MBKK2012T3R3M Equivalent & Substitute Parts

Part Overview

The MBKK2012T3R3M is a 3.3 µH shielded drum core wirewound inductor manufactured by Taiyo Yuden, designed for surface mount applications in the 0805 (2012 Metric) package. This component is rated for 650 mA continuous current with a maximum DC resistance of 500 mOhm and operates across the temperature range of -40°C to 105°C. The part carries a "Not For New Designs" status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this inductor specification remains required.

Substiute Parts

MBKK2012T3R3M

Taiyo YudenIn Stock: 17119MBKK2012T3R3M Datasheet

Current PartRFQ

LSBHB2012KKT3R3M

Taiyo YudenIn Stock: 912LSBHB2012KKT3R3M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MBKK2012T3R3M is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance value: 3.3 µH
• Current rating: 650 mA minimum
• DC resistance: 500 mOhm maximum
• Package / Case: 0805 (2012 Metric)
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 105°C minimum
• Tolerance: ±20%

The LSBHB2012KKT3R3M qualifies as a direct electrical substitute based on matching inductance, current rating, DC resistance, package dimensions, and operating temperature specifications. Both components are manufactured by Taiyo Yuden and share identical electrical performance characteristics within the specified tolerance band. The primary distinction between these parts is the shielding configuration: the main part features shielding, while the substitute is unshielded. This difference must be evaluated against specific circuit design requirements regarding electromagnetic interference and coupling considerations.

Parameter Comparison

Engineering Selection Recommendations

The LSBHB2012KKT3R3M presents a viable substitute for the MBKK2012T3R3M based on electrical parameter equivalence and regulatory compliance alignment. Both components satisfy ROHS3 compliance requirements and maintain identical moisture sensitivity classifications, ensuring compatibility with standard manufacturing and storage protocols.

The LSBHB2012KKT3R3M carries an "Active" product status, indicating ongoing manufacturer support and availability, whereas the MBKK2012T3R3M is designated "Not For New Designs." This status difference supports the use of the LSBHB2012KKT3R3M for applications requiring long-term component availability and supply chain continuity.

The substitution decision must account for the shielding differential. The MBKK2012T3R3M incorporates shielding, while the LSBHB2012KKT3R3M is unshielded. Circuit designs that depend on shielding to mitigate electromagnetic coupling, reduce radiated emissions, or isolate the inductor from external magnetic fields require evaluation of whether the unshielded configuration introduces unacceptable performance degradation. In applications where shielding is not a functional requirement, the electrical parameters remain fully compatible.

Frequently Asked Questions (FAQ)

Q: Can the LSBHB2012KKT3R3M directly replace the MBKK2012T3R3M in all applications?

A: The LSBHB2012KKT3R3M matches all critical electrical parameters: inductance (3.3 µH), current rating (650 mA), DC resistance (500 mOhm max), and package dimensions (0805 / 2012 Metric). The primary difference is shielding configuration. Direct replacement is valid for applications where electromagnetic shielding is not a design requirement. Applications requiring shielding must evaluate the unshielded substitute against specific EMI and coupling specifications.

Q: What is the significance of the "Not For New Designs" status on the MBKK2012T3R3M?

A: This designation indicates the MBKK2012T3R3M has been superseded in Taiyo Yuden's active product portfolio. The LSBHB2012KKT3R3M, carrying "Active" status, represents the current-generation equivalent. For new designs and ongoing production, the LSBHB2012KKT3R3M is the recommended selection to ensure sustained component availability and manufacturer support.

Q: Are the physical dimensions identical between these two inductors?

A: Yes. Both components share identical package specifications: 0805 (2012 Metric) case, 0.079" length × 0.049" width (2.00mm × 1.25mm), and 0.039" maximum seated height (1.00mm). PCB footprints and assembly processes are interchangeable.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the MBKK2012T3R3M and LSBHB2012KKT3R3M are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity ratings, and share identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Q: What is the practical difference between shielded and unshielded inductors in this package?

A: Shielded inductors (MBKK2012T3R3M) contain a metal enclosure that confines the magnetic field, reducing electromagnetic coupling to adjacent circuit components and minimizing radiated emissions. Unshielded inductors (LSBHB2012KKT3R3M) allow the magnetic field to extend into surrounding space. Selection depends on circuit layout, proximity to sensitive components, and EMI specifications. Both configurations deliver identical inductance and current-handling characteristics.

Q: Is the ±20% tolerance specification identical for both parts?

A: Yes. Both inductors operate within ±20% inductance tolerance at the 1 MHz test frequency, ensuring equivalent performance predictability in circuit design calculations.