TCM0806G-350-2P Equivalent & Substitute Parts

Part Overview

The TCM0806G-350-2P is a 2-line common mode choke (CMC) manufactured by TDK Corporation, designed for signal line filtering in surface mount applications. This component provides 35 ohms impedance at 100 MHz with a maximum current rating of 100mA and operates across a temperature range of -25°C to 85°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

TCM0806G-350-2P

TDK CorporationIn Stock: 1125TCM0806G-350-2P Datasheet

Current PartRFQ

MCZ0806AH350L2TA0G

TDK CorporationIn Stock: 100469MCZ0806AH350L2TA0G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TCM0806G-350-2P is determined by the following critical parameters that must remain constant or within acceptable tolerances:

Mandatory Matching Parameters:

• Number of Lines: 2
• Impedance @ Frequency: 35 Ohms @ 100 MHz
• Current Rating (Max): 100mA
• Mounting Type: Surface Mount
• Package / Case: 0302 (0806 Metric), 4 Lead
• Physical Dimensions: 0.033" L x 0.026" W (0.85mm x 0.65mm)

Allowable Variation Parameters:

• DC Resistance (DCR): May vary within component design tolerances
• Voltage Rating - DC: May be lower or equal to original specification
• Operating Temperature Range: May be narrower or equal to original specification
• Height (Max): Minor variations acceptable within assembly constraints

The MCZ0806AH350L2TA0G qualifies as a substitute based on matching all mandatory parameters while maintaining functional equivalence in signal line filtering applications.

Parameter Comparison

Engineering Selection Recommendations

The MCZ0806AH350L2TA0G serves as the manufacturer-recommended substitute for the obsolete TCM0806G-350-2P. Both components are manufactured by TDK Corporation and maintain identical electrical performance at the signal line filtering specification of 35 ohms impedance at 100 MHz with 100mA current capacity.

Design considerations for substitution:

The MCZ0806AH350L2TA0G exhibits a higher DC resistance (2.5 Ohm versus 1.15 Ohm), which may result in increased power dissipation in applications with sustained current flow. The substitute part carries a lower DC voltage rating (5V versus 10V), requiring verification that circuit voltage levels do not exceed this specification. The extended lower operating temperature range (-40°C versus -25°C) of the substitute provides broader environmental coverage.

Physical compatibility is maintained across both parts with identical footprint dimensions and package configuration. The substitute height specification (0.020" maximum) represents a minor increase from the original (0.018" maximum) and remains within typical PCB assembly tolerances.

Both components maintain REACH compliance and EAR99 export classification. The substitute part status of "Not For New Designs" reflects its position within TDK's product lifecycle management; however, it remains functionally suitable for replacement applications where the original part is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the MCZ0806AH350L2TA0G be used as a direct replacement for the TCM0806G-350-2P?

A: Yes, the MCZ0806AH350L2TA0G qualifies as a functional equivalent for signal line common mode choke applications. Both parts maintain identical impedance (35 ohms @ 100 MHz), current rating (100mA), line configuration (2-line), and physical footprint (0302/0806 metric). Substitution is valid provided circuit voltage levels do not exceed 5V DC and the increased DC resistance (2.5 ohm) is acceptable for the application.

Q: What are the key differences between these two parts?

A: The primary differences are DC resistance (TCM0806G-350-2P: 1.15 ohm; MCZ0806AH350L2TA0G: 2.5 ohm), DC voltage rating (10V versus 5V), operating temperature range (-25°C to 85°C versus -40°C to 85°C), and component height (0.018" versus 0.020" maximum). These variations do not affect impedance matching or current handling capacity.

Q: Are there any assembly or PCB layout considerations when substituting these parts?

A: The substitute part height is 0.002" greater than the original specification. This minor difference is typically accommodated within standard PCB assembly processes and does not require layout modifications. Both parts use identical 0302 (0806 metric) surface mount packaging with 4-lead configuration.

Q: What is the significance of the product status designations?

A: The TCM0806G-350-2P is classified as obsolete, indicating it is no longer manufactured or supported by TDK Corporation. The MCZ0806AH350L2TA0G carries a "Not For New Designs" status, meaning it remains available for replacement and maintenance applications but is not recommended for new product development. For new designs, consultation with TDK regarding current-generation common mode choke offerings is advised.

Q: How does the increased DC resistance affect circuit performance?

A: The MCZ0806AH350L2TA0G exhibits 2.5 ohm DC resistance compared to 1.15 ohm in the original part. In applications with continuous current flow at or near the 100mA rating, this results in increased resistive losses and power dissipation. Power dissipation increase is proportional to the resistance difference and current squared. Circuit thermal analysis should confirm that this additional dissipation remains within acceptable limits for the application.

Q: Are both parts RoHS compliant?

A: The TCM0806G-350-2P does not specify RoHS status in the provided data. The MCZ0806AH350L2TA0G is confirmed as RoHS3 compliant. Both parts maintain REACH compliance and are unaffected by REACH regulations.