CLF7045T-220M Equivalent & Substitute Parts

Part Overview

The CLF7045T-220M 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 82.8 mOhm. This surface mount component operates across the temperature range of -40°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The CLF7045T-220M is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

CLF7045T-220M

TDK CorporationIn Stock: 1702CLF7045T-220M Datasheet

Current PartRFQ

VLS6045EX-220M

TDK CorporationIn Stock: 12595VLS6045EX-220M Datasheet

MFR RecommendedRFQ

CDRR75NP-220MC

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

MFR RecommendedRFQ

CDRR7D45T125NP-220MC

Sumida America Components Inc.In Stock: 1147CDRR7D45T125NP-220MC Datasheet

MFR RecommendedRFQ

DR74-220-R

Eaton - Electronics DivisionIn Stock: 1653DR74-220-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLF7045T-220M are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Inductance value: 22 µH (±20% tolerance maintained)
• Current rating: minimum 1.7 A (CLF7045T-220M rated at 1.8 A)
• DC resistance: within acceptable range for thermal and efficiency performance (82–105 mOhm)
• Core material: Ferrite shielded construction
• Operating temperature range: minimum -40°C to 105°C

Mechanical Compatibility Criteria:

• Mounting type: Surface mount
• Package classification: Nonstandard (drum core form factor)
• Moisture sensitivity level: 1 (Unlimited)
• Test frequency: 100 kHz

All substitute parts listed maintain these core parameters, ensuring functional equivalence within the specified design constraints.

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-220M (TDK Corporation): This part is manufactured by the same supplier as the original CLF7045T-220M and maintains active product status. It provides higher saturation current (2.4 A) and improved current rating (1.9 A), making it suitable for applications requiring enhanced performance margin. The smaller footprint (6.00 × 6.00 mm) may require PCB layout verification. RoHS3 compliance is confirmed.

CDRR75NP-220MC (Sumida America Components Inc.): Active status with extended operating temperature range (-40°C to 125°C). DC resistance of 85 mOhm is comparable to the original specification. Current rating of 1.7 A is acceptable for applications not requiring the full 1.8 A margin. RoHS3 compliant. Footprint dimensions match the original part (6.90 × 6.90 mm, 4.80 mm height).

CDRR7D45T125NP-220MC (Sumida America Components Inc.): Active status with AEC-Q200 automotive qualification and extended temperature range (-40°C to 125°C). DC resistance of 82 mOhm closely matches the original specification. Current rating of 1.6 A is lower than the original; suitable for applications with reduced current requirements. RoHS compliant. Slightly larger footprint (7.20 × 7.20 mm, 5.10 mm height).

DR74-220-R (Eaton - Electronics Division): Active status with extended operating temperature range (-40°C to 125°C). Current rating of 1.75 A and DC resistance of 92.5 mOhm provide acceptable performance margins. RoHS3 compliant. Larger footprint (7.60 × 7.60 mm, 4.35 mm height) requires PCB layout consideration.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-220M be used as a direct replacement for CLF7045T-220M?

A: VLS6045EX-220M is electrically compatible, maintaining 22 µH inductance, ±20% tolerance, and equivalent operating temperature range. However, the smaller footprint (6.00 × 6.00 mm versus 7.20 × 6.90 mm) requires PCB layout verification to confirm pad spacing compatibility.

Q: What is the primary difference between CDRR75NP-220MC and CDRR7D45T125NP-220MC?

A: Both are Sumida products with 22 µH inductance and ±20% tolerance. CDRR75NP-220MC has a current rating of 1.7 A and saturation current of 960 mA. CDRR7D45T125NP-220MC has a current rating of 1.6 A, saturation current of 1.36 A, and includes AEC-Q200 automotive qualification. The latter has a larger footprint (7.20 × 7.20 mm versus 6.90 × 6.90 mm).

Q: Is the CLF7045T-220M operating temperature range a limiting factor for substitution?

A: The CLF7045T-220M operates from -40°C to 105°C. All substitute parts maintain the lower limit of -40°C. VLS6045EX-220M maintains the 105°C upper limit. CDRR75NP-220MC, CDRR7D45T125NP-220MC, and DR74-220-R extend the upper limit to 125°C, providing additional thermal margin for applications operating near the original specification limit.

Q: How does DC resistance affect part selection?

A: DC resistance directly impacts thermal dissipation and power loss in the inductor. The CLF7045T-220M specifies 82.8 mOhm maximum. Substitute parts range from 82 mOhm to 105 mOhm. Parts with DCR closer to 82 mOhm (CDRR7D45T125NP-220MC at 82 mOhm, CDRR75NP-220MC at 85 mOhm) provide thermal performance most similar to the original. Higher DCR values (VLS6045EX-220M at 105 mOhm, DR74-220-R at 92.5 mOhm) result in increased power dissipation and should be evaluated for thermal impact in the application circuit.

Q: What packaging formats are available for these substitute parts?

A: VLS6045EX-220M is supplied in Cut Tape (CT) and Digi-Reel format. CDRR75NP-220MC and CDRR7D45T125NP-220MC are supplied in Tape & Reel (TR) format. DR74-220-R is supplied in Cut Tape (CT) and Digi-Reel format. Packaging selection should align with production volume and assembly process requirements.

Q: Are all substitute parts RoHS compliant?

A: VLS6045EX-220M is RoHS3 compliant. CDRR75NP-220MC is RoHS3 compliant. CDRR7D45T125NP-220MC is RoHS compliant. DR74-220-R is RoHS3 compliant. All parts meet current RoHS requirements for new designs.