SCB63C-680 Equivalent & Substitute Parts

Part Overview

The SCB63C-680 is a 68 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications with a current rating of 800 mA and maximum DC resistance of 473mOhm. This component is classified as obsolete, making identification of suitable substitutes 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-680

Signal TransformerIn Stock: 1129SCB63C-680 Datasheet

Current PartRFQ

SCRH5D18-680

Signal TransformerIn Stock: 980SCRH5D18-680 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SCRH5D18-680 qualifies as a substitute for the SCB63C-680 based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Inductance value: 68 µH (identical)
• Shielding: Shielded (identical)
• Operating temperature range: -40°C to 125°C (identical)
• Mounting type: Surface Mount (identical)
• Package dimensions: 6.20mm L x 6.20mm W (identical)
• RoHS compliance: ROHS3 Compliant (identical)
• Moisture sensitivity level: 1 (Unlimited) (identical)

Allowable Parameter Variations:

• Current rating: 620 mA (substitute) vs. 800 mA (original) — acceptable for applications requiring ≤620 mA
• DC resistance: 840mOhm Max (substitute) vs. 473mOhm Max (original) — higher resistance acceptable for lower-power applications
• Saturation current: 430mA (substitute) vs. 270mA (original) — higher saturation current provides improved headroom
• Inductance tolerance: ±30% (substitute) vs. ±20% (original) — wider tolerance acceptable where circuit design permits
• Height: 2.00mm (substitute) vs. 3.00mm (original) — reduced height compatible with space-constrained layouts

Parameter Comparison

Engineering Selection Recommendations

The SCRH5D18-680 is the designated substitute for the obsolete SCB63C-680. Selection of this substitute is appropriate when circuit requirements align with the reduced current rating of 620 mA. Both components maintain identical inductance values, shielding characteristics, and operating temperature specifications, ensuring functional compatibility in equivalent thermal and electromagnetic environments.

The substitute part carries active product status from Signal Transformer, ensuring continued availability and supply chain stability. Both components satisfy ROHS3 compliance and REACH unaffected classifications, maintaining regulatory alignment for industrial and commercial applications.

The reduced height profile of the SCRH5D18-680 (2.00mm vs. 3.00mm) provides layout flexibility for space-constrained PCB designs. The higher DC resistance of the substitute (840mOhm Max vs. 473mOhm Max) requires circuit-level evaluation to confirm acceptable power dissipation and voltage drop characteristics within the application's operational parameters.

Frequently Asked Questions (FAQ)

Q: Can the SCRH5D18-680 directly replace the SCB63C-680 in all applications?

A: Direct replacement is valid only for applications where the circuit current requirement does not exceed 620 mA. The substitute part's reduced current rating and increased DC resistance must be evaluated against the specific circuit design to confirm compatibility.

Q: What is the significance of the different inductance tolerances?

A: The original SCB63C-680 specifies ±20% tolerance, while the SCRH5D18-680 specifies ±30% tolerance. Applications with tight inductance value requirements must account for this wider tolerance band in the substitute part.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts share identical footprint dimensions (6.20mm L x 6.20mm W), ensuring PCB pad compatibility. The substitute part is 1.00mm shorter in height, which may require verification of clearance constraints in the specific assembly.

Q: What compliance certifications apply to both parts?

A: Both the SCB63C-680 and SCRH5D18-680 are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance for industrial and commercial markets.

Q: Why is the saturation current higher in the substitute part?

A: The SCRH5D18-680 exhibits higher saturation current (430mA vs. 270mA), indicating improved magnetic core performance and reduced risk of saturation at equivalent current levels within the substitute's 620 mA rating.