LB2012T100K Equivalent & Substitute Parts

Part Overview

The LB2012T100K is a 10 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 120 mA continuous current with 700mOhm DC resistance in a 0805 (2012 Metric) surface mount package. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 functionally required.

Substiute Parts

LB2012T100K

Taiyo YudenIn Stock: 3307LB2012T100K Datasheet

Current PartRFQ

LSQBA201212T100K

Taiyo YudenIn Stock: 1191LSQBA201212T100K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LB2012T100K are identified based on strict electrical and mechanical parameter matching within the wirewound inductor category. The substitution criteria are:

Critical Matching Parameters:

• Inductance value: 10 µH
• Current rating: 120 mA minimum
• DC resistance: 700mOhm
• Tolerance: ±10%
• Package: 0805 (2012 Metric) surface mount
• Shielding configuration: Unshielded
• Operating temperature range: -40°C ~ 105°C
• Self-resonant frequency: 32 MHz
• Inductance test frequency: 2.52 MHz

The LSQBA201212T100K meets all specified electrical and mechanical parameters. This part represents an active product status alternative from the same manufacturer, maintaining identical functional characteristics while offering current production availability.

Parameter Comparison

Engineering Selection Recommendations

The LSQBA201212T100K is a direct functional equivalent to the LB2012T100K. Both components are manufactured by Taiyo Yuden and share identical electrical specifications, mechanical dimensions, and compliance certifications. The primary distinction is product lifecycle status: the LB2012T100K is designated "Not For New Designs," while the LSQBA201212T100K maintains active production status.

For applications currently using the LB2012T100K, the LSQBA201212T100K provides a seamless substitution path. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings. The substitute part maintains the same inductance value, current rating, DC resistance, and thermal operating range, ensuring functional compatibility in existing circuit designs without modification.

The LSQBA201212T100K is the recommended selection for new procurement and ongoing production support due to its active product status and continued manufacturer availability.

Frequently Asked Questions (FAQ)

Q: Can the LSQBA201212T100K be used as a direct replacement for the LB2012T100K in existing designs?

A: Yes. The LSQBA201212T100K is electrically and mechanically identical to the LB2012T100K. All critical parameters—inductance, current rating, DC resistance, package dimensions, and operating temperature range—are matched. No circuit modifications are required.

Q: What is the difference between the LB2012T100K and LSQBA201212T100K?

A: The components are functionally equivalent. The primary difference is product status: LB2012T100K is "Not For New Designs," while LSQBA201212T100K is an active product. The LSQBA201212T100K uses a ferrite core material, whereas the LB2012T100K core material is not specified in available documentation.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both the LB2012T100K and LSQBA201212T100K use the 0805 (2012 Metric) surface mount package with identical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.057" (1.45mm). They are footprint-compatible.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). They meet identical regulatory and environmental requirements.

Q: What is the inductance tolerance for these parts?

A: Both the LB2012T100K and LSQBA201212T100K have an inductance tolerance of ±10%, meaning the actual inductance value will fall between 9 µH and 11 µH.

Q: Can these inductors handle higher current than the rated 120 mA?

A: No. Both parts are rated for a maximum continuous current of 120 mA. Operation above this rating will exceed component specifications.

Q: What is the DC resistance specification, and why is it important?

A: Both parts have a DC resistance of 700mOhm. This resistance contributes to power dissipation and heat generation in the inductor. It is a critical parameter for circuit design, particularly in power supply and filtering applications.

Q: Are these parts suitable for high-frequency applications?

A: Both inductors have a self-resonant frequency of 32 MHz and are tested at 2.52 MHz. They are suitable for applications within these frequency ranges. Operation near or above the self-resonant frequency will degrade inductor performance.