VLF10045T-3R3N6R9 Equivalent & Substitute Parts

Part Overview

The VLF10045T-3R3N6R9 is a 3.3 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 6.9 A continuous current with a maximum DC resistance of 11.6 mOhm. This surface mount component operates across the temperature range of -40°C to 105°C and is designed for applications requiring compact, shielded inductive filtering in power conversion and signal conditioning circuits.

The product status is listed as Obsolete, necessitating identification of functionally equivalent alternatives that maintain the same electrical performance characteristics while offering current availability and extended product lifecycles.

Substiute Parts

VLF10045T-3R3N6R9

TDK CorporationIn Stock: 47919VLF10045T-3R3N6R9 Datasheet

Current PartRFQ

CLF10060NIT-3R3N-D

TDK CorporationIn Stock: 11110CLF10060NIT-3R3N-D Datasheet

MFR RecommendedRFQ

1274AS-H-3R3N=P3

Murata ElectronicsIn Stock: 7741274AS-H-3R3N=P3 Datasheet

MFR RecommendedRFQ

CDRR127NP-3R3NC

Sumida America Components Inc.In Stock: 1057CDRR127NP-3R3NC Datasheet

MFR RecommendedRFQ

DR1050-3R3-R

Eaton - Electronics DivisionIn Stock: 1777DR1050-3R3-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLF10045T-3R3N6R9 is determined by strict equivalence across the following critical parameters:

• Inductance Value: 3.3 µH at 100 kHz test frequency with ±30% tolerance
• Shielding Configuration: Shielded drum core construction to maintain electromagnetic isolation
• Core Material: Ferrite core composition
• Mounting Technology: Surface mount package for PCB integration
• DC Resistance: Maximum allowable DCR to ensure thermal performance and efficiency
• Current Handling: Continuous current rating and saturation current capability
• Temperature Operating Range: Minimum -40°C to 105°C envelope
• Moisture Sensitivity: MSL 1 classification

All four substitute parts listed maintain the 3.3 µH inductance value, ferrite shielded construction, and surface mount configuration. Variations in current ratings, DCR specifications, physical dimensions, and temperature ranges are documented to enable selection based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

CLF10060NIT-3R3N-D (TDK Corporation): This part maintains TDK manufacturer continuity and is rated for AEC-Q200 automotive qualification. The extended temperature range of -55°C to 150°C provides thermal margin beyond the original specification. Current rating of 5.8 A is lower than the original 6.9 A; selection is appropriate only for applications where the 5.8 A continuous rating is sufficient. Product status is Last Time Buy, indicating limited future availability.

1274AS-H-3R3N=P3 (Murata Electronics): This part offers the highest continuous current rating at 7.4 A and saturation current of 10.8 A, providing performance margin above the original specification. Active product status ensures long-term availability. DC resistance of 11.4 mOhm is within specification. Operating temperature range is not specified in the provided data.

CDRR127NP-3R3NC (Sumida America Components Inc.): This part delivers the highest current rating at 8.2 A continuous with 11 A saturation current and the lowest DC resistance at 9.6 mOhm, resulting in superior thermal performance. AEC-Q200 rating is provided. Operating temperature range of -40°C to 125°C exceeds the original specification. Physical dimensions are larger (12.50mm x 12.50mm x 7.85mm) compared to the original (10.00mm x 9.70mm x 4.50mm), requiring PCB layout verification.

DR1050-3R3-R (Eaton - Electronics Division): This part provides balanced performance with 6.5 A continuous current rating and 10 mOhm DC resistance. Active product status ensures availability. Operating temperature range of -40°C to 125°C and RoHS3 compliance are provided. Physical dimensions (10.50mm x 10.30mm x 5.00mm) are comparable to the original.

Frequently Asked Questions (FAQ)

Q: Can CLF10060NIT-3R3N-D be used as a direct replacement if my circuit requires 6.9 A continuous current?

A: No. The CLF10060NIT-3R3N-D is rated for 5.8 A continuous current, which is 0.84 A below the original specification. Use of this part in applications requiring 6.9 A operation will result in thermal stress and potential component failure. Select this part only if your actual circuit current requirement is 5.8 A or lower.

Q: What is the impact of the larger physical dimensions of CDRR127NP-3R3NC?

A: The CDRR127NP-3R3NC measures 12.50mm x 12.50mm x 7.85mm compared to the original 10.00mm x 9.70mm x 4.50mm. The increased footprint and height require verification that the PCB layout and component clearances accommodate the larger package. Thermal management may improve due to increased surface area.

Q: Are all substitute parts RoHS3 compliant?

A: RoHS3 compliance is explicitly stated for CLF10060NIT-3R3N-D, CDRR127NP-3R3NC, and DR1050-3R3-R. Compliance status for 1274AS-H-3R3N=P3 is listed as ROHS3 Compliant. All four substitutes meet RoHS3 requirements.

Q: Which substitute part offers the best thermal performance?

A: CDRR127NP-3R3NC provides the lowest DC resistance at 9.6 mOhm maximum, resulting in the lowest resistive heating. DR1050-3R3-R offers 10 mOhm, and CLF10060NIT-3R3N-D provides 11.05 mOhm. Lower DC resistance reduces power dissipation and operating temperature.

Q: Can I use 1274AS-H-3R3N=P3 if the operating temperature range is not specified?

A: The operating temperature range is not provided in the available data for 1274AS-H-3R3N=P3. If your application requires operation outside the original -40°C to 105°C range, contact the manufacturer to confirm temperature specifications before design implementation.

Q: What is the significance of AEC-Q200 rating on CLF10060NIT-3R3N-D and CDRR127NP-3R3NC?

A: AEC-Q200 is an automotive qualification standard indicating the part has undergone reliability testing for automotive applications. This certification is relevant only if your application requires automotive-grade components. Non-automotive applications do not require this certification.

Q: Is the Last Time Buy status of CLF10060NIT-3R3N-D a concern?

A: Last Time Buy status indicates the manufacturer will discontinue production after a specified date. Existing inventory may be available for a limited period. For new designs or long-term production requirements, select parts with Active status: 1274AS-H-3R3N=P3, CDRR127NP-3R3NC, or DR1050-3R3-R.