SCB63C-4R7 Equivalent & Substitute Parts

Part Overview

The SCB63C-4R7 is a 4.7 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 2.7 A continuous current with a maximum DC resistance of 63 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SCB63C-4R7

Signal TransformerIn Stock: 1100SCB63C-4R7 Datasheet

Current PartRFQ

PG0087.472NLT

Pulse ElectronicsIn Stock: 776PG0087.472NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCB63C-4R7 is determined by the following critical parameters:

Inductance Value: Must be 4.7 µH to maintain circuit functionality and impedance matching.

Shielding Configuration: Must be shielded to preserve electromagnetic isolation characteristics.

Mounting Type: Must be surface mount to ensure PCB assembly compatibility.

Package Footprint: Must maintain 6.20 mm × 6.20 mm base dimensions for land pattern compatibility.

Current Rating: The substitute must support the application's current requirements. The SCB63C-4R7 is rated for 2.7 A continuous current; substitutes with lower current ratings require circuit-level evaluation.

DC Resistance: Lower DCR values are acceptable; higher values may increase power dissipation and require thermal analysis.

Operating Temperature: Must support the required temperature range; extended ranges are acceptable.

Compliance: RoHS3 compliance is required for regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The PG0087.472NLT from Pulse Electronics is an active production equivalent for the obsolete SCB63C-4R7. Both components share identical inductance values, shielding configuration, surface mount packaging, and footprint dimensions, establishing direct functional compatibility at the PCB level.

The substitute exhibits improved inductance tolerance (±20% versus ±30%), supporting tighter circuit performance specifications. The PG0087.472NLT operates across an extended temperature range (-40°C to 130°C) and features reduced height (2.00 mm versus 3.00 mm), providing design flexibility for space-constrained applications.

Current rating represents the primary design consideration. The SCB63C-4R7 is rated for 2.7 A continuous current, while the PG0087.472NLT is rated for 1.75 A. Applications operating below 1.75 A continuous current are directly compatible. Applications requiring current between 1.75 A and 2.7 A require circuit-level thermal and performance analysis to confirm acceptability within the substitute's operating envelope.

DC resistance differential (70 mOhm versus 63 mOhm) results in approximately 11% increased power dissipation at rated current, a consideration for thermally sensitive designs.

Both components maintain ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory and manufacturing process compatibility.

Frequently Asked Questions (FAQ)

Q: Can the PG0087.472NLT directly replace the SCB63C-4R7 in all applications?

A: Direct replacement is valid for applications operating at continuous currents of 1.75 A or below. Applications requiring the full 2.7 A rating of the original part require evaluation of the substitute's thermal performance and saturation characteristics at the intended operating point.

Q: What is the impact of the current rating difference?

A: The SCB63C-4R7 supports 2.7 A continuous current; the PG0087.472NLT supports 1.75 A. The saturation current (Isat) of the substitute is 1.75 A, indicating the point at which inductance begins to degrade. Operating above this threshold introduces nonlinear behavior and reduced inductance, affecting circuit performance.

Q: Are the physical dimensions compatible?

A: Yes. Both components share identical footprint dimensions of 6.20 mm × 6.20 mm, ensuring PCB land pattern compatibility. The substitute is 1.00 mm shorter (2.00 mm versus 3.00 mm seated height), which is advantageous for space-constrained designs and does not affect electrical performance.

Q: How does the inductance tolerance difference affect circuit design?

A: The substitute offers tighter tolerance (±20% versus ±30%), reducing inductance variation across the production range. This supports more predictable circuit performance and may eliminate the need for post-assembly tuning in applications sensitive to inductance variation.

Q: Are there compliance or supply chain advantages to using the substitute?

A: The PG0087.472NLT is in active production status, ensuring long-term availability and supply continuity. The SCB63C-4R7 is obsolete, making the substitute the recommended choice for new designs and ongoing procurement.

Q: What is the significance of the DC resistance increase?

A: The substitute exhibits 7 mOhm higher maximum DC resistance (70 mOhm versus 63 mOhm). At 1.75 A, this results in approximately 0.214 mW additional power dissipation compared to the original part at the same current. For applications operating below 1.75 A, this difference is negligible.