8117-RC Common Mode Choke Equivalent & Substitute Parts

Part Overview

The Bourns 8117-RC is a 36 mH, 2-line common mode choke designed for through-hole mounting applications requiring EMI filtering in power line circuits. This component operates at a maximum current rating of 2.9A with a DC resistance of 300mOhm and is rated for operating temperatures between -55°C and 105°C. The part is currently active in production and maintains ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1).

Equivalent parts are identified when manufacturers discontinue production, inventory becomes limited, or design requirements necessitate alternative sourcing from qualified suppliers. The substitute part listed maintains identical electrical specifications and mechanical compatibility.

Substiute Parts

8117-RC

Bourns Inc.In Stock: 9768117-RC Datasheet

Current PartRFQ

CMT-8117

Triad MagneticsIn Stock: 886CMT-8117 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CMT-8117 from Triad Magnetics qualifies as a direct substitute based on the following critical parameters:

• Electrical Equivalence: Identical inductance value (36 mH @ 1 kHz), current rating (2.9A), and DC resistance (300mOhm)
• Mechanical Compatibility: Matching footprint dimensions (1.550" L x 0.800" W, 1.650" max height) and identical pin configuration (Vertical, 4 PC Pin through-hole package)
• Environmental Specifications: Identical operating temperature range (-55°C ~ 105°C)
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status

The CMT-8117 includes additional AC voltage rating (1500V) and multiple approval agencies (CSA, IEC, UL, VDE), providing enhanced certification coverage for applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 8117-RC and CMT-8117 are active production components with full ROHS3 compliance. Selection between these parts should be based on application-specific certification requirements:

• 8117-RC: Select when sourcing from Bourns inventory is preferred or when no additional voltage rating certification is required
• CMT-8117: Select when applications require documented AC voltage rating (1500V) or when multiple international approvals (CSA, IEC, UL, VDE) are specified in design requirements

Both components are electrically and mechanically interchangeable for standard EMI filtering applications in the specified current and temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can the CMT-8117 be used as a direct replacement for the 8117-RC in existing designs?

A: Yes. Both parts share identical electrical specifications (36 mH inductance, 2.9A current rating, 300mOhm DCR), mechanical dimensions, and pin configuration. No PCB layout modifications are required.

Q: What is the difference between these two parts?

A: The primary differences are manufacturer and certification coverage. The CMT-8117 includes specified AC voltage rating (1500V) and multiple approval agencies (CSA, IEC, UL, VDE), while the 8117-RC does not list these specifications. Electrically and mechanically, both parts are equivalent.

Q: Are there any temperature or current limitations when substituting?

A: No. Both parts operate across the identical temperature range (-55°C ~ 105°C) and share the same maximum current rating (2.9A). Substitution does not introduce thermal or current handling differences.

Q: Does the package configuration remain the same?

A: Yes. Both parts use identical through-hole mounting with vertical, 4-pin configuration and matching footprint dimensions (1.550" L x 0.800" W, 1.650" max height).

Q: Are both parts RoHS compliant?

A: Yes. Both the 8117-RC and CMT-8117 maintain ROHS3 compliance and REACH unaffected status.