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LSMGA201208T331RG Equivalent & Substitute Parts
Part Overview
The LSMGA201208T331RG 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 impedance with a maximum current rating of 1.8A and DC resistance of 80mOhm. The part is classified as Active product status and is ROHS3 compliant.
Substitute parts are necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from multiple qualified manufacturers. Equivalent ferrite beads must maintain identical or superior electrical performance within the specified operating parameters while maintaining mechanical compatibility with the 0805 package footprint.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Impedance @ Frequency | 330 Ohms @ 100 MHz | Ohms |
| Current Rating (Max) | 1.8A | A |
| DC Resistance (DCR) (Max) | 80mOhm | mOhm |
| Package / Case | 0805 (2012 Metric) | — |
| Operating Temperature Range | -40°C ~ 125°C | °C |
| Mounting Type | Surface Mount | — |
| Filter Type | Power Line | — |
| Number of Lines | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Ferrite bead substitution is determined by the following critical parameters:
Primary Substitution Criteria:
- Impedance value at 100 MHz (330 Ohms nominal)
- Package footprint (0805 / 2012 Metric)
- Current rating capability (minimum 1.8A for direct replacement)
- DC resistance (80mOhm maximum)
- Operating temperature range (-40°C to 125°C minimum)
Secondary Compatibility Factors:
- Surface mount mounting type
- Single line configuration
- RoHS3 compliance
- Moisture sensitivity level (MSL 1 or equivalent)
Substitute parts are grouped into two categories:
Category A - Direct Parametric Equivalents: Parts with 330 Ohms impedance at 100 MHz, 1.8A or higher current rating, and 80mOhm or lower DCR. These parts maintain identical electrical performance to the primary part.
Category B - Functional Equivalents: Parts with 300-330 Ohms impedance at 100 MHz and current ratings of 2A or higher. These parts provide equivalent filtering performance with minor impedance variance within acceptable engineering tolerances for power line applications.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Impedance @ 100 MHz | Current Rating (Max) | DCR (Max) | Operating Temp Range | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|
| LSMGA201208T331RG | Taiyo Yuden | 330 Ohms | 1.8A | 80mOhm | -40°C ~ 125°C | Active | ROHS3 Compliant |
| FBMH2012HM331-T | Taiyo Yuden | 330 Ohms | 1.8A | 80mOhm | -40°C ~ 125°C | Not For New Designs | ROHS3 Compliant |
| 2176487-1 | TE Connectivity Passive Product | 300 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| 742792031 | Würth Elektronik | 300 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| 742792037 | Würth Elektronik | 330 Ohms | 2A | 80mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| 74279220321 | Würth Elektronik | 320 Ohms | 2.5A | 50mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| BBPY00201209301Y00 | Pulse Electronics | 300 Ohms | 2A | 80mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| BBPY00201209331Y00 | Pulse Electronics | 330 Ohms | 2A | 80mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| BBUP00201209331Y00 | Pulse Electronics | 330 Ohms | 3A | 50mOhm | -55°C ~ 125°C | Active | ROHS3 Compliant |
| CTCB0805F-301P | Central Technologies | 300 Ohms | 2A | 80mOhm | -40°C ~ 125°C | Active | ROHS3 Compliant |
| CTCB0805F-301S | Central Technologies | 300 Ohms | 2A | 80mOhm | -40°C ~ 125°C | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Tier 1 - Direct Replacement (Identical Specifications):
FBMH2012HM331-T (Taiyo Yuden) provides identical electrical and mechanical specifications to the LSMGA201208T331RG. However, this part carries "Not For New Designs" status, limiting its application to legacy system support or existing inventory utilization only.
Tier 2 - Primary Substitutes (Active Status, Matching Impedance):
BBPY00201209331Y00 (Pulse Electronics) and 742792037 (Würth Elektronik) both deliver 330 Ohms impedance at 100 MHz with Active product status. Both parts maintain 80mOhm maximum DCR and support current ratings of 2A or higher. These parts are suitable for new designs and provide direct functional equivalence to the primary part.
BBUP00201209331Y00 (Pulse Electronics) offers superior current handling at 3A with reduced DCR of 50mOhm, providing enhanced performance margin for power line applications while maintaining 330 Ohms impedance.
Tier 3 - Functional Equivalents (300 Ohms Impedance):
2176487-1 (TE Connectivity), 742792031 (Würth Elektronik), BBPY00201209301Y00 (Pulse Electronics), CTCB0805F-301P, and CTCB0805F-301S (Central Technologies) all operate at 300 Ohms impedance at 100 MHz. These parts deliver equivalent filtering performance with 10% lower impedance than the primary part. All maintain Active product status and ROHS3 compliance. Current ratings range from 2A to 3A with DCR values of 50-80mOhm.
Tier 4 - Near-Equivalent (320 Ohms Impedance):
74279220321 (Würth Elektronik) provides 320 Ohms impedance at 100 MHz, representing a 3% deviation from the primary part specification. This part offers 2.5A current rating and 50mOhm DCR with Active status and extended temperature range to -55°C.
All substitute parts maintain 0805 (2012 Metric) package compatibility, surface mount mounting type, and ROHS3 compliance with the primary part.
Frequently Asked Questions (FAQ)
Q: Can FBMH2012HM331-T be used as a direct replacement for LSMGA201208T331RG?
A: FBMH2012HM331-T provides identical electrical specifications (330 Ohms @ 100 MHz, 1.8A, 80mOhm DCR) and mechanical compatibility. However, this part is designated "Not For New Designs," restricting its use to legacy system maintenance or existing inventory applications only.
Q: What is the impedance tolerance between 330 Ohms and 300 Ohms ferrite beads?
A: A 300 Ohms ferrite bead represents a 10% reduction in impedance compared to the 330 Ohms specification. This variance remains within acceptable engineering tolerances for power line filtering applications where impedance values are typically specified with ±20% tolerance bands. Parts such as 2176487-1, 742792031, BBPY00201209301Y00, CTCB0805F-301P, and CTCB0805F-301S operate at this impedance level.
Q: Are all substitute parts compatible with the 0805 package footprint?
A: All listed substitute parts utilize the 0805 (2012 Metric) package footprint with identical land pattern dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) or 0.079" L x 0.047" W (2.00mm x 1.20mm). Height variations range from 0.041" to 0.043" (1.05mm to 1.10mm), which remain within standard PCB assembly tolerances for surface mount components.
Q: Which substitute parts offer improved current handling compared to the primary part?
A: BBUP00201209331Y00 (Pulse Electronics) provides 3A current rating with 50mOhm DCR, exceeding the primary part's 1.8A rating. Additionally, 2176487-1 (TE Connectivity) and 742792031 (Würth Elektronik) both support 3A current ratings at 50mOhm DCR, offering enhanced performance margins for high-current power line applications.
Q: What is the difference between Power Line and Signal Line filter types?
A: The primary part LSMGA201208T331RG is classified as a Power Line ferrite bead. Substitute parts designated as Signal Line (742792037, 742792031) are optimized for signal integrity applications. Both filter types utilize ferrite core technology but are characterized by different impedance profiles across frequency ranges. Power Line beads typically exhibit higher impedance at lower frequencies, while Signal Line beads provide more consistent impedance across broader frequency ranges.
Q: Are all substitute parts ROHS3 compliant?
A: All listed substitute parts carry ROHS3 compliance certification, matching the primary part's environmental compliance status. This ensures compatibility with regulatory requirements for electronic component procurement in regulated industries.
Q: What operating temperature range should be considered when selecting a substitute?
A: The primary part operates from -40°C to 125°C. Most substitute parts extend the lower temperature limit to -55°C, providing enhanced performance in cold environment applications. CTCB0805F-301P and CTCB0805F-301S maintain the -40°C lower limit matching the primary part. All parts support the 125°C upper temperature limit.
Q: Can 74279220321 (320 Ohms) be used as a substitute for 330 Ohms applications?
A: 74279220321 operates at 320 Ohms impedance, representing a 3% deviation from the 330 Ohms specification. This part is suitable for applications where impedance tolerance permits minor variations. The part offers superior current handling (2.5A) and reduced DCR (50mOhm) with Active product status and extended temperature range to -55°C.
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