Bourns 8103 Common Mode Choke - Equivalent & Substitute Parts

Part Overview

The Bourns 8103 is a 1 mH, 2-line common mode choke designed for through-hole mounting applications requiring 4.8A current capacity. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The 8103-RC represents the direct active substitute, maintaining identical electrical and mechanical specifications while offering current product availability and updated compliance status.

Substiute Parts

8103

Bourns Inc.In Stock: 101698103 Datasheet

Current PartRFQ

8103-RC

Bourns Inc.In Stock: 25608103-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 8103-RC qualifies as a direct substitute based on the following critical parameters:

• Inductance Value: Both parts specify 1 mH @ 1 kHz
• Line Configuration: Both are 2-line common mode chokes
• Current Rating: Both rated for 4.8A maximum
• DC Resistance: Both maintain 22mOhm maximum DCR
• Physical Dimensions: Identical footprint (0.760" L x 0.425" W, 22.86mm height)
• Mounting Configuration: Both use through-hole vertical, 4-pin package
• Operating Temperature Range: Both rated -55°C ~ 105°C
• Moisture Sensitivity: Both classified as MSL 1 (Unlimited)

The substitution is based on electrical equivalence and mechanical interchangeability. No parameter deviations exist between the main part and substitute.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 8103-RC is the direct replacement for the obsolete Bourns 8103. Selection of the 8103-RC is based on:

• Product Availability: The 8103 is obsolete with limited remaining inventory (10,100 pcs). The 8103-RC is active with current manufacturing support (2,495 pcs in stock).
• Compliance Status: The 8103-RC meets ROHS3 compliance requirements, whereas the original 8103 is non-compliant. Both parts maintain REACH Unaffected status and EAR99 export classification.
• Electrical and Mechanical Equivalence: All functional parameters are identical, ensuring direct PCB compatibility without design modification.
• Packaging Consideration: The 8103 is supplied in standard packaging, while the 8103-RC is supplied in bulk packaging. This distinction affects procurement logistics but does not impact component performance.

Frequently Asked Questions (FAQ)

Q: Can the 8103-RC be used as a direct replacement for the 8103 without PCB modification?

A: Yes. The 8103-RC is electrically and mechanically identical to the 8103. Both parts share the same footprint, pin configuration, and electrical specifications. No PCB redesign is required.

Q: What is the primary reason to transition from the 8103 to the 8103-RC?

A: The 8103 is classified as obsolete. The 8103-RC is the active equivalent, ensuring long-term supply chain continuity and compliance with current regulatory standards (ROHS3).

Q: Are there differences in packaging between these parts?

A: The 8103 uses standard packaging, while the 8103-RC uses bulk packaging. This affects order quantities and handling but does not impact electrical or mechanical performance.

Q: Do both parts meet the same compliance requirements?

A: The 8103-RC meets ROHS3 compliance. The original 8103 is RoHS non-compliant. Both maintain REACH Unaffected status. For applications requiring RoHS compliance, the 8103-RC is the appropriate selection.

Q: What is the current availability status of each part?

A: The 8103 has 10,100 pcs in stock but is obsolete. The 8103-RC has 2,495 pcs in stock and is actively manufactured.