CTCB0805F-151M Ferrite Bead Equivalent & Substitute Parts

Part Overview

The CTCB0805F-151M is a surface-mount ferrite bead manufactured by Central Technologies, designed for electromagnetic interference (EMI) suppression in electronic circuits. This component operates at 150 Ohms impedance at 100 MHz with a maximum current rating of 300mA and is housed in a 0805 (2012 Metric) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

CTCB0805F-151M

Central TechnologiesIn Stock: 822CTCB0805F-151M Datasheet

Current PartRFQ

MLS0805-4S7-121

FerroxcubeIn Stock: 5121MLS0805-4S7-121 Datasheet

Parametric EquivalentRFQ

MLS0805-4S7-151

FerroxcubeIn Stock: 1085MLS0805-4S7-151 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CTCB0805F-151M ferrite bead is determined by strict alignment of electrical performance and mechanical form factor. The critical parameters governing substitution are:

Electrical Parameters:

• Impedance value at 100 MHz (150 Ohms for direct equivalence)
• Maximum current rating (300mA minimum)
• DC resistance (250mOhm maximum)

Mechanical Parameters:

• Package type (0805 / 2012 Metric)
• Mounting configuration (Surface Mount)
• Physical dimensions compatible with PCB layout

Environmental & Compliance Parameters:

• Operating temperature range (-40°C to 125°C)
• RoHS3 compliance

Substitute parts must satisfy all electrical parameters within specified tolerances and maintain identical package and mounting characteristics to ensure direct board-level replacement without design modification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: MLS0805-4S7-151 (Ferroxcube)

The MLS0805-4S7-151 is the direct electrical equivalent to the CTCB0805F-151M. This part maintains identical impedance (150 Ohms @ 100 MHz), current rating (300mA), and DC resistance (250mOhm) specifications. Both components are housed in 0805 (2012 Metric) packages with matching surface-mount configurations and operating temperature ranges. The MLS0805-4S7-151 carries Active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory conformance. This substitute provides direct board-level replacement capability without circuit design modification.

Secondary Substitute: MLS0805-4S7-121 (Ferroxcube)

The MLS0805-4S7-121 is an alternative ferrite bead with reduced impedance (120 Ohms @ 100 MHz) compared to the original specification. This part maintains identical current rating (300mA), DC resistance (250mOhm), package type (0805), and operating temperature range. Selection of this substitute is appropriate only when circuit design permits operation at 120 Ohms impedance or when impedance reduction is functionally acceptable. The MLS0805-4S7-121 is Active status with ROHS3 compliance.

Both Ferroxcube alternatives provide superior inventory availability compared to the obsolete Central Technologies original part.

Frequently Asked Questions (FAQ)

Q: Can MLS0805-4S7-151 be used as a direct replacement for CTCB0805F-151M without PCB modification?

A: Yes. The MLS0805-4S7-151 maintains identical electrical specifications (150 Ohms @ 100 MHz, 300mA current rating, 250mOhm DC resistance) and mechanical form factor (0805 package, surface mount). Direct substitution on existing PCB layouts is supported.

Q: What is the difference between MLS0805-4S7-121 and MLS0805-4S7-151?

A: The primary difference is impedance value. MLS0805-4S7-121 operates at 120 Ohms @ 100 MHz, while MLS0805-4S7-151 operates at 150 Ohms @ 100 MHz. All other electrical parameters (current rating, DC resistance) and mechanical specifications are identical. Selection depends on circuit impedance requirements.

Q: Are both Ferroxcube substitutes compatible with the original PCB footprint?

A: Yes. Both MLS0805-4S7-121 and MLS0805-4S7-151 are packaged in 0805 (2012 Metric) with surface-mount configuration. Physical dimensions are compatible with standard 0805 PCB footprints. Minor dimensional variations (width: 0.047" vs 0.049") do not affect PCB placement or soldering.

Q: What is the significance of the obsolete status of CTCB0805F-151M?

A: Obsolete status indicates the part is no longer manufactured by Central Technologies and existing inventory is limited. Active substitutes from Ferroxcube ensure continued availability for production and repair applications.

Q: Do the substitute parts meet the same environmental and compliance standards?

A: Yes. Both MLS0805-4S7-121 and MLS0805-4S7-151 are ROHS3 compliant and operate across the identical temperature range (-40°C to 125°C) as the original CTCB0805F-151M.

Q: Which substitute should be selected for new designs?

A: MLS0805-4S7-151 is recommended for new designs requiring 150 Ohms impedance at 100 MHz. This part provides direct electrical equivalence to the original specification and carries Active product status with established supply chain availability.