SCB63C-180 Equivalent & Substitute Parts

Part Overview

The SCB63C-180 is an 18 µH shielded surface mount inductor rated for 1.45 A continuous current with a maximum DC resistance of 152mOhm. Manufactured by Signal Transformer, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SCB63C-180

Signal TransformerIn Stock: 1008SCB63C-180 Datasheet

Current PartRFQ

SCRH5D18-180

Signal TransformerIn Stock: 789SCRH5D18-180 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCB63C-180 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 18 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) (physical placement constraint)
• Operating temperature range: -40°C ~ 125°C (thermal environment compatibility)

Secondary Compatibility Parameters:

• Current rating tolerance: Substitute must support minimum 1.1 A continuous current
• DC resistance: Substitute DCR must not exceed 210mOhm to maintain circuit performance within acceptable limits
• Compliance certifications: ROHS3 and REACH status must be maintained

The SCRH5D18-180 meets all primary matching criteria and operates within acceptable secondary parameter ranges for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The SCRH5D18-180 is the manufacturer-recommended substitute for the obsolete SCB63C-180. Both components maintain identical inductance values, shielding characteristics, and thermal operating ranges. The substitute part is currently in active production status, ensuring long-term availability.

The SCRH5D18-180 exhibits a reduced current rating (1.1 A versus 1.45 A) and increased DC resistance (210mOhm versus 152mOhm). These parameter differences require circuit-level evaluation to confirm compatibility with the original design's current and power dissipation requirements. The substitute part's lower profile (2.00mm versus 3.00mm seated height) provides a mechanical advantage in space-constrained applications.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q: Can the SCRH5D18-180 be used as a direct replacement for the SCB63C-180?

A: The SCRH5D18-180 matches the SCB63C-180 in inductance value, shielding type, mounting technology, and package footprint. However, the reduced current rating (1.1 A versus 1.45 A) and increased DC resistance (210mOhm versus 152mOhm) require verification that the circuit design can operate within these parameter boundaries.

Q: What is the physical difference between these two parts?

A: Both parts share identical footprint dimensions (0.244" L x 0.244" W / 6.20mm x 6.20mm). The SCRH5D18-180 has a lower seated height of 0.079" (2.00mm) compared to the SCB63C-180 at 0.118" (3.00mm), allowing for reduced vertical clearance requirements in PCB assembly.

Q: Are there compliance or certification differences?

A: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity level). No compliance disadvantage exists with the substitute part.

Q: What does the inductance tolerance difference mean?

A: The SCB63C-180 has ±20% tolerance while the SCRH5D18-180 has ±30% tolerance. This wider tolerance in the substitute part may affect circuit performance in applications requiring tighter inductance control. Circuit simulation or testing is necessary to confirm acceptable performance margins.

Q: Why is the saturation current (Isat) higher on the substitute part?

A: The SCRH5D18-180 exhibits higher saturation current (850mA versus 570mA), indicating different core material or design characteristics. This parameter does not directly affect substitution compatibility but reflects the component's behavior under transient overcurrent conditions.