SC-02-E120J Common Mode Choke Equivalent & Substitute Parts

Part Overview

The SC-02-E120J is a 12 mH common mode choke manufactured by KEMET, designed for power line filtering applications in two-line configurations. This through-hole component operates at 2A maximum current with a DC resistance of 180 mOhm and is rated for 250V DC/AC operation across an extended temperature range of -40°C to 120°C. The part maintains Active product status and is RoHS3 compliant, making it suitable for modern electronic equipment requiring EMI suppression in AC power distribution circuits.

Equivalent substitute parts are identified when they maintain compatibility across critical electrical and mechanical parameters while preserving functional performance in the target application.

Substiute Parts

SC-02-E120J

KEMETIn Stock: 1210SC-02-E120J Datasheet

Current PartRFQ

SC-02-E115J

KEMETIn Stock: 938SC-02-E115J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC-02-E120J is determined by the following critical parameters:

• Inductance tolerance: Substitute parts must operate within the same inductance range at 10 kHz to maintain equivalent filtering performance
• Current rating: Minimum 2A rating required to handle design current without thermal stress
• DC resistance: Lower DCR values are acceptable as they reduce power dissipation; higher values may increase heat generation
• Voltage ratings: Must meet or exceed 250V DC and AC ratings for safety compliance
• Mounting configuration: Through-hole mounting with vertical, 4-pin package orientation must be preserved for PCB compatibility
• Temperature range: Operating range must encompass -40°C to 120°C minimum
• Compliance certifications: RoHS3 compliance required for regulatory alignment

The SC-02-E115J qualifies as a parametric equivalent based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the SC-02-E120J and SC-02-E115J maintain Active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory alignment for current and future applications. The SC-02-E115J presents a 4% reduction in inductance (11.5 mH versus 12 mH) paired with a 14% improvement in DC resistance (155 mOhm versus 180 mOhm), resulting in lower power dissipation during operation. Both parts share identical current ratings, voltage specifications, and temperature operating ranges, confirming mechanical and electrical interchangeability within the SC-J series platform. Selection between these parts depends on application-specific filtering requirements and thermal management considerations.

Frequently Asked Questions (FAQ)

Q: Can SC-02-E115J replace SC-02-E120J in existing designs?

A: Yes. Both parts maintain identical current ratings (2A), voltage ratings (250V DC/AC), operating temperature ranges (-40°C to 120°C), and through-hole mounting configurations. The 0.5 mH inductance difference and 25 mOhm DCR improvement in the SC-02-E115J are within acceptable substitution parameters for common mode choke applications.

Q: What is the impact of the inductance difference between these parts?

A: The SC-02-E115J operates at 11.5 mH versus the SC-02-E120J at 12 mH, representing a 4% reduction. This difference affects the filtering cutoff frequency and attenuation characteristics. Applications with strict inductance specifications should confirm compatibility with circuit simulation or testing.

Q: Are there physical dimension differences between these parts?

A: Yes. The SC-02-E120J measures 24.00 mm L × 16.00 mm W × 25.00 mm H, while the SC-02-E115J measures 25.00 mm L × 15.40 mm W × 27.50 mm H. PCB layout verification is required to confirm fit within available mounting space.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SC-02-E120J and SC-02-E115J are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS coding (8548.00.0000).

Q: Which part offers better thermal performance?

A: The SC-02-E115J provides superior thermal performance due to its 155 mOhm maximum DC resistance compared to the SC-02-E120J at 180 mOhm, resulting in reduced power dissipation at rated current.