SC3326F-4R7 Equivalent & Substitute Parts

Part Overview

The SC3326F-4R7 is a 4.7 µH unshielded wirewound inductor manufactured by Signal Transformer, rated for 7.2 A continuous current with a maximum DC resistance of 18mOhm. This component is designed for surface mount applications in nonstandard package configurations and operates across the industrial temperature range of -40°C to 125°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent inductance values, current ratings, and operating temperature ranges are maintained within acceptable tolerance specifications, allowing for direct functional replacement in circuit designs.

Substiute Parts

SC3326F-4R7

Signal TransformerIn Stock: 1132SC3326F-4R7 Datasheet

Current PartRFQ

DR124-4R7-R

Eaton - Electronics DivisionIn Stock: 1796DR124-4R7-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC3326F-4R7 is determined by the following critical parameters:

• Inductance Value: Must be 4.7 µH with ±20% tolerance
• Current Rating: Minimum 6.5 A continuous current capability
• DC Resistance: Maximum 18 mOhm to maintain thermal and efficiency characteristics
• Operating Temperature: Full -40°C to 125°C range support
• Mounting Type: Surface mount configuration
• Compliance: RoHS3 compliance and MSL 1 rating required

The DR124-4R7-R from Eaton - Electronics Division meets these substitution criteria with equivalent inductance, compatible current handling within acceptable margins, and identical operating temperature specifications. Both parts are tested at 100 kHz and maintain full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the SC3326F-4R7 and DR124-4R7-R maintain Active product status with full ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring long-term availability and regulatory adherence for industrial applications.

The SC3326F-4R7 provides a 7.2 A continuous current rating with unshielded construction. The DR124-4R7-R offers shielded drum core construction with a 6.5 A continuous current rating and superior DC resistance characteristics (16.2 mOhm versus 18 mOhm maximum). Selection between these parts depends on circuit-specific requirements for electromagnetic shielding and current margin specifications.

Frequently Asked Questions (FAQ)

Q: Can the DR124-4R7-R replace the SC3326F-4R7 in all applications?

A: The DR124-4R7-R is functionally equivalent for inductance and temperature range. However, the continuous current rating is 6.5 A versus 7.2 A, and the saturation current is 7.65 A versus 9.5 A. Verify that your circuit design operates within the DR124-4R7-R current specifications. The shielded construction of the DR124-4R7-R may also affect electromagnetic coupling in sensitive circuit layouts.

Q: What is the difference between shielded and unshielded construction?

A: The SC3326F-4R7 is unshielded wirewound, while the DR124-4R7-R uses shielded drum core construction. Shielded inductors reduce electromagnetic interference coupling to adjacent components. Unshielded inductors typically occupy less board space and may be preferred in applications where EMI is not a concern.

Q: Are both parts available in the same package?

A: Both parts are surface mount nonstandard packages. The SC3326F-4R7 measures 0.530" L x 0.390" W x 0.315" H (13.45mm x 9.90mm x 8.00mm). The DR124-4R7-R measures 0.492" L x 0.492" W x 0.177" H (12.50mm x 12.50mm x 4.50mm). Physical dimensions differ; verify PCB layout compatibility before substitution.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the SC3326F-4R7 and DR124-4R7-R are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both maintain MSL 1 (unlimited) moisture sensitivity ratings.