SC-03-05GS Common Mode Choke Equivalent & Substitute Parts

Part Overview

The SC-03-05GS is a through-hole mounted common mode choke manufactured by KEMET, designed for power line filtering applications. This component features 500 µH inductance at 100 kHz with a 3A maximum current rating and 45 mOhm DC resistance. The part operates across a temperature range of -40°C to 105°C and carries dual voltage ratings of 250V DC and 250V AC. The SC-03-05GS maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for the application.

Substiute Parts

SC-03-05GS

KEMETIn Stock: 2373SC-03-05GS Datasheet

Current PartRFQ

SC-03-D050

KEMETIn Stock: 1253SC-03-D050 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC-03-05GS are identified based on strict adherence to the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Identical number of lines (2-line configuration)
• Identical filter type (Power Line)
• Identical current rating (3A maximum)
• Identical voltage ratings (250V DC and 250V AC)
• Identical operating temperature range (-40°C to 105°C)
• Identical mounting type (Through Hole)
• Identical package configuration (Vertical, No Base, 4 PC Pin)
• Identical RoHS compliance status (ROHS3 Compliant)

Mechanical Compatibility Criteria:

• Same base product family (SC-03 series)
• Same pin configuration and footprint class
• Same through-hole mounting interface

The SC-03-D050 is listed as a parametric equivalent based on these criteria. However, the SC-03-D050 features a different inductance value (50 µH @ 100 kHz versus 500 µH @ 100 kHz) and different physical dimensions. This inductance difference represents a 10:1 ratio and constitutes a functional variation rather than a direct electrical equivalent. The lower DC resistance of the SC-03-D050 (40 mOhm versus 45 mOhm) does not offset the inductance differential.

Parameter Comparison

Engineering Selection Recommendations

Both the SC-03-05GS and SC-03-D050 maintain Active product status and carry ROHS3 compliance certification, confirming ongoing manufacturer support and environmental regulatory alignment. Both components are manufactured by KEMET and share identical electrical ratings for current (3A), voltage (250V DC/AC), and operating temperature (-40°C to 105°C).

Selection between these parts must be based on the specific inductance requirement of the application. The SC-03-05GS provides 500 µH inductance, while the SC-03-D050 provides 50 µH inductance. These represent distinct filtering characteristics and are not interchangeable without circuit redesign.

Physical dimensions differ significantly between the two parts. The SC-03-05GS occupies 15.00mm diameter by 8.50mm width with 15.00mm maximum height. The SC-03-D050 occupies 23.00mm diameter by 13.00mm width with 23.00mm maximum height. PCB layout and mechanical clearance requirements must accommodate these dimensional differences.

Both parts employ identical through-hole mounting configuration with 4-pin vertical orientation and no base, ensuring footprint compatibility at the pin interface level. However, the larger physical envelope of the SC-03-D050 requires verification of available board space.

Frequently Asked Questions (FAQ)

Q: Can SC-03-D050 be used as a direct replacement for SC-03-05GS?

A: No. While both components share identical electrical ratings for current, voltage, and temperature range, the inductance values differ by a factor of 10 (500 µH versus 50 µH). Inductance is the primary functional parameter for common mode chokes. Substitution requires circuit analysis to confirm that 50 µH inductance meets the filtering requirements of the application.

Q: Are the physical dimensions compatible between SC-03-05GS and SC-03-D050?

A: The pin footprint and through-hole mounting interface are compatible. However, the SC-03-D050 is significantly larger in all dimensions (23.00mm diameter versus 15.00mm, and 23.00mm height versus 15.00mm). PCB layout must be verified to ensure adequate clearance for the larger component body.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SC-03-05GS and SC-03-D050 are ROHS3 compliant and maintain Active product status from KEMET. Both carry identical voltage ratings (250V DC/AC) and current ratings (3A).

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

A: SC-03-05GS has a maximum DC resistance of 45 mOhm, while SC-03-D050 has a maximum DC resistance of 40 mOhm. This 5 mOhm difference is minor and does not constitute a primary selection criterion. Inductance value is the determining factor for common mode choke selection.

Q: Can these parts be used interchangeably in power line filtering applications?

A: No. Power line filtering effectiveness depends directly on inductance value. The 10:1 inductance ratio between these parts results in fundamentally different filtering performance. Application-specific circuit analysis is required to determine which inductance value is appropriate.

Q: Are there any temperature or voltage derating considerations?

A: Both parts operate identically across the -40°C to 105°C temperature range and carry identical 250V DC and 250V AC voltage ratings. No differential derating applies between these components.