CLF7045T-220M-CA Equivalent & Substitute Parts

Part Overview

The CLF7045T-220M-CA is a 22 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 1.8 A continuous current with a maximum DC resistance of 82.8mOhm. This surface mount component is designed for applications requiring stable inductance performance across industrial temperature ranges (-40°C to 105°C) and meets AEC-Q200 automotive qualification standards.

The product is classified as obsolete, making equivalent substitute parts necessary for ongoing production support and design continuity. Suitable alternatives maintain the same inductance value, core material, shielding characteristics, and operating temperature range while accommodating minor variations in current rating and DC resistance within acceptable engineering tolerances.

Substiute Parts

CLF7045T-220M-CA

TDK CorporationIn Stock: 884CLF7045T-220M-CA Datasheet

Current PartRFQ

VLS6045EX-220M-CA

TDK CorporationIn Stock: 2324VLS6045EX-220M-CA Datasheet

MFR RecommendedRFQ

CDRR75NP-220MC

Sumida America Components Inc.In Stock: 762CDRR75NP-220MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLF7045T-220M-CA are qualified based on the following criteria:

Primary Matching Parameters:

• Inductance value: 22 µH (exact match required)
• Inductance tolerance: ±20% (identical specification)
• Core material: Ferrite (maintains magnetic performance characteristics)
• Shielding: Shielded (electromagnetic containment requirement)
• Mounting type: Surface mount (PCB assembly compatibility)
• Test frequency: 100 kHz (measurement standard consistency)

Allowable Variation Parameters:

• Current rating: Substitute parts must meet or exceed 1.8 A minimum
• DC resistance: Substitute parts with DCR ≤ 85mOhm are acceptable (within 2.2% of original specification)
• Operating temperature: Minimum range -40°C to 105°C; extended upper temperature limits are acceptable
• Package dimensions: Nonstandard form factor; physical footprint variations are permissible provided surface mount compatibility is maintained
• Saturation current: Substitute parts with Isat ≥ 1.9 A are acceptable

The two qualified substitutes (VLS6045EX-220M-CA and CDRR75NP-220MC) meet all primary matching parameters and fall within acceptable variation limits for current rating and DC resistance.

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-220M-CA (TDK Corporation): This substitute maintains identical inductance, tolerance, and operating temperature specifications as the main part. Both components are manufactured by TDK Corporation, ensuring consistency in design philosophy and quality standards. The VLS6045EX-220M-CA provides higher saturation current (2.4 A vs. 1.9 A), offering improved headroom for transient current conditions. However, the DC resistance is elevated to 136.5mOhm, representing a 64.6% increase over the original specification. This part is classified as "Not For New Designs," indicating limited long-term availability. ROHS3 compliance is confirmed.

CDRR75NP-220MC (Sumida America Components Inc.): This substitute is the only part with active product status, providing the best long-term availability and supply chain stability. The DC resistance (85mOhm) closely matches the original specification (82.8mOhm), with only a 2.7% variance. The current rating is 1.7 A, which is 5.6% below the original 1.8 A specification; however, the saturation current of 960mA indicates this part is designed for lower transient stress applications. Operating temperature range extends to 125°C, providing additional thermal margin. ROHS3 compliance is confirmed.

For applications where DC resistance minimization is critical, CDRR75NP-220MC is the preferred choice. For applications requiring higher saturation current margin, VLS6045EX-220M-CA is suitable despite elevated DCR. Both substitutes are qualified for surface mount assembly and maintain ferrite core shielding characteristics.

Frequently Asked Questions (FAQ)

Q: Can CLF7045T-220M-CA be directly replaced with VLS6045EX-220M-CA?

A: Yes, both parts share identical inductance (22 µH), tolerance (±20%), core material (ferrite), shielding, and operating temperature range (-40°C to 105°C). The primary difference is DC resistance: VLS6045EX-220M-CA is 136.5mOhm versus 82.8mOhm for the original. This 64.6% increase in resistance will result in higher power dissipation in the inductor. Substitution is valid only if circuit design tolerates this increased DCR.

Q: Can CLF7045T-220M-CA be directly replaced with CDRR75NP-220MC?

A: Yes, both parts share identical inductance (22 µH), tolerance (±20%), core material (ferrite), shielding, and test frequency (100 kHz). DC resistance is nearly identical (85mOhm vs. 82.8mOhm, a 2.7% difference). The current rating is 1.7 A versus 1.8 A; substitution is valid for applications where peak current does not exceed 1.7 A. CDRR75NP-220MC offers the advantage of active product status and extended operating temperature to 125°C.

Q: What is the impact of different DC resistance values on circuit performance?

A: DC resistance directly affects power dissipation (P = I²R) and voltage drop across the inductor. Higher DCR increases heat generation and reduces circuit efficiency. For the CLF7045T-220M-CA at 1.8 A, the original DCR of 82.8mOhm produces 0.268 W dissipation. The VLS6045EX-220M-CA at the same current produces 0.442 W, a 65% increase. The CDRR75NP-220MC produces 0.260 W, nearly identical to the original. Circuit thermal design and efficiency requirements determine acceptable DCR variation.

Q: Are all three parts compatible with the same PCB footprint?

A: All three parts are surface mount inductors with nonstandard package dimensions. Physical dimensions vary: CLF7045T-220M-CA is 7.20mm × 6.90mm × 4.80mm; VLS6045EX-220M-CA is 6.00mm × 6.00mm × 4.50mm; CDRR75NP-220MC is 6.90mm × 6.90mm × 4.80mm. PCB footprint compatibility must be verified against the specific landing pattern used in the original design. Smaller components may fit existing footprints, but larger components require PCB redesign.

Q: What certifications and compliance standards apply to these parts?

A: The original CLF7045T-220M-CA carries AEC-Q200 automotive qualification. VLS6045EX-220M-CA and CDRR75NP-220MC both confirm ROHS3 compliance. All three parts are MSL 1 (Unlimited moisture sensitivity), REACH Unaffected, and classified under ECCN EAR99. For applications requiring AEC-Q200 certification, only the original part meets this requirement; substitutes should be evaluated against specific automotive qualification requirements.

Q: Why is the original part classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production and will not accept new orders. The VLS6045EX-220M-CA is classified as "Not For New Designs," suggesting limited remaining inventory. The CDRR75NP-220MC maintains active status, indicating ongoing production and availability. For new designs or long-term production requirements, CDRR75NP-220MC is the recommended choice to ensure supply chain continuity.