SC-20-100 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The SC-20-100 is a 1 mH common mode choke manufactured by KEMET, designed for power line filtering applications. This through-hole component operates at 20A maximum current with 8mOhm DC resistance and supports dual-line filtering in industrial and power distribution circuits. The part maintains Active product status with full RoHS3 compliance and REACH unaffected certification, ensuring continued availability and regulatory compliance for new designs and legacy system maintenance.

Substiute Parts

SC-20-100

KEMETIn Stock: 931SC-20-100 Datasheet

Current PartRFQ

SC-20-104

KEMETIn Stock: 997SC-20-104 Datasheet

Parametric EquivalentRFQ

SC-20-D010

KEMETIn Stock: 955SC-20-D010 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC-20-100 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Current Rating (Max): 20A
• DC Resistance (Max): 8mOhm
• Voltage Rating - DC: 250V
• Voltage Rating - AC: 250V
• Number of Lines: 2
• Operating Temperature Range: -40°C ~ 105°C
• Mounting Type: Through Hole
• Package / Case: Horizontal, No Base, 4 PC Pin
• Product Status: Active
• RoHS Status: ROHS3 Compliant

Secondary Consideration:

• Inductance @ Frequency: 1 mH @ 100 kHz (exact match required for direct substitution)

The SC-20-100 has two identified substitute parts within the KEMET SC series. SC-20-104 maintains identical electrical specifications and mechanical compatibility with dimensional variations. SC-20-D010 differs in inductance value (10 µH instead of 1 mH) and physical dimensions, requiring circuit-level evaluation for application suitability.

Parameter Comparison

Engineering Selection Recommendations

SC-20-104 as Direct Substitute: SC-20-104 qualifies as a direct parametric equivalent to SC-20-100. Both parts maintain identical electrical specifications (1 mH @ 100 kHz, 20A, 8mOhm DCR, 250V DC/AC ratings) and mechanical compatibility (through-hole mounting, 4-pin horizontal package). Dimensional differences (52mm vs. 60mm diameter; 31mm vs. 30mm height) represent minor physical variations within the same product family. Both parts carry Active product status, ROHS3 compliance, and REACH unaffected certification. SC-20-104 is suitable for direct board-level substitution without circuit modification.

SC-20-D010 as Conditional Substitute: SC-20-D010 differs fundamentally in inductance value (10 µH vs. 1 mH), representing a 100:1 reduction in filtering capability. While electrical ratings (20A, 8mOhm, 250V) and mounting type remain compatible, the inductance change requires circuit-level analysis to confirm application suitability. SC-20-D010 is appropriate only when lower inductance filtering is specified or when space constraints necessitate the smaller physical footprint (34mm diameter, 23mm height). Both parts maintain Active status and full compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can SC-20-104 replace SC-20-100 in existing designs? A: Yes. SC-20-104 maintains identical electrical specifications and mechanical compatibility. The dimensional differences (52mm vs. 60mm diameter) are minor variations within the same product family and do not affect electrical performance or board-level integration.

Q: What is the key difference between SC-20-100 and SC-20-D010? A: The primary difference is inductance value. SC-20-100 provides 1 mH filtering, while SC-20-D010 provides 10 µH. This 100:1 reduction in inductance affects common mode noise attenuation performance. SC-20-D010 also features a smaller physical footprint (34mm vs. 60mm diameter).

Q: Are all three parts RoHS3 compliant? A: Yes. SC-20-100, SC-20-104, and SC-20-D010 are all ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for industrial and commercial applications.

Q: Can SC-20-D010 be used as a drop-in replacement for SC-20-100? A: SC-20-D010 is mechanically compatible (through-hole, 4-pin package) but electrically different due to reduced inductance (10 µH vs. 1 mH). Circuit-level evaluation is required to confirm application suitability. Physical dimensions are also smaller (34mm vs. 60mm diameter).

Q: What are the current and voltage ratings for all substitute parts? A: All three parts (SC-20-100, SC-20-104, SC-20-D010) share identical current and voltage specifications: 20A maximum current, 8mOhm maximum DC resistance, and 250V DC/AC voltage ratings.

Q: Do all parts operate across the same temperature range? A: Yes. SC-20-100, SC-20-104, and SC-20-D010 all operate across -40°C to 105°C, ensuring consistent thermal performance across all substitute options.

Q: Which substitute part has better inventory availability? A: SC-20-104 has 926 pieces in stock, compared to 850 pieces for SC-20-100 and 855 pieces for SC-20-D010, providing the highest immediate availability.