LSMGA201208T221RG Ferrite Bead 220 Ohm 0805 Equivalent & Substitute Parts

Part Overview

The LSMGA201208T221RG is a power line ferrite bead manufactured by Taiyo Yuden, designed for electromagnetic interference (EMI) suppression in 0805 (2012 metric) surface mount applications. This component operates at 220 Ohms impedance at 100 MHz with a maximum current rating of 2A and 60mOhm DC resistance. The part is classified as Active and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the original LSMGA201208T221RG becomes unavailable due to supply constraints, discontinuation, or when alternative manufacturers' components meet or exceed the electrical and mechanical specifications required for the application.

Key Parameters

Parameter	Value	Unit
Impedance @ Frequency	220	Ohms @ 100 MHz
Current Rating (Max)	2	A
DC Resistance (DCR) (Max)	60	mOhm
Package / Case	0805 (2012 Metric)	—
Operating Temperature Range	-40°C ~ 125°C	—
Number of Lines	1	—
Filter Type	Power Line	—
Mounting Type	Surface Mount	—
Height (Max)	0.041	inches (1.05mm)
Size / Dimension	0.079" L x 0.049" W	(2.00mm x 1.25mm)
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of ferrite beads is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Impedance @ 100 MHz: 220 Ohms (exact match required for power line applications)
Current Rating: Minimum 2A (equal or greater acceptable)
DC Resistance (DCR): Maximum 60mOhm (lower values acceptable)
Package / Case: 0805 (2012 Metric) (exact match required)
Number of Lines: 1 (exact match required)
Mounting Type: Surface Mount (exact match required)
Operating Temperature Range: Minimum -40°C ~ 125°C (wider ranges acceptable)
RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level: MSL 1 (required)

Secondary Considerations:

Filter Type: Power Line preferred for direct equivalence; Signal Line substitutes acceptable if electrical parameters match
Height and dimensional tolerances within 0805 package specification
Product Status: Active status preferred; Not For New Designs acceptable for legacy applications

Substitute parts are grouped into two categories:

Category A - Full Electrical Equivalents (220 Ohms @ 100 MHz, 2A minimum): Parts meeting all primary criteria with identical impedance and filter type classification.

Category B - Parametric Alternatives (220 Ohms @ 100 MHz, enhanced specifications): Parts with 220 Ohms impedance but higher current ratings or lower DCR, suitable for applications with margin requirements.

Category C - Near-Equivalent Alternatives (180 Ohms @ 100 MHz): Parts with impedance deviation from specification but enhanced current handling and reduced DCR, applicable only when impedance tolerance is acceptable to the circuit design.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DCR (Max)	Filter Type	Operating Temp	Product Status	RoHS Status
LSMGA201208T221RG	Taiyo Yuden	220 Ohms	2A	60mOhm	Power Line	-40°C ~ 125°C	Active	ROHS3
FBMH2012HM221-T	Taiyo Yuden	220 Ohms	2A	60mOhm	Power Line	-40°C ~ 125°C	Not For New Designs	ROHS3
2508052217Y3	Fair-Rite Products Corp.	220 Ohms	3A	50mOhm	Signal Line	-55°C ~ 125°C	Active	ROHS3
742792022	Würth Elektronik	220 Ohms	2A	50mOhm	Signal Line	-55°C ~ 125°C	Active	ROHS3
74279220181	Würth Elektronik	180 Ohms	4A	37mOhm	—	-55°C ~ 125°C	Active	ROHS3
BBUP00201209221Y00	Pulse Electronics	220 Ohms	3A	40mOhm	—	-55°C ~ 125°C	Active	ROHS3
BLM21PG221SN1D	Murata Electronics	220 Ohms	2A	45mOhm	Power Line	-55°C ~ 125°C	Active	ROHS3
CTCB0805F-201P	Central Technologies	200 Ohms	2.5A	50mOhm	Power Line	-40°C ~ 125°C	Active	ROHS3
FBH201209T-181Y-S	Cal-Chip Electronics, Inc.	180 Ohms	3A	50mOhm	Power Line	-55°C ~ 125°C	Active	RoHS
FBU201209T-181Y-S	Cal-Chip Electronics, Inc.	180 Ohms	4A	30mOhm	Power Line	-55°C ~ 125°C	Active	RoHS
HCB 2012KF-221T30	TAI-TECH Advanced Electronics Co., Ltd.	220 Ohms	3A	40mOhm	Power Line	-40°C ~ 125°C	Active	RoHS

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Recommended for New Designs):

The following parts provide identical electrical specifications and are classified as Active:

BLM21PG221SN1D (Murata Electronics): Matches 220 Ohms impedance, 2A current rating, and power line filter type. DCR of 45mOhm is superior to the original 60mOhm specification. Extended operating temperature range (-55°C ~ 125°C) provides additional margin. ROHS3 compliant with MSL 1. Highest inventory availability (105,400 pcs).
HCB 2012KF-221T30 (TAI-TECH Advanced Electronics Co., Ltd.): Matches 220 Ohms impedance and power line filter type with enhanced 3A current rating and 40mOhm DCR. Operating temperature range -40°C ~ 125°C matches original specification. RoHS compliant with MSL 1.

Tier 2 - Enhanced Specification Equivalents (Active Status):

BBUP00201209221Y00 (Pulse Electronics): Maintains 220 Ohms impedance with enhanced 3A current rating and 40mOhm DCR. Extended operating temperature range (-55°C ~ 125°C). ROHS3 compliant with MSL 1. Suitable for applications requiring higher current margin.
2508052217Y3 (Fair-Rite Products Corp.): Provides 220 Ohms impedance with enhanced 3A current rating and 50mOhm DCR. Classified as Signal Line rather than Power Line; acceptable for applications where impedance and current specifications are primary criteria. Extended operating temperature range (-55°C ~ 125°C). ROHS3 compliant with MSL 1.
742792022 (Würth Elektronik): Maintains 220 Ohms impedance and 2A current rating with improved 50mOhm DCR. Classified as Signal Line. Extended operating temperature range (-55°C ~ 125°C). ROHS3 compliant with MSL 1.

Tier 3 - Legacy Equivalent (Not For New Designs):

FBMH2012HM221-T (Taiyo Yuden): Identical electrical specifications to LSMGA201208T221RG (220 Ohms, 2A, 60mOhm DCR, Power Line). Classified as Not For New Designs. Suitable only for legacy system maintenance or replacement applications. ROHS3 compliant with MSL 1.

Tier 4 - Impedance Deviation Alternatives (Conditional Use):

The following parts deviate from the 220 Ohms specification and are suitable only when circuit design permits impedance tolerance:

74279220181 (Würth Elektronik): 180 Ohms impedance with enhanced 4A current rating and 37mOhm DCR. Extended operating temperature range (-55°C ~ 125°C). ROHS3 compliant. Acceptable only if impedance deviation of -40 Ohms is within circuit tolerance.
FBH201209T-181Y-S (Cal-Chip Electronics, Inc.): 180 Ohms impedance with 3A current rating and 50mOhm DCR. Power Line filter type. Extended operating temperature range (-55°C ~ 125°C). RoHS compliant. Acceptable only if impedance deviation is acceptable.
FBU201209T-181Y-S (Cal-Chip Electronics, Inc.): 180 Ohms impedance with enhanced 4A current rating and superior 30mOhm DCR. Power Line filter type. Extended operating temperature range (-55°C ~ 125°C). RoHS compliant. Acceptable only if impedance deviation is acceptable.

Tier 5 - Impedance Deviation with Filter Type Mismatch (Not Recommended):

CTCB0805F-201P (Central Technologies): 200 Ohms impedance (deviation of -20 Ohms) with 2.5A current rating and 50mOhm DCR. Power Line filter type. Operating temperature range -40°C ~ 125°C matches original. ROHS3 compliant. Acceptable only if impedance tolerance permits 200 Ohms operation.

Frequently Asked Questions (FAQ)

Q: Can I substitute FBMH2012HM221-T for LSMGA201208T221RG in new designs?

A: FBMH2012HM221-T is classified as Not For New Designs. While electrical specifications are identical, Taiyo Yuden designates this part for legacy applications only. For new designs, select from Tier 1 or Tier 2 alternatives such as BLM21PG221SN1D or HCB 2012KF-221T30.

Q: What is the difference between Power Line and Signal Line ferrite beads?

A: Power Line ferrite beads are designed for power supply filtering with emphasis on handling higher current loads and maintaining performance under sustained current conditions. Signal Line ferrite beads are optimized for signal integrity in lower-current applications. Both types in this comparison maintain the same 220 Ohms impedance at 100 MHz; selection depends on circuit application requirements.

Q: Are parts with 180 Ohms impedance compatible with the LSMGA201208T221RG specification?

A: Parts with 180 Ohms impedance (74279220181, FBH201209T-181Y-S, FBU201209T-181Y-S) deviate from the 220 Ohms specification by -40 Ohms. These parts are compatible only if the circuit design permits impedance tolerance at this deviation level. Verify impedance requirements with circuit design documentation before substitution.

Q: Why do some substitute parts have lower DCR values?

A: DC Resistance (DCR) represents the resistive loss in the ferrite bead. Lower DCR values indicate improved efficiency and reduced power dissipation. The original LSMGA201208T221RG specifies a maximum of 60mOhm DCR. Substitute parts with lower DCR (such as 40mOhm or 45mOhm) provide superior performance and are directly compatible.

Q: Can I use a part with higher current rating than the original 2A specification?

A: Yes. Parts with higher current ratings (3A or 4A) are compatible substitutes. Higher current ratings indicate the component can handle greater current loads without exceeding thermal or performance limits. This provides additional design margin and is acceptable for direct substitution.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. The part does not require special moisture-controlled storage or handling procedures. All substitute parts listed maintain MSL 1 classification, ensuring compatibility with standard manufacturing and storage practices.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are either ROHS3 Compliant or RoHS Compliant. ROHS3 represents the current RoHS directive standard. Both classifications meet regulatory requirements for hazardous substance restrictions. Verify specific compliance requirements for your application jurisdiction.

Q: What is the significance of the 0805 (2012 Metric) package designation?

A: The 0805 (2012 Metric) package designation specifies the physical dimensions: 0.079" length × 0.049" width (2.00mm × 1.25mm). All substitute parts in this comparison maintain identical package dimensions, ensuring mechanical compatibility with existing PCB layouts and assembly processes. Height variations within the 0805 specification (0.041" to 0.043" maximum) do not affect PCB assembly compatibility.

Q: Can I substitute a part with a different operating temperature range?

A: Yes, if the substitute part's operating temperature range encompasses or exceeds the original specification. The LSMGA201208T221RG operates from -40°C to 125°C. Substitute parts with extended ranges (such as -55°C to 125°C) are fully compatible and provide additional thermal margin. Substitute parts with narrower ranges are not acceptable.

Q: What packaging format should I specify when ordering substitute parts?

A: The original LSMGA201208T221RG is supplied in Tape & Reel (TR) format. Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, or unspecified formats. Verify packaging availability with your supplier to ensure compatibility with your assembly process requirements.

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