SC63CB-330 Equivalent & Substitute Parts

Part Overview

The SC63CB-330 is a 33 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.5 A continuous current with a maximum DC resistance of 169 mOhm. This component is classified as Active product status and is RoHS3 compliant. Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative qualified inductors sharing identical core specifications and performance parameters.

Substiute Parts

SC63CB-330

Signal TransformerIn Stock: 899SC63CB-330 Datasheet

Current PartRFQ

DR73-330-R

Eaton - Electronics DivisionIn Stock: 6215DR73-330-R Datasheet

MFR RecommendedRFQ

DR74-330-R

Eaton - Electronics DivisionIn Stock: 71041DR74-330-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC63CB-330 is determined by the following mandatory parameters:

• Inductance value: 33 µH (exact match required)
• Inductance tolerance: ±20% (exact match required)
• Shielding classification: Shielded (exact match required)
• Operating temperature range: -40°C ~ 125°C (exact match required)
• Mounting type: Surface Mount (exact match required)
• Packaging format: Tape & Reel (TR) (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

The substitute parts DR73-330-R and DR74-330-R meet all mandatory substitution criteria. Both are manufactured by Eaton - Electronics Division, feature identical inductance specifications, shielding, temperature ratings, and compliance certifications. Variations in current rating, saturation current, and DC resistance are within acceptable engineering tolerances for this product category and do not preclude substitution when circuit design permits.

Parameter Comparison

Engineering Selection Recommendations

Both DR73-330-R and DR74-330-R are qualified substitutes for the SC63CB-330 based on matching electrical specifications, identical inductance values, and equivalent compliance certifications. All three parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment and supply chain continuity.

DR74-330-R presents the optimal substitute option due to its superior current rating of 1.41 A, which approaches the original 1.5 A specification more closely than DR73-330-R at 1.31 A. Additionally, DR74-330-R exhibits lower DC resistance at 143 mOhm compared to the SC63CB-330 at 169 mOhm, resulting in reduced power dissipation and improved thermal performance in equivalent circuit applications.

DR73-330-R remains a valid alternative when supply availability or cost considerations are primary factors, provided circuit design accommodates the reduced current rating of 1.31 A and the marginally higher DC resistance of 166 mOhm.

Frequently Asked Questions (FAQ)

Q: Can DR73-330-R and DR74-330-R be used interchangeably with SC63CB-330?

A: Yes, both parts meet the mandatory substitution criteria: identical 33 µH inductance, ±20% tolerance, shielded configuration, -40°C to 125°C operating range, surface mount packaging, and ROHS3 compliance. Circuit design must verify that the current rating and DC resistance variations are acceptable for the intended application.

Q: What is the primary difference between DR73-330-R and DR74-330-R?

A: DR74-330-R provides higher current rating (1.41 A vs. 1.31 A) and lower DC resistance (143 mOhm vs. 166 mOhm), making it the closer electrical match to the SC63CB-330. Both maintain identical inductance and compliance specifications.

Q: Are there physical size differences between these parts?

A: SC63CB-330 measures 6.30mm × 6.20mm with 4.60mm seated height. Both DR73-330-R and DR74-330-R measure 7.60mm × 7.60mm, with DR73-330-R at 4.65mm and DR74-330-R at 4.35mm seated height. PCB layout and thermal clearance must accommodate these dimensional variations.

Q: Do all three parts share identical compliance certifications?

A: Yes. SC63CB-330, DR73-330-R, and DR74-330-R are all ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity). ECCN and HTSUS classifications are equivalent across all three parts.

Q: Which substitute should be selected for new designs?

A: DR74-330-R is recommended for new designs due to superior current rating and lower DC resistance, providing better performance margin and thermal characteristics while maintaining full compatibility with the SC63CB-330 specification envelope.