and higher DC resistance (220mOhm Max vs. 150mOhm) must be evaluated within specific circuit design constraints. Applications with strict height limitations or precise DC resistance requirements require circuit-level validation.

Frequently Asked Questions (FAQ)

Q: Can the 74477020 be used as a direct replacement for the ELL-CTV101M?

A: Yes, the 74477020 qualifies as a substitute based on matching inductance (100 µH), tolerance (±20%), core material (ferrite), shielding, mounting type (surface mount), and footprint (12.00mm × 12.00mm). The substitute is active and ROHS3 compliant.

Q: What are the key differences between these components?

A: The primary differences are product status (obsolete vs. active), current rating (1.2 A vs. 2.2 A), DC resistance (150mOhm vs. 220mOhm Max), component height (4.50mm vs. 8.00mm), and additional specifications provided for the substitute (saturation current, operating temperature range, self-resonant frequency, AEC-Q200 rating).

Q: Does the increased height of the 74477020 affect PCB assembly?

A: The substitute is 4.60mm taller (8.00mm vs. 4.50mm). PCB designs with height constraints or clearance limitations must verify that the increased height does not conflict with adjacent components, shielding structures, or enclosure dimensions.

Q: How does the higher DC resistance of the substitute impact circuit performance?

A: The 74477020 exhibits 220mOhm maximum DC resistance compared to 150mOhm for the original part. This 70mOhm difference increases power dissipation and voltage drop across the inductor. Circuit designs sensitive to DC resistance must perform thermal and voltage analysis to confirm acceptable performance margins.

Q: Are both components suitable for automotive applications?

A: The 74477020 carries AEC-Q200 automotive-grade qualification. The ELL-CTV101M does not specify automotive certification. For automotive applications, the substitute provides documented reliability qualification.

Q: What is the moisture sensitivity level for both components?

A: Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.