Bourns 8114 Common Mode Choke - Equivalent & Substitute Parts

Part Overview

The Bourns 8114 is a 2.5 mH, 2-line common mode choke rated for 12.5A maximum current with 11mOhm DC resistance, designed for through-hole mounting in power line filtering applications. The 8114 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Active alternatives within the 8100 series and compatible third-party options are available to maintain circuit performance and compliance requirements.

Substiute Parts

8114

Bourns Inc.In Stock: 8478114 Datasheet

Current PartRFQ

8114-RC

Bourns Inc.In Stock: 29018114-RC Datasheet

DirectRFQ

8119-RC

Bourns Inc.In Stock: 9808119-RC Datasheet

Parametric EquivalentRFQ

CMT-8114

Triad MagneticsIn Stock: 753CMT-8114 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Bourns 8114 are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (8114-RC): Maintains identical electrical specifications—2.5 mH inductance, 12.5A current rating, 11mOhm DCR, and 2-line configuration. Physical dimensions, mounting type, and pin configuration are unchanged. The primary distinction is product status (Active vs. Obsolete) and RoHS compliance level (ROHS3 Compliant vs. RoHS non-compliant).

Parametric Equivalent (8119-RC): Shares the same series (8100), mounting type (Through Hole), and pin configuration (Vertical, 4 PC Pin), but with increased electrical ratings: 4 mH inductance, 14.5A current rating, and 12mOhm DCR. Physical dimensions are larger (1.700" L x 0.900" W, 1.650" height). This part is suitable for applications requiring higher current capacity or inductance values within the same form factor family.

Similar Equivalent (CMT-8114): Manufactured by Triad Magnetics, this part matches the 8114 in all critical electrical parameters (2.5 mH, 12.5A, 11mOhm DCR) and physical dimensions. Key differences include AC voltage rating (1500V), filter type classification (Power Line), and regulatory approvals (CSA, IEC, UL, VDE). RoHS3 compliance is confirmed.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The 8114-RC is the primary substitute for the obsolete 8114. Both parts maintain identical electrical specifications and physical dimensions, ensuring pin-for-pin compatibility on existing PCB layouts. The 8114-RC is Active status with ROHS3 compliance, addressing regulatory requirements for new production. This part is recommended for designs requiring no circuit modifications.

For Higher Current Applications: The 8119-RC provides increased current capacity (14.5A vs. 12.5A) and inductance (4 mH vs. 2.5 mH) while maintaining the same mounting type and pin configuration. PCB layout modifications are necessary due to larger physical dimensions (1.700" L x 0.900" W vs. 1.450" L x 0.800" W). This part is suitable for applications where circuit performance benefits from higher inductance or where thermal margin is required for sustained current operation.

For Multi-Standard Compliance: The CMT-8114 from Triad Magnetics matches the 8114 in all critical electrical and physical parameters while providing AC voltage rating (1500V) and multiple regulatory approvals (CSA, IEC, UL, VDE). This part is applicable for designs requiring enhanced safety certifications or power line filtering with documented international compliance. ROHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the 8114-RC be used as a direct replacement for the 8114 without PCB modifications?

A: Yes. The 8114-RC maintains identical electrical specifications (2.5 mH, 12.5A, 11mOhm DCR), physical dimensions (1.450" L x 0.800" W, 1.500" height), and pin configuration (Vertical, 4 PC Pin). No circuit or layout changes are required.

Q: What is the primary difference between the 8114 and 8114-RC?

A: The 8114 is classified as Obsolete with RoHS non-compliant status. The 8114-RC is Active status with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: When should the 8119-RC be selected instead of the 8114-RC?

A: The 8119-RC is selected when the application requires higher current capacity (14.5A vs. 12.5A) or increased inductance (4 mH vs. 2.5 mH). Physical dimensions are larger, requiring PCB layout modifications. Operating temperature range remains -55°C to 105°C.

Q: Is the CMT-8114 a pin-for-pin replacement for the 8114?

A: Yes. The CMT-8114 maintains identical electrical specifications, physical dimensions, and pin configuration (Vertical, 4 PC Pin). The primary distinction is manufacturer (Triad Magnetics vs. Bourns Inc.) and regulatory approvals (CSA, IEC, UL, VDE).

Q: Are all substitute parts RoHS compliant?

A: The 8114-RC, 8119-RC, and CMT-8114 are all ROHS3 compliant. The original 8114 is RoHS non-compliant, which is one reason substitution is necessary for new designs.

Q: What is the moisture sensitivity level for these parts?

A: The 8114, 8114-RC, and 8119-RC all have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The CMT-8114 has MSL listed as Not Applicable.

Q: Can the 8119-RC be used in applications designed for the 8114?

A: The 8119-RC can be used if the application circuit can accommodate higher inductance (4 mH vs. 2.5 mH) and higher current rating (14.5A vs. 12.5A). PCB layout modifications are required due to larger physical dimensions. Circuit performance impact must be evaluated based on specific filtering requirements.