LLQBA201212T470M Equivalent & Substitute Parts

Part Overview

The LLQBA201212T470M is a 47 µH unshielded wirewound inductor manufactured by Taiyo Yuden, designed for surface mount applications in the 0805 (2012 Metric) package. This component operates at 60 mA maximum current with a DC resistance of 3.7 Ohm and is rated for operating temperatures from -40°C to 105°C. The part is Active in product status and RoHS3 compliant. Substitute parts are identified when electrical characteristics, mechanical dimensions, and package specifications remain identical across alternative series designations from the same manufacturer.

Key Parameters

Parameter	Value
Inductance	47 µH
Tolerance	±20%
Current Rating	60 mA
DC Resistance (DCR)	3.7 Ohm
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount
Core Material	Ferrite
Shielding	Unshielded
Operating Temperature Range	-40°C ~ 105°C
Self Resonant Frequency	11 MHz
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LLQBA201212T470M are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Inductance value: 47 µH
Inductance tolerance: ±20%
Current rating: 60 mA
DC resistance: 3.7 Ohm
Package designation: 0805 (2012 Metric)
Core material: Ferrite
Shielding configuration: Unshielded
Operating temperature range: -40°C ~ 105°C
Self resonant frequency: 11 MHz
Mounting type: Surface Mount

The LSQBA201212T470M qualifies as a parametric equivalent because all electrical characteristics and mechanical specifications are identical to the main part. The difference between these parts exists only in the series designation (LLQB versus LSQB), reflecting alternative product lines within Taiyo Yuden's wirewound inductor portfolio that maintain identical performance parameters.

Parameter Comparison

Parameter	LLQBA201212T470M	LSQBA201212T470M
Manufacturer	Taiyo Yuden	Taiyo Yuden
Inductance	47 µH	47 µH
Tolerance	±20%	±20%
Current Rating (Amps)	60 mA	60 mA
DC Resistance (DCR)	3.7 Ohm	3.7 Ohm
Type	Wirewound	Wirewound
Material - Core	Ferrite	Ferrite
Shielding	Unshielded	Unshielded
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)
Height - Seated (Max)	0.057" (1.45mm)	0.057" (1.45mm)
Frequency - Self Resonant	11 MHz	11 MHz
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Inductance Frequency - Test	2.52 MHz	2.52 MHz
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8504.50.8000	8504.50.8000
Product Status	Active	Active

Engineering Selection Recommendations

Both the LLQBA201212T470M and LSQBA201212T470M are Active products from Taiyo Yuden with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain considerations rather than technical performance differences.

The LSQBA201212T470M offers higher inventory availability (3768 pieces in stock versus 833 pieces for the LLQBA201212T470M), making it suitable for applications where supply continuity is a priority. Both parts maintain ROHS3 compliance and EAR99 export classification, ensuring regulatory compatibility across standard applications.

For new designs, either part is acceptable. For existing designs currently using the LLQBA201212T470M, direct substitution with the LSQBA201212T470M requires no circuit modifications or re-qualification, as all performance parameters remain constant.

Frequently Asked Questions (FAQ)

Q: Can the LSQBA201212T470M be used as a direct replacement for the LLQBA201212T470M?

A: Yes. Both parts are identical in inductance (47 µH), current rating (60 mA), DC resistance (3.7 Ohm), package (0805), and all other electrical and mechanical specifications. Direct substitution is possible without circuit modification.

Q: What is the difference between the LLQB and LSQB series?

A: The series designation reflects different product lines within Taiyo Yuden's wirewound inductor portfolio. For the 47 µH, 60 mA, 3.7 Ohm 0805 package configuration, both series provide identical electrical performance and mechanical compatibility.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, carry EAR99 export classification, and share identical HTSUS codes (8504.50.8000). Moisture sensitivity level is 1 (Unlimited) for both parts.

Q: What is the operating temperature range for both parts?

A: Both the LLQBA201212T470M and LSQBA201212T470M operate across -40°C to 105°C.

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

A: Both parts have a self-resonant frequency of 11 MHz and are tested at 2.52 MHz. Application suitability depends on specific circuit requirements and frequency of operation.

Q: What is the inductance tolerance for these parts?

A: Both parts carry an inductance tolerance of ±20%, meaning the actual inductance value will fall within the range of 37.6 µH to 56.4 µH.

Q: Can these parts be used in automated assembly processes?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging, which is standard for automated surface mount assembly equipment.

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