Bourns 7112-RC Common Mode Choke Equivalent & Substitute Parts

Part Overview

The Bourns 7112-RC is an 850 µH common mode choke designed for two-line filtering applications in through-hole configurations. This Active product operates across the industrial temperature range of -55°C to 105°C and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

7112-RC

Bourns Inc.In Stock: 7697112-RC Datasheet

Current PartRFQ

7108-RC

Bourns Inc.In Stock: 11627108-RC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7112-RC is determined by the following critical parameters:

• Number of Lines: Must be 2 (common mode choke configuration)
• Mounting Type: Must be Through Hole (mechanical compatibility)
• Package / Case: Must be Vertical, No Base, 4 PC Pin (PCB footprint compatibility)
• Current Rating: Must support minimum 2A
• Operating Temperature Range: Must encompass -55°C ~ 105°C
• Series: Bourns 7100 series maintains consistent electrical and mechanical standards
• Compliance: ROHS3 and REACH status must be maintained

The Bourns 7108-RC qualifies as a parametric equivalent within the 7100 series, sharing identical mechanical mounting characteristics, current rating, temperature range, and compliance certifications. Inductance and DCR values differ but remain within the allowable substitution parameters for this product category.

Parameter Comparison

Engineering Selection Recommendations

Both the 7112-RC and 7108-RC are Active products with ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current and future applications. Selection between these parts depends on circuit-specific inductance requirements: the 7112-RC provides 850 µH filtering, while the 7108-RC provides 1.7 mH filtering. The 7108-RC occupies a smaller physical footprint (0.700" diameter vs. 0.900" diameter), which may provide layout advantages in space-constrained designs. Both parts maintain identical current handling (2A), temperature performance (-55°C ~ 105°C), and through-hole mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 7108-RC replace the 7112-RC in my circuit?

A: Mechanical and electrical compatibility is confirmed for through-hole PCB mounting. However, the 7108-RC provides 1.7 mH inductance versus the 7112-RC's 850 µH. Circuit performance depends on whether your design requires the specific inductance value of the original part. Verify that the higher inductance does not degrade system performance.

Q: What are the physical differences between these parts?

A: The 7112-RC measures 0.900" diameter x 0.650" width with 0.900" maximum height. The 7108-RC measures 0.700" diameter x 0.550" width with 0.700" maximum height. Both use identical Vertical, No Base, 4 PC Pin packaging. The 7108-RC's smaller footprint may allow tighter PCB layout.

Q: Are both parts compliant with current regulations?

A: Yes. Both the 7112-RC and 7108-RC are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in DC resistance between these parts?

A: The 7112-RC has a maximum DCR of 50 mOhm, while the 7108-RC has a maximum DCR of 60 mOhm. This 10 mOhm difference may affect power dissipation in high-current applications.

Q: Do both parts operate across the same temperature range?

A: Yes. Both the 7112-RC and 7108-RC operate from -55°C to 105°C, ensuring consistent performance across industrial temperature environments.