TCM0806S-350-2P Common Mode Choke Equivalent & Substitute Parts

Part Overview

The TCM0806S-350-2P is a 2-line common mode choke manufactured by TDK Corporation, designed for signal line filtering applications. This surface mount component operates at 35 Ohms impedance at 100 MHz with a maximum current rating of 100mA and DC resistance of 1.5 Ohm. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

TCM0806S-350-2P

TDK CorporationIn Stock: 11283TCM0806S-350-2P Datasheet

Current PartRFQ

TCM0605S-350-2P-T201

TDK CorporationIn Stock: 2368TCM0605S-350-2P-T201 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TCM0806S-350-2P is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Impedance: 35 Ohms @ 100 MHz (must match)
• Current Rating: 100mA maximum (must match or exceed)
• Number of Lines: 2 (must match)
• Voltage Rating - DC: 10V minimum (must match or exceed)
• Operating Temperature Range: -25°C ~ 85°C (must match or exceed)

Mechanical Compatibility Criteria:

• Filter Type: Signal Line (must match)
• Mounting Type: Surface Mount (must match)
• Package Configuration: 4 Lead (must match)

The substitute part TCM0605S-350-2P-T201 maintains all critical electrical parameters while operating within a smaller physical footprint. The increase in DC resistance from 1.5 Ohm to 2.7 Ohm remains within acceptable operational limits for signal line filtering applications at the specified current rating.

Parameter Comparison

Engineering Selection Recommendations

The TCM0605S-350-2P-T201 is the designated manufacturer substitute for the obsolete TCM0806S-350-2P. Selection of this substitute is supported by the following factors:

Product Status: The substitute part maintains active product status with TDK Corporation, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Regulatory Compliance: The substitute part carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for electronic component procurement.

Electrical Equivalence: All critical electrical parameters remain identical, including impedance, current rating, voltage rating, and operating temperature range. The increased DC resistance of 2.7 Ohm versus 1.5 Ohm operates within acceptable limits for signal line filtering applications at the specified 100mA current rating.

Physical Footprint: The substitute employs a smaller 0202 (0505 Metric) package compared to the 0302 (0806 Metric) package of the main part, enabling space optimization in PCB layouts while maintaining electrical performance.

Frequently Asked Questions (FAQ)

Q: Can TCM0605S-350-2P-T201 be used as a direct replacement for TCM0806S-350-2P?

A: Yes. Both components share identical electrical specifications for impedance, current rating, voltage rating, and operating temperature. The substitute operates within the same functional parameters for signal line filtering applications.

Q: What is the impact of the increased DC resistance in the substitute part?

A: The DC resistance increases from 1.5 Ohm to 2.7 Ohm. At the maximum current rating of 100mA, this results in a power dissipation increase of approximately 0.12mW, which remains negligible for signal line filtering applications.

Q: Are there PCB layout considerations when switching from TCM0806S-350-2P to TCM0605S-350-2P-T201?

A: Yes. The substitute part uses a smaller 0202 (0505 Metric) package with dimensions of 0.65mm x 0.50mm compared to the main part's 0.85mm x 0.65mm footprint. PCB layouts must be updated to accommodate the reduced component size and pad configuration.

Q: What packaging formats are available for each part?

A: The TCM0806S-350-2P is supplied in Cut Tape (CT) and Digi-Reel® formats. The TCM0605S-350-2P-T201 is supplied in Tape & Reel (TR) format. Procurement specifications must reflect the appropriate packaging requirement for manufacturing processes.

Q: Are both parts classified under the same ECCN and HTSUS codes?

A: Yes. Both TCM0806S-350-2P and TCM0605S-350-2P-T201 share identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications for export and tariff purposes.