Bourns 8117 Common Mode Choke - Equivalent & Substitute Parts

Part Overview

The Bourns 8117 is a 36 mH, 2-line common mode choke designed for through-hole mounting applications requiring 2.9A maximum current handling. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The 8117 series provides electromagnetic interference (EMI) filtering for power line applications with a compact vertical pin configuration.

Substiute Parts

8117

Bourns Inc.In Stock: 7488117 Datasheet

Current PartRFQ

8117-RC

Bourns Inc.In Stock: 9768117-RC Datasheet

DirectRFQ

CMT-8117

Triad MagneticsIn Stock: 886CMT-8117 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Bourns 8117 are qualified based on the following electrical and mechanical parameters:

• Inductance value: 36 mH @ 1 kHz (exact match required)
• Number of lines: 2-line configuration (exact match required)
• Current rating: 2.9A maximum (equal or greater acceptable)
• DC resistance: 300mOhm maximum (equal or lower acceptable)
• Operating temperature: -55°C ~ 105°C minimum range (equal or wider acceptable)
• Mounting type: Through hole (exact match required)
• Physical dimensions: 1.550" L x 0.800" W, 1.650" height maximum (exact match required)
• Package configuration: Vertical, 4 PC pin (exact match required)

Parts meeting these criteria are classified as direct or similar substitutes based on manufacturer origin and product status.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 8117-RC is the primary direct substitute for the obsolete Bourns 8117. Both parts are manufactured by Bourns Inc. and share identical electrical and mechanical specifications. The 8117-RC is currently in active production status with ROHS3 compliance, making it suitable for new designs and production environments requiring regulatory adherence.

The Triad Magnetics CMT-8117 is a qualified alternative from a different manufacturer. It meets all core electrical and mechanical parameters while offering additional certifications (CSA, IEC, UL, VDE) and AC voltage rating specification (1500V). The CMT-8117 is also ROHS3 compliant and in active production status.

Selection between the Bourns 8117-RC and Triad CMT-8117 depends on supply chain availability, manufacturer preference, and specific application requirements for regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 8117-RC directly replace the obsolete Bourns 8117?

A: Yes. The 8117-RC is a direct substitute with identical inductance (36 mH @ 1 kHz), current rating (2.9A), DC resistance (300mOhm), operating temperature range (-55°C ~ 105°C), and physical dimensions. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What are the key differences between the Bourns 8117-RC and Triad CMT-8117?

A: Both parts meet identical electrical specifications and physical dimensions. The CMT-8117 provides additional AC voltage rating specification (1500V) and multiple regulatory certifications (CSA, IEC, UL, VDE). Both are ROHS3 compliant and in active production.

Q: Are there packaging differences between these substitutes?

A: The Bourns 8117 uses standard packaging, while the 8117-RC is supplied in bulk packaging. The Triad CMT-8117 is also supplied in bulk packaging. All three parts maintain identical through-hole mounting configuration and vertical 4-pin package case.

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

A: Either the Bourns 8117-RC or Triad CMT-8117 are suitable for new designs. Selection should be based on supply chain availability, manufacturer preference, and whether the additional certifications of the CMT-8117 are required for the application.

Q: Are there any compliance considerations when substituting these parts?

A: The original Bourns 8117 is RoHS non-compliant. Both substitute parts (8117-RC and CMT-8117) are ROHS3 compliant, making them appropriate for applications requiring regulatory compliance. The Triad CMT-8117 additionally carries CSA, IEC, UL, and VDE certifications.