SCB63C-6R8 Equivalent & Substitute Parts

Part Overview

The SCB63C-6R8 is a 6.8 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 2.4 A continuous current with a maximum DC resistance of 75 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain the same inductance value, shielding characteristics, and surface mount package footprint while accommodating variations in current rating, DC resistance, and operating temperature range within acceptable design margins.

Substiute Parts

SCB63C-6R8

Signal TransformerIn Stock: 920SCB63C-6R8 Datasheet

Current PartRFQ

PG0087.682NLT

Pulse ElectronicsIn Stock: 1695PG0087.682NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCB63C-6R8 is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 6.8 µH (exact match required)
• Shielding type: Shielded (electromagnetic containment requirement)
• Mounting technology: Surface Mount (PCB assembly compatibility)
• Package footprint: 0.244" L x 0.244" W / 6.20mm x 6.20mm (board layout constraint)

Allowable Variation Parameters:

• Current Rating: Substitute must meet or exceed the application current requirement
• DC Resistance: Substitute with higher DCR is acceptable if thermal and efficiency margins permit
• Operating Temperature: Substitute range must encompass or exceed the application temperature envelope
• Tolerance: Inductance tolerance variation is acceptable within design specification limits
• Product Status: Active status preferred for long-term availability; obsolete status acceptable only if inventory is confirmed

The PG0087.682NLT from Pulse Electronics meets all primary matching parameters and is classified as an active product, ensuring sustained availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Current Rating Limitation

The PG0087.682NLT substitute is rated for a maximum continuous current of 1.5 A, compared to the SCB63C-6R8 rating of 2.4 A. This represents a 37.5% reduction in current capacity. Substitution is viable only when the application circuit operates at or below 1.5 A continuous current. If the design requires the full 2.4 A capability of the original part, this substitute is not suitable.

Secondary Consideration: DC Resistance Impact

The substitute exhibits a maximum DC resistance of 105 mOhm compared to 75 mOhm in the original part. The 30 mOhm increase results in proportionally higher resistive losses. For applications sensitive to power dissipation or thermal management, this parameter difference must be evaluated against design margins.

Compliance and Availability

Both parts maintain ROHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating. The PG0087.682NLT is classified as an active product with confirmed inventory of 1,680 units, providing sustained procurement availability. The SCB63C-6R8 is obsolete with limited remaining inventory of 846 units.

Physical Compatibility

The substitute maintains identical package footprint (6.20mm x 6.20mm) and mounting type, ensuring direct PCB layout compatibility. The substitute is 1.00 mm lower in seated height, which may provide additional clearance in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the PG0087.682NLT directly replace the SCB63C-6R8 in all applications?

A: No. The substitute is suitable only for applications operating at 1.5 A or below. If your circuit requires the full 2.4 A rating of the original part, this substitute cannot be used without circuit redesign or alternative component selection.

Q: What is the impact of the higher DC resistance in the substitute?

A: The PG0087.682NLT has 30 mOhm higher maximum DC resistance (105 mOhm vs. 75 mOhm). This increases resistive power loss proportionally. Calculate the additional heat dissipation using P = I²R and verify that thermal design margins remain acceptable for your application.

Q: Are the package footprints identical?

A: Yes. Both parts use a 6.20mm x 6.20mm surface mount package with identical lateral dimensions. The substitute is 1.00 mm lower in seated height (2.00 mm vs. 3.00 mm), which is compatible with standard PCB assembly processes.

Q: What compliance certifications apply to both parts?

A: Both the SCB63C-6R8 and PG0087.682NLT are ROHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity rating (MSL 1). Both are suitable for regulated and commercial applications requiring these certifications.

Q: Why is the substitute classified as active while the original is obsolete?

A: The SCB63C-6R8 has been discontinued by Signal Transformer and is no longer manufactured. The PG0087.682NLT from Pulse Electronics remains in active production with confirmed inventory, ensuring availability for new designs and ongoing support.

Q: Can I use the substitute if my application current is between 1.5 A and 2.4 A?

A: No. Operating the PG0087.682NLT above its 1.5 A rating will cause saturation and potential component failure. If your application requires current between 1.5 A and 2.4 A, you must identify an alternative substitute with a higher current rating or redesign the circuit to operate within the 1.5 A limit.