KEMET SC-02-300 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The KEMET SC-02-300 is a 3 mH @ 100 kHz, 2-line common mode choke designed for power line filtering applications. This through-hole component operates at 2A maximum current with 100 mOhm DC resistance and is rated for 250V DC/AC operation across the temperature range of -40°C to 105°C. The part is ROHS3 compliant and currently active in production. Substitute parts are identified when equivalent electrical performance can be achieved through alternative inductance values, DC resistance specifications, or physical form factors while maintaining compatibility with the 2-line, 2A current rating and voltage specifications.

Substiute Parts

SC-02-300

KEMETIn Stock: 968SC-02-300 Datasheet

Current PartRFQ

SC-02-100

KEMETIn Stock: 1183SC-02-100 Datasheet

Parametric EquivalentRFQ

SC-02-101

KEMETIn Stock: 1252SC-02-101 Datasheet

Parametric EquivalentRFQ

SC-02-10GS

KEMETIn Stock: 1967SC-02-10GS Datasheet

Parametric EquivalentRFQ

SC-02-200

KEMETIn Stock: 1035SC-02-200 Datasheet

Parametric EquivalentRFQ

SC-02-500

KEMETIn Stock: 80922SC-02-500 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC-02-300 are grouped based on the following substitution criteria:

Mandatory Matching Parameters:

• Number of Lines: 2 (all substitutes)
• Current Rating: 2A (all substitutes)
• Voltage Rating - DC: 250V (all substitutes)
• Voltage Rating - AC: 250V (all substitutes)
• Operating Temperature Range: -40°C to 105°C (all substitutes)
• Mounting Type: Through Hole (all substitutes)
• Filter Type: Power Line (all substitutes)
• RoHS Status: ROHS3 Compliant (all substitutes)

Variable Parameters (Allowed to Differ):

• Inductance @ 100 kHz: 1 mH, 2 mH, 3 mH, or 5 mH
• DC Resistance (Max): 80 mOhm to 110 mOhm
• Physical Dimensions: Varies by inductance value

The SC-02-300 can be substituted with alternative inductance values within the SC-02 series when circuit design permits. Lower inductance values (1 mH) provide reduced filtering but smaller physical footprint. Higher inductance values (5 mH) provide enhanced filtering but larger physical footprint. DC resistance variations within the specified range are acceptable based on thermal design margins.

Parameter Comparison

Engineering Selection Recommendations

SC-02-300 Direct Equivalent: The SC-02-300 is the primary specification for applications requiring 3 mH inductance at 100 kHz with 100 mOhm maximum DC resistance. All electrical and mechanical parameters are fixed for this inductance value.

Lower Inductance Substitutes (1 mH): SC-02-100, SC-02-101, and SC-02-10GS provide 1 mH inductance. These parts are suitable when reduced filtering is acceptable or when space constraints require smaller physical dimensions. SC-02-10GS offers the lowest DC resistance (80 mOhm) and smallest footprint (0.591" height). SC-02-100 and SC-02-101 are intermediate options with slightly larger dimensions. All three maintain 2A current rating and 250V voltage specifications. Product status is Active for all three parts.

Intermediate Inductance Substitute (2 mH): SC-02-200 provides 2 mH inductance, positioned between 1 mH and 3 mH options. This part offers a compromise between filtering performance and physical size. DC resistance is 110 mOhm. Product status is Active.

Higher Inductance Substitute (5 mH): SC-02-500 provides 5 mH inductance for applications requiring enhanced filtering performance. Physical dimensions match the SC-02-300 (1.063" height). DC resistance is 100 mOhm, identical to the main part. Inventory availability is significantly higher (80900 Pcs). Product status is Active.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. All parts are rated for -40°C to 105°C operation and carry identical voltage ratings (250V DC/AC). Through-hole mounting type is consistent across all options.

Frequently Asked Questions (FAQ)

Q: Can SC-02-100 (1 mH) replace SC-02-300 (3 mH) in my circuit?

A: Substitution depends on circuit filtering requirements. The SC-02-100 provides one-third the inductance of the SC-02-300. If your design specifies 3 mH inductance for EMI suppression or frequency response, the 1 mH part will not provide equivalent filtering performance. If your circuit can tolerate reduced inductance, the SC-02-100 is electrically compatible in terms of current rating (2A), voltage rating (250V DC/AC), and operating temperature range (-40°C to 105°C).

Q: What is the difference between SC-02-100 and SC-02-101?

A: Both parts provide 1 mH inductance at 100 kHz and 2A current rating. The primary difference is DC resistance: SC-02-100 has 100 mOhm maximum, while SC-02-101 has 110 mOhm maximum. Physical dimensions are identical (0.906" height). The 10 mOhm difference affects power dissipation calculations. SC-02-101 inventory is higher (1198 Pcs vs. 1083 Pcs).

Q: Why is SC-02-10GS smaller than other 1 mH parts?

A: SC-02-10GS has a height of 0.591" compared to 0.906" for SC-02-100 and SC-02-101. This compact form factor is achieved through different core design while maintaining 1 mH inductance, 2A current rating, and 250V voltage specifications. SC-02-10GS offers the lowest DC resistance (80 mOhm) among 1 mH options and highest inventory availability (1866 Pcs).

Q: Can I use SC-02-500 (5 mH) instead of SC-02-300 (3 mH)?

A: SC-02-500 provides enhanced filtering due to higher inductance (5 mH vs. 3 mH). Both parts share identical physical dimensions (1.063" height), identical DC resistance (100 mOhm), and identical electrical ratings (2A, 250V DC/AC, -40°C to 105°C). Substitution is feasible if your circuit design permits increased inductance. SC-02-500 has significantly higher inventory (80900 Pcs).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (SC-02-100, SC-02-101, SC-02-10GS, SC-02-200, SC-02-500) are ROHS3 compliant. All maintain REACH unaffected status and EAR99 ECCN classification, matching the SC-02-300 regulatory profile.

Q: What is the impact of DC resistance variation on part selection?

A: DC resistance ranges from 80 mOhm (SC-02-10GS) to 110 mOhm (SC-02-101, SC-02-200). Higher DC resistance increases power dissipation according to P = I²R. At 2A maximum current, the difference between 80 mOhm and 110 mOhm represents 0.32W to 0.44W dissipation. Thermal design margins must accommodate this variation. Lower DC resistance (80 mOhm) is preferable for high-current applications.

Q: Do all substitute parts use through-hole mounting?

A: Yes. All substitute parts use through-hole mounting with 4 PC pin configuration. PCB layout compatibility is maintained across all options. Physical height varies by inductance value, which may affect board-level clearance considerations.

Q: What is the operating temperature range for all parts?

A: All parts, including SC-02-300 and all substitutes, operate across -40°C to 105°C. This range is consistent and non-negotiable for substitution purposes.