LGJ7045TC-331M-H Equivalent & Substitute Parts

Part Overview

The LGJ7045TC-331M-H is a 330 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 420 mA continuous current with 1.03Ohm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part meets AEC-Q200 automotive qualification standards and operates across -40°C to 125°C temperature range with ROHS3 compliance.

Substiute Parts

LGJ7045TC-331M-H

TDK CorporationIn Stock: 1120LGJ7045TC-331M-H Datasheet

Current PartRFQ

CLF7045NIT-331M-D

TDK CorporationIn Stock: 1675CLF7045NIT-331M-D Datasheet

DirectRFQ

CDRR75NP-331MC

Sumida America Components Inc.In Stock: 6771CDRR75NP-331MC Datasheet

MFR RecommendedRFQ

CDRR7D45T125NP-331MC

Sumida America Components Inc.In Stock: 2996CDRR7D45T125NP-331MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LGJ7045TC-331M-H are qualified based on the following electrical and mechanical parameters:

• Inductance Value: 330 µH (exact match required)
• Inductance Tolerance: ±20% (matching tolerance band)
• Current Rating: Minimum 420 mA (equal or greater)
• DC Resistance: Within acceptable range for circuit performance (0.96Ohm to 1.15Ohm)
• Core Material: Ferrite shielded construction
• Mounting Type: Surface mount nonstandard package
• Operating Temperature Range: Minimum -40°C ~ 125°C coverage
• Compliance: ROHS3 and AEC-Q200 certification preferred

All substitute parts listed maintain the same inductance value, shielding configuration, and ferrite core material. Current rating and saturation current specifications are equal to or exceed the original part requirements.

Parameter Comparison

Engineering Selection Recommendations

CLF7045NIT-331M-D (TDK Corporation) is the primary substitute option. This part maintains TDK manufacturer continuity, offers improved current rating (500 mA vs. 420 mA), lower DC resistance (960 mOhm vs. 1.03Ohm), and extended operating temperature range (-55°C ~ 150°C). AEC-Q200 certification and active product status ensure long-term availability and supply chain stability.

CDRR75NP-331MC (Sumida America Components Inc.) provides an alternative from a qualified secondary manufacturer. Current rating of 450 mA and DC resistance of 1.05Ohm closely match original specifications. Operating temperature range and ROHS3 compliance align with application requirements. This option is suitable when TDK sourcing is constrained.

CDRR7D45T125NP-331MC (Sumida America Components Inc.) serves as a tertiary option with 440 mA current rating and 1.15Ohm DC resistance. AEC-Q200 certification and active status support automotive and industrial applications. Slightly elevated DC resistance requires circuit performance verification in power-sensitive designs.

All three substitute parts are active products with established supply availability, contrasting with the obsolete status of the original LGJ7045TC-331M-H.

Frequently Asked Questions (FAQ)

Q: Can CLF7045NIT-331M-D directly replace LGJ7045TC-331M-H without circuit modification?

A: Yes. Both parts share identical inductance (330 µH), tolerance (±20%), ferrite shielded core construction, and operating temperature range (-40°C ~ 125°C). The CLF7045NIT-331M-D provides superior electrical performance with higher current rating and lower DC resistance, making it a direct functional replacement.

Q: What is the significance of DC resistance differences between substitute parts?

A: DC resistance affects power dissipation and circuit efficiency. The LGJ7045TC-331M-H specifies 1.03Ohm. CLF7045NIT-331M-D (960 mOhm) reduces losses, while CDRR7D45T125NP-331MC (1.15Ohm) increases losses. For applications with tight thermal budgets or high current operation, lower DCR is preferred. For general-purpose circuits, all three options remain within acceptable performance margins.

Q: Are there package or footprint differences between these parts?

A: All parts are surface mount nonstandard packages with similar dimensions. LGJ7045TC-331M-H measures 7.20mm × 6.90mm × 4.50mm. CLF7045NIT-331M-D is 7.40mm × 7.00mm × 4.80mm. CDRR75NP-331MC is 6.90mm × 6.90mm × 4.80mm. CDRR7D45T125NP-331MC is 7.20mm × 7.20mm × 5.10mm. Verify PCB layout compatibility before final selection.

Q: Which substitute part offers the best long-term supply availability?

A: CLF7045NIT-331M-D carries active product status from TDK Corporation with established distribution channels. Both Sumida parts (CDRR75NP-331MC and CDRR7D45T125NP-331MC) are also active with documented inventory levels. All three options provide superior supply continuity compared to the obsolete LGJ7045TC-331M-H.

Q: Do all substitute parts meet automotive qualification standards?

A: CLF7045NIT-331M-D and CDRR7D45T125NP-331MC carry AEC-Q200 certification. CDRR75NP-331MC does not list AEC-Q200 certification. For automotive applications requiring AEC-Q200 compliance, CLF7045NIT-331M-D is the recommended choice.