SCB63C-3R3 Equivalent & Substitute Parts

Part Overview

The SCB63C-3R3 is a 3.3 µH shielded inductor rated for 3 A continuous current with a maximum DC resistance of 49 mOhm, designed for surface mount applications in nonstandard packaging. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SCB63C-3R3

Signal TransformerIn Stock: 982SCB63C-3R3 Datasheet

Current PartRFQ

SCRH5D18-3R3

Signal TransformerIn Stock: 935SCRH5D18-3R3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCB63C-3R3 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.3 µH (exact match required)
• Inductance tolerance: ±30% (must be equivalent or tighter)
• Shielding type: Shielded (electromagnetic containment requirement)
• Operating temperature range: -40°C to 125°C (minimum coverage required)
• Mounting type: Surface Mount (PCB assembly compatibility)
• Physical footprint: 6.20 mm x 6.20 mm (board layout constraint)

Secondary Compatibility Factors:

• Current rating: Substitute must meet or exceed application requirements
• DC resistance: Lower or equivalent values acceptable
• RoHS compliance: ROHS3 Compliant status required
• Moisture sensitivity: MSL 1 acceptable

The SCRH5D18-3R3 qualifies as a substitute based on matching inductance, tolerance, shielding, temperature range, mounting type, and footprint dimensions. Differences in current rating and saturation current must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The SCRH5D18-3R3 is the manufacturer-recommended substitute for the obsolete SCB63C-3R3. Both components are manufactured by Signal Transformer and maintain identical inductance specifications, tolerance, shielding characteristics, and operating temperature range.

The primary distinction is the current rating: the SCB63C-3R3 supports 3 A continuous current, while the SCRH5D18-3R3 is rated for 2.15 A. Selection between these parts depends on circuit current requirements. If the application requires continuous current exceeding 2.15 A, the SCRH5D18-3R3 cannot be used as a direct substitute.

Both parts meet ROHS3 compliance and carry MSL 1 moisture sensitivity classification. The SCRH5D18-3R3 offers the advantage of active product status with established supply chain availability, whereas the SCB63C-3R3 is obsolete. The SCRH5D18-3R3 features a lower maximum seated height (2.00 mm versus 3.00 mm), which may provide board layout benefits in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the SCRH5D18-3R3 replace the SCB63C-3R3 in all applications?

A: Substitution is valid only if the application current requirement does not exceed 2.15 A continuous. The SCB63C-3R3 supports 3 A, while the SCRH5D18-3R3 is rated for 2.15 A. Verify circuit current specifications before substitution.

Q: Are the physical footprints identical?

A: Both parts share the same lateral dimensions of 6.20 mm x 6.20 mm, ensuring PCB layout compatibility. The SCRH5D18-3R3 has a lower maximum seated height of 2.00 mm compared to 3.00 mm for the SCB63C-3R3, which may affect vertical clearance in confined spaces.

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

A: The SCB63C-3R3 specifies 49 mOhm maximum DC resistance, while the SCRH5D18-3R3 specifies 50 mOhm maximum. This 1 mOhm difference is negligible for most applications and falls within typical manufacturing tolerances.

Q: Why is the SCB63C-3R3 obsolete?

A: The SCB63C-3R3 is classified as obsolete by the manufacturer. The SCRH5D18-3R3 represents the active product line continuation with equivalent electrical specifications and improved supply chain availability.

Q: Are both parts RoHS compliant?

A: Yes, both the SCB63C-3R3 and SCRH5D18-3R3 are ROHS3 compliant and carry MSL 1 moisture sensitivity classification, meeting current environmental and reliability standards.

Q: What packaging formats are available?

A: The SCB63C-3R3 uses nonstandard packaging, while the SCRH5D18-3R3 is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes.