MBH7045C-470MB=P3 Equivalent & Substitute Parts

Part Overview

The MBH7045C-470MB=P3 is a 47 µH shielded drum core wirewound inductor manufactured by Murata Electronics, rated for 1.1 A continuous current with a maximum DC resistance of 180mOhm. This component is designed for surface mount applications in compact form factors and carries AEC-Q200 automotive qualification. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing production and maintenance applications.

Substiute Parts

MBH7045C-470MB=P3

Murata ElectronicsIn Stock: 793MBH7045C-470MB=P3 Datasheet

Current PartRFQ

CLF7045T-470M-D

TDK CorporationIn Stock: 2070CLF7045T-470M-D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CLF7045T-470M-D from TDK Corporation qualifies as a direct substitute based on the following critical parameters:

Matching Parameters:

• Inductance: 47 µH (identical)
• Inductance Tolerance: ±20% (identical)
• DC Resistance: 180 mOhm Max (identical)
• Core Material: Ferrite (identical)
• Type: Drum Core, Wirewound (identical)
• Shielding: Shielded (identical)
• Mounting Type: Surface Mount (identical)
• Package Type: Nonstandard (identical)
• Inductance Test Frequency: 100 kHz (identical)
• AEC-Q200 Rating: Yes (identical)
• RoHS Status: ROHS3 Compliant (identical)
• MSL Rating: 1 (Unlimited) (identical)

Enhanced Specifications:

• Current Rating: 1.2 A (vs. 1.1 A on original) — provides higher current capacity
• Current - Saturation: 1.3 A (vs. 1.2 A on original) — provides higher saturation margin
• Operating Temperature: -40°C ~ 150°C (specified vs. not specified on original)

The substitute part maintains all critical electrical and mechanical parameters while offering improved current handling and defined operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CLF7045T-470M-D is the qualified substitute for the obsolete MBH7045C-470MB=P3. Selection is based on:

Compliance & Certification: Both parts maintain AEC-Q200 automotive qualification and ROHS3 compliance, ensuring regulatory continuity in automotive and industrial applications.

Electrical Equivalence: Identical inductance (47 µH), tolerance (±20%), and DC resistance (180 mOhm Max) ensure direct functional replacement without circuit redesign.

Current Capacity: The TDK substitute provides 1.2 A continuous current rating versus 1.1 A on the original, with correspondingly higher saturation current (1.3 A vs. 1.2 A). This represents an improvement in thermal margin and reliability.

Mechanical Compatibility: Footprint dimensions are nearly identical (7.20mm length maintained; width variance of 0.30mm is negligible for nonstandard drum core packages). Height remains constant at 4.80mm maximum, ensuring PCB layout compatibility.

Product Availability: The substitute is in active production status with confirmed inventory (1987 pcs), whereas the original is obsolete. This ensures long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can CLF7045T-470M-D be used as a direct drop-in replacement for MBH7045C-470MB=P3?

A: Yes. Both parts share identical inductance (47 µH), tolerance (±20%), DC resistance (180 mOhm Max), core material (ferrite), shielding, and mounting type. The 0.30mm width difference (7.20mm vs. 6.90mm) is within acceptable tolerance for nonstandard drum core packages and does not affect PCB compatibility.

Q: What are the key substitution criteria for this inductor category?

A: Substitution is valid when the following parameters match: inductance value, inductance tolerance, DC resistance, core material, shielding type, and mounting method. Current rating and saturation current may be equal or higher on the substitute without affecting compatibility.

Q: Does the higher current rating on the TDK part affect circuit operation?

A: No. A higher current rating on the substitute part provides additional thermal margin and reliability. The circuit will operate identically, as the inductor will not be stressed beyond its original design limits.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the MBH7045C-470MB=P3 and CLF7045T-470M-D carry AEC-Q200 qualification, confirming suitability for automotive-grade applications.

Q: What is the significance of the operating temperature specification on the TDK part?

A: The TDK substitute specifies an operating temperature range of -40°C ~ 150°C, providing explicit thermal boundaries. The original part does not specify this parameter. Both parts are suitable for standard industrial and automotive temperature environments.

Q: Are there any packaging or handling differences between these parts?

A: Both parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity restrictions. The TDK part is available in Cut Tape (CT) and Digi-Reel packaging options, providing flexibility in procurement quantities.