LLMGA201208T331RG Equivalent & Substitute Parts

Part Overview

The LLMGA201208T331RG is a 330 Ohm ferrite bead manufactured by Taiyo Yuden, designed for power line filtering applications in 0805 (2012 Metric) surface mount packages. This component operates at 100 MHz with a maximum current rating of 1.8A and a DC resistance of 80mOhm. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from alternative manufacturers offering equivalent electrical and mechanical characteristics. The following substitute parts maintain compatibility with the original specification parameters.

Key Parameters

Parameter	Value	Unit
Impedance @ 100 MHz	330	Ohms
Current Rating (Maximum)	1.8	Amperes
DC Resistance (Maximum)	80	mOhm
Package / Case	0805 (2012 Metric)	—
Operating Temperature Range	-40 to 125	°C
Mounting Type	Surface Mount	—
Filter Type	Power Line	—
Number of Lines	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the LLMGA201208T331RG are classified into two categories based on electrical parameter alignment:

Category A: Full Parametric Equivalents These parts maintain identical electrical specifications: 330 Ohms impedance at 100 MHz, 1.8A maximum current rating, and 80mOhm maximum DC resistance. All parts in this category are housed in 0805 (2012 Metric) packages with surface mount configuration. These substitutes are directly interchangeable without circuit redesign.

Category B: Near-Equivalent Alternatives These parts share the 0805 (2012 Metric) package and surface mount configuration but differ in one or more electrical parameters including impedance value, current rating, or DC resistance. Selection from this category requires engineering evaluation to confirm circuit compatibility.

The substitution logic is strictly based on the following parameters:

Impedance @ 100 MHz (primary electrical characteristic)
Current Rating (Maximum)
DC Resistance (Maximum)
Package / Case (mechanical compatibility)
Mounting Type (assembly compatibility)
Operating Temperature Range (environmental suitability)
Filter Type classification (application context)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz (Ohms)	Current Rating Max (A)	DC Resistance Max (mOhm)	Filter Type	Operating Temp (°C)	Product Status
LLMGA201208T331RG	Taiyo Yuden	330	1.8	80	Power Line	-40 to 125	Active
FBMH2012HM331-T	Taiyo Yuden	330	1.8	80	Power Line	-40 to 125	Not For New Designs
LSMGA201208T331RG	Taiyo Yuden	330	1.8	80	Power Line	-40 to 125	Active
2176487-1	TE Connectivity Passive Product	300	3.0	50	Signal Line	-55 to 125	Active
742792031	Würth Elektronik	300	3.0	50	Signal Line	-55 to 125	Active
742792037	Würth Elektronik	330	2.0	80	Signal Line	-55 to 125	Active
74279220321	Würth Elektronik	320	2.5	50	—	-55 to 125	Active
BBPY00201209301Y00	Pulse Electronics	300	2.0	80	—	-55 to 125	Active
BBPY00201209331Y00	Pulse Electronics	330	2.0	80	—	-55 to 125	Active
BBUP00201209331Y00	Pulse Electronics	330	3.0	50	—	-55 to 125	Active
CTCB0805F-301P	Central Technologies	300	2.0	80	Power Line	-40 to 125	Active

Engineering Selection Recommendations

Direct Substitutes (Full Compatibility)

LSMGA201208T331RG (Taiyo Yuden) is the primary direct substitute. This part maintains identical electrical parameters (330 Ohms @ 100 MHz, 1.8A maximum current, 80mOhm DC resistance) and identical operating temperature range (-40°C to 125°C). Both parts are active production items with RoHS3 compliance. The LSMGA series represents an alternative product line from the same manufacturer with equivalent performance characteristics.

FBMH2012HM331-T (Taiyo Yuden) is a parametric equivalent but carries "Not For New Designs" status. This designation indicates the manufacturer has discontinued active development for new applications. While electrically identical to the LLMGA201208T331RG, this part should be reserved for legacy system maintenance or existing design support only.

Near-Equivalent Alternatives (Conditional Compatibility)

BBPY00201209331Y00 (Pulse Electronics) matches the 330 Ohm impedance and 80mOhm DC resistance but reduces the maximum current rating from 1.8A to 2.0A. This part is suitable for applications where the circuit current requirement does not exceed 1.8A. The operating temperature range extends to -55°C, providing enhanced low-temperature performance.

BBUP00201209331Y00 (Pulse Electronics) maintains the 330 Ohm impedance but increases the maximum current rating to 3.0A and reduces DC resistance to 50mOhm. This part is suitable for applications requiring higher current capacity or lower insertion loss. The extended operating temperature range (-55°C to 125°C) provides additional environmental margin.

742792037 (Würth Elektronik) matches the 330 Ohm impedance and 80mOhm DC resistance with a 2.0A maximum current rating. This part is classified as a signal line ferrite bead rather than power line, indicating different application context. The extended operating temperature range (-55°C to 125°C) is available.

Alternative Impedance Values (Design Evaluation Required)

Parts with 300 Ohm or 320 Ohm impedance values (2176487-1, 742792031, 74279220321, BBPY00201209301Y00, CTCB0805F-301P) represent impedance deviations from the original 330 Ohm specification. These parts are suitable only when circuit design permits impedance tolerance or when the application requires the specific electrical characteristics of these alternatives.

All substitute parts listed maintain RoHS3 compliance and are available in active production status except FBMH2012HM331-T.

Frequently Asked Questions (FAQ)

Q: Can LSMGA201208T331RG be used as a direct replacement for LLMGA201208T331RG?

A: Yes. The LSMGA201208T331RG is a direct substitute with identical electrical specifications (330 Ohms @ 100 MHz, 1.8A maximum current, 80mOhm DC resistance), identical operating temperature range (-40°C to 125°C), and identical 0805 (2012 Metric) surface mount package. Both parts are active production items with RoHS3 compliance.

Q: What is the difference between FBMH2012HM331-T and LLMGA201208T331RG?

A: The FBMH2012HM331-T is electrically and mechanically identical to the LLMGA201208T331RG. The primary difference is product status: FBMH2012HM331-T carries "Not For New Designs" designation, indicating discontinued active development. This part should be used only for legacy system support or existing design maintenance.

Q: Can I use BBPY00201209331Y00 instead of LLMGA201208T331RG?

A: The BBPY00201209331Y00 is suitable if your circuit current requirement does not exceed 1.8A. This part maintains the 330 Ohm impedance and 80mOhm DC resistance but has a 2.0A maximum current rating. The extended operating temperature range (-55°C to 125°C) provides additional environmental capability. Verify that your application current does not exceed 1.8A before selection.

Q: What is the difference between power line and signal line ferrite beads?

A: The LLMGA201208T331RG is classified as a power line ferrite bead, designed for filtering in power distribution circuits. Signal line ferrite beads (such as 742792037) are designed for filtering in signal path applications. While both types may have similar impedance values, their internal construction and performance characteristics differ. Selection should match the intended application context.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts listed are available in 0805 (2012 Metric) surface mount packages. However, packaging format (Tape & Reel versus Cut Tape) may vary. Verify packaging compatibility with your assembly process requirements before final selection.

Q: Can I use a 300 Ohm ferrite bead instead of the 330 Ohm LLMGA201208T331RG?

A: A 300 Ohm ferrite bead (such as 2176487-1, 742792031, BBPY00201209301Y00, or CTCB0805F-301P) represents a 10 Ohm impedance reduction from the original specification. This substitution is permissible only when circuit design analysis confirms that the lower impedance value does not compromise filtering performance or introduce unacceptable signal attenuation. Engineering evaluation is required.

Q: What does RoHS3 compliance mean?

A: RoHS3 compliance indicates the part meets the Restriction of Hazardous Substances Directive 3 requirements, restricting the use of specific hazardous materials including lead, cadmium, mercury, and certain brominated flame retardants. All substitute parts listed maintain RoHS3 compliance, ensuring environmental and regulatory compatibility.

Q: Why does CTCB0805F-301P have a narrower operating temperature range?

A: The CTCB0805F-301P operates from -40°C to 125°C, matching the LLMGA201208T331RG range. Most alternative manufacturers (Würth Elektronik, Pulse Electronics, TE Connectivity) extend the lower temperature limit to -55°C, providing enhanced performance in cold environment applications. Select based on your specific operating temperature requirements.

Q: Is moisture sensitivity level (MSL) important for ferrite bead selection?

A: The LLMGA201208T331RG carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. Most substitute parts also carry MSL 1 rating. This parameter becomes critical only when extended storage in high-humidity environments is anticipated or when specific manufacturing process requirements mandate moisture control.

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