Bourns 8110 Common Mode Choke - Equivalent & Substitute Parts

Part Overview

The Bourns 8110 is a 20 mH, 2-line common mode choke designed for through-hole mounting applications requiring EMI filtering in power distribution circuits. The component is rated for 2.9A maximum current with 210 mOhm DC resistance and operates across the temperature range of -55°C to 105°C.

The 8110 series is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems or redesigns incorporating active alternatives.

Substiute Parts

8110

Bourns Inc.In Stock: 9288110 Datasheet

Current PartRFQ

8110-RC

Bourns Inc.In Stock: 8728110-RC Datasheet

DirectRFQ

CMT-8110

Triad MagneticsIn Stock: 940CMT-8110 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Bourns 8110 are identified based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Inductance value: 20 mH @ 1 kHz
• Number of lines: 2-line configuration
• Current rating: 2.9A maximum
• DC resistance: 210 mOhm maximum
• Mounting type: Through hole
• Physical dimensions: 1.350" L x 0.800" W, 1.450" height maximum
• Package configuration: Vertical, 4 PC pin

Substitute Classification:

Direct Manufacturer Equivalent: Bourns 8110-RC maintains identical electrical specifications and physical form factor. The primary distinction is product status (active vs. obsolete) and packaging format (bulk vs. standard).

Similar Manufacturer Alternative: Triad Magnetics CMT-8110 matches all core electrical parameters and physical dimensions. This part introduces additional AC voltage rating (1500V) and expanded approval certifications (CSA, IEC, UL, VDE) not specified in the original 8110 documentation.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The Bourns 8110-RC is the primary substitute. It maintains identical electrical and mechanical specifications while offering active product status and RoHS3 compliance. This part is suitable for direct board-level substitution without design modification.

For Alternative Sourcing: The Triad Magnetics CMT-8110 provides equivalent electrical performance and physical compatibility. This part includes additional certifications (CSA, IEC, UL, VDE) and AC voltage rating specification (1500V) not documented in the original 8110. Selection of this alternative should be based on supply availability and compliance requirements specific to the application.

Compliance Considerations: Both substitute parts achieve RoHS3 compliance, addressing regulatory requirements that may not have applied to the original obsolete 8110 design. Designs requiring RoHS compliance should transition to either the 8110-RC or CMT-8110.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 8110-RC be used as a direct replacement for the 8110?

A: Yes. The 8110-RC maintains identical inductance (20 mH @ 1 kHz), current rating (2.9A), DC resistance (210 mOhm), operating temperature range (-55°C to 105°C), and physical dimensions (1.350" L x 0.800" W, 1.450" height). The vertical 4-pin configuration and through-hole mounting are unchanged. The primary differences are product status (active vs. obsolete) and packaging format.

Q: What are the key differences between the Bourns 8110-RC and Triad Magnetics CMT-8110?

A: Both parts match the core electrical specifications and physical form factor. The CMT-8110 includes documented AC voltage rating (1500V) and expanded approval certifications (CSA, IEC, UL, VDE). The 8110-RC is the direct Bourns equivalent with identical specifications to the original 8110.

Q: Are there any mechanical compatibility issues when substituting these parts?

A: No. All three parts share identical dimensions (1.350" L x 0.800" W, 1.450" maximum height) and the same vertical 4-pin through-hole package configuration. Board-level substitution requires no layout modifications.

Q: Which substitute part should be selected for new designs?

A: For new designs, either the Bourns 8110-RC or Triad Magnetics CMT-8110 are appropriate. Selection depends on supplier availability, cost considerations, and whether the additional certifications and AC voltage rating of the CMT-8110 are required by the application.

Q: Do the substitute parts meet RoHS compliance requirements?

A: Yes. Both the Bourns 8110-RC and Triad Magnetics CMT-8110 are RoHS3 compliant. The original 8110 is classified as RoHS non-compliant.