SC52LC-330 Equivalent & Substitute Parts

Part Overview

The SC52LC-330 is a 33 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring moderate current handling and controlled DC resistance characteristics. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent inductance values, current ratings, and operating temperature ranges align with application requirements while maintaining compliance certifications.

Substiute Parts

SC52LC-330

Signal TransformerIn Stock: 1168SC52LC-330 Datasheet

Current PartRFQ

MP2A-330-R

Eaton - Electronics DivisionIn Stock: 4233MP2A-330-R Datasheet

MFR RecommendedRFQ

VLCF4018T-330MR42-2

TDK CorporationIn Stock: 9782VLCF4018T-330MR42-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC52LC-330 are qualified based on the following criteria:

• Inductance Match: All substitutes maintain 33 µH nominal inductance with ±20% tolerance
• Current Handling: Substitute parts must support minimum 780 mA current rating or equivalent saturation current performance
• DC Resistance: Substitutes with DCR values within acceptable range for the application (455–540 mOhm)
• Mounting Compatibility: All substitutes are surface mount, nonstandard package format
• Compliance: RoHS3 compliance and REACH unaffected status maintained across all qualified substitutes
• Operating Temperature: Substitutes operate within -40°C minimum; upper temperature limits vary by manufacturer

Two substitute parts meet these criteria: MP2A-330-R (Eaton) and VLCF4018T-330MR42-2 (TDK).

Parameter Comparison

Engineering Selection Recommendations

MP2A-330-R (Eaton): This substitute provides the highest current rating (790 mA) and saturation current (790 mA), exceeding the SC52LC-330 specifications. DCR is marginally higher at 476 mOhm. The unshielded design may introduce electromagnetic coupling considerations in noise-sensitive applications. Operating temperature upper limit is reduced to 85°C compared to the original 125°C. RoHS compliance is confirmed. Physical dimensions are larger (7.50mm x 5.20mm), requiring PCB layout verification.

VLCF4018T-330MR42-2 (TDK): This substitute maintains shielded construction matching the original design. Current rating (420 mA) and saturation current (420 mA) are lower than the SC52LC-330, limiting application to circuits with reduced current demands. DCR is higher at 540 mOhm Max. Operating temperature range extends to 105°C, providing intermediate thermal performance. RoHS3 compliance and REACH unaffected status are maintained. Smallest physical footprint (4.00mm x 4.00mm) offers space optimization benefits.

Selection between substitutes depends on application-specific requirements: current capacity, thermal environment, EMI sensitivity, and available PCB space.

Frequently Asked Questions (FAQ)

Q: Can MP2A-330-R replace SC52LC-330 in all applications?

A: MP2A-330-R meets inductance and current specifications but operates at reduced maximum temperature (85°C vs. 125°C). Unshielded construction may affect EMI performance. PCB layout must accommodate larger dimensions (7.50mm x 5.20mm).

Q: Is VLCF4018T-330MR42-2 suitable for high-current applications?

A: No. VLCF4018T-330MR42-2 current rating (420 mA) is significantly lower than SC52LC-330 (780 mA). This substitute is appropriate only for applications with reduced current demands.

Q: What are the shielding differences between substitutes?

A: SC52LC-330 and VLCF4018T-330MR42-2 are shielded inductors, reducing radiated EMI. MP2A-330-R is unshielded, which may increase electromagnetic coupling to adjacent circuit elements.

Q: Do all substitutes maintain RoHS3 compliance?

A: SC52LC-330 and VLCF4018T-330MR42-2 are RoHS3 compliant. MP2A-330-R is RoHS compliant but not explicitly RoHS3 certified. Verify compliance requirements for your application.

Q: How do DC resistance values affect circuit performance?

A: Higher DCR increases power dissipation and reduces circuit efficiency. SC52LC-330 (455 mOhm) has the lowest DCR. VLCF4018T-330MR42-2 (540 mOhm) has the highest, resulting in approximately 18.6% greater power loss at rated current.

Q: Are physical dimensions critical for substitution?

A: Yes. SC52LC-330 (5.30mm x 5.30mm) and MP2A-330-R (7.50mm x 5.20mm) require PCB layout verification. VLCF4018T-330MR42-2 (4.00mm x 4.00mm) offers the smallest footprint and may enable space optimization.