LCMGA160808T331RG Ferrite Bead 330 Ohm 0603 Equivalent & Substitute Parts

Part Overview

The LCMGA160808T331RG is a power line ferrite bead manufactured by Taiyo Yuden, designed for electromagnetic interference (EMI) suppression in surface mount applications. This component operates at 330 Ohms impedance at 100 MHz with a maximum current rating of 1.2A and is housed in a 0603 (1608 Metric) package. The part is currently in active production status and carries AEC-Q200 automotive qualification.

Substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers are required for supply chain diversification, or when design requirements permit operation with modified electrical characteristics within acceptable tolerance ranges.

Key Parameters

Parameter	Value	Unit
Impedance @ 100 MHz	330	Ohms
Current Rating (Maximum)	1.2	Amperes
DC Resistance (Maximum)	130	milliOhms
Package / Case	0603 (1608 Metric)	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-40°C to 125°C	—
Filter Type	Power Line	—
Number of Lines	1	—
AEC-Q200 Rating	Yes	—
RoHS3 Compliance	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 or equivalent)
Current rating capability (minimum 1.2A)
DC resistance (maximum 130 milliOhms)
Package type (0603 / 1608 Metric)
Single power line configuration
Surface mount mounting type
AEC-Q200 automotive qualification

Substitution Categories:

Category 1: Direct Parametric Equivalents (330 Ohms @ 100 MHz, 1.2A minimum) Parts that match all critical electrical parameters and package specifications with identical or superior performance characteristics.

Category 2: Enhanced Performance Equivalents (330 Ohms @ 100 MHz, 1.7A) Parts that maintain identical impedance and package specifications but provide increased current handling capacity and reduced DC resistance, suitable for applications with higher current demands or lower loss requirements.

Category 3: Near-Equivalent Alternatives (390 Ohms @ 100 MHz) Parts with modified impedance values that operate within acceptable tolerance ranges for applications where impedance variation is permissible within circuit design margins.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz (Ohms)	Current Rating (A)	DC Resistance (mOhm)	Operating Temperature (°C)	Product Status	Height Max (mm)
LCMGA160808T331RG	Taiyo Yuden	330	1.2	130	-40 to 125	Active	0.90
FBMH1608HM331-TV	Taiyo Yuden	330	1.2	130	-40 to 125	Not For New Designs	0.90
BLM18KG331SH1D	Murata Electronics	330	1.7	80	-55 to 125	Active	0.95
MPZ1608R391ATD25	TDK Corporation	390	1.2	120	-55 to 125	Active	0.95
MPZ1608S331ATD25	TDK Corporation	330	1.7	80	-55 to 125	Active	0.95

Engineering Selection Recommendations

Primary Recommendation: MPZ1608S331ATD25 (TDK Corporation)

The MPZ1608S331ATD25 is the preferred substitute for new designs. This part maintains identical impedance specification (330 Ohms @ 100 MHz) and package configuration (0603 / 1608 Metric) while providing enhanced electrical performance through increased current rating (1.7A versus 1.2A) and reduced DC resistance (80 milliOhms versus 130 milliOhms). The part carries active product status, AEC-Q200 qualification, and extended operating temperature range (-55°C to 125°C). Inventory availability is substantial at 71,499 pieces.

Secondary Recommendation: BLM18KG331SH1D (Murata Electronics)

The BLM18KG331SH1D offers identical impedance and package specifications with superior current handling (1.7A) and lower DC resistance (80 milliOhms). This part is actively produced and carries AEC-Q200 qualification with extended temperature range (-55°C to 125°C). Inventory availability is extensive at 1,000,100 pieces. Height specification is marginally increased (0.95mm versus 0.90mm) and requires verification against PCB layout constraints.

Alternative Consideration: MPZ1608R391ATD25 (TDK Corporation)

The MPZ1608R391ATD25 operates at 390 Ohms impedance, representing an 18% increase from the 330 Ohm specification. This part is suitable only for applications where impedance tolerance permits this variation. The part maintains 1.2A current rating, reduced DC resistance (120 milliOhms), and active product status with AEC-Q200 qualification. Use is restricted to designs where circuit analysis confirms acceptable performance at the higher impedance value.

Not Recommended for New Designs: FBMH1608HM331-TV (Taiyo Yuden)

Although this part provides identical electrical specifications to the primary component, it carries "Not For New Designs" product status. This designation indicates the manufacturer has discontinued active development and support for this part number. Existing inventory (82,292 pieces) may be available for legacy system support only.

Frequently Asked Questions (FAQ)

Q: Can MPZ1608S331ATD25 be used as a direct replacement for LCMGA160808T331RG?

A: Yes. Both parts operate at 330 Ohms impedance at 100 MHz, support 1.2A minimum current, are housed in 0603 (1608 Metric) packages, and carry AEC-Q200 qualification. The MPZ1608S331ATD25 provides superior performance characteristics (1.7A rating, 80 milliOhm DCR) and active product status, making it suitable for direct substitution in new designs.

Q: What is the significance of the height difference between LCMGA160808T331RG (0.90mm) and BLM18KG331SH1D (0.95mm)?

A: The 0.05mm height difference is within typical PCB assembly tolerances for 0603 package components. Verification against specific PCB layout and solder reflow profile requirements is necessary to confirm compatibility with existing designs. This difference does not affect electrical performance.

Q: Is MPZ1608R391ATD25 suitable for applications requiring 330 Ohm impedance?

A: No. The MPZ1608R391ATD25 operates at 390 Ohms impedance, representing an 18% deviation from the 330 Ohm specification. This part is suitable only for applications where circuit design analysis confirms acceptable performance at the higher impedance value. Use in designs requiring 330 Ohm impedance requires engineering validation.

Q: Why is FBMH1608HM331-TV marked "Not For New Designs"?

A: This designation indicates the manufacturer has transitioned this part to end-of-life status and is no longer actively supporting new design implementations. While existing inventory may be available, new designs should utilize actively produced alternatives such as MPZ1608S331ATD25 or BLM18KG331SH1D to ensure long-term supply chain stability and manufacturer support.

Q: What are the key differences between the Murata BLM18KG331SH1D and TDK MPZ1608S331ATD25?

A: Both parts provide identical impedance (330 Ohms @ 100 MHz), current rating (1.7A), and DC resistance (80 milliOhms) specifications. The primary differences are manufacturer source, packaging format (Murata: Cut Tape & Digi-Reel; TDK: Tape & Reel), and inventory availability (Murata: 1,000,100 pieces; TDK: 71,499 pieces). Electrical performance and AEC-Q200 qualification are equivalent.

Q: Can the increased current rating of MPZ1608S331ATD25 (1.7A) cause issues in circuits designed for 1.2A?

A: No. Current rating represents the maximum allowable current the component can safely conduct. A component rated for 1.7A operates safely at 1.2A or lower. The higher rating provides design margin and reduced thermal stress, resulting in improved reliability and extended component life.

Q: Are all substitute parts RoHS3 compliant and REACH unaffected?

A: Yes. All parts listed in this reference carry RoHS3 compliance and REACH unaffected status, meeting environmental and regulatory requirements for automotive and industrial applications.

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