SCRH64B-470 Equivalent & Substitute Parts

Part Overview

The SCRH64B-470 is a 47 µH shielded inductor manufactured by Signal Transformer, rated for 620 mA with a maximum DC resistance of 520mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across the industrial temperature range of -40°C to 125°C and is packaged in a nonstandard surface mount configuration.

Substiute Parts

SCRH64B-470

Signal TransformerIn Stock: 807SCRH64B-470 Datasheet

Current PartRFQ

7447785147

Würth ElektronikIn Stock: 12107447785147 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCRH64B-470 are identified based on the following critical electrical and mechanical parameters:

• Inductance Value: 47 µH (primary functional requirement)
• Current Rating: Minimum 620 mA to maintain equivalent current handling capability
• DC Resistance: Maximum 520 mOhm to ensure comparable power dissipation characteristics
• Shielding: Shielded configuration for electromagnetic interference control
• Operating Temperature: -40°C to 125°C compatibility
• Mounting Type: Surface mount configuration
• Compliance: ROHS3 compliance and MSL Level 1 rating

The Würth Elektronik 7447785147 meets these substitution criteria with enhanced electrical performance characteristics while maintaining functional equivalence in the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 7447785147 is the qualified substitute for the obsolete SCRH64B-470. This part exceeds the minimum electrical requirements of the original component with a higher current rating (850 mA versus 620 mA) and improved saturation current (740 mA versus 620 mA). Both components maintain identical inductance values, equivalent operating temperature ranges, and full ROHS3 compliance with MSL Level 1 ratings.

The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity. The physical footprint is slightly smaller, which may provide layout optimization benefits in space-constrained applications. DC resistance remains within acceptable parameters for equivalent thermal performance.

Frequently Asked Questions (FAQ)

Q: Can the 7447785147 directly replace the SCRH64B-470 in existing designs?

A: Yes. Both components share identical inductance values (47 µH), equivalent operating temperature ranges (-40°C to 125°C), and shielded surface mount configurations. The substitute part exceeds the original current rating specification, making it functionally compatible for the specified application envelope.

Q: What are the physical dimension differences between these parts?

A: The SCRH64B-470 measures 6.50mm L x 6.40mm W x 5.20mm H, while the 7447785147 measures 6.20mm L x 5.90mm W x 3.30mm H. The substitute is slightly smaller in all dimensions, which may require PCB layout verification for clearance and thermal management considerations.

Q: Are there compliance or certification differences?

A: Both parts are ROHS3 compliant with MSL Level 1 ratings. The substitute part carries AEC-Q200 qualification, indicating automotive-grade reliability testing. Both components are REACH unaffected with identical ECCN and HTSUS classifications.

Q: How do the DC resistance specifications compare?

A: The SCRH64B-470 specifies 520 mOhm maximum DC resistance, while the 7447785147 specifies 600 mOhm maximum. This 80 mOhm difference results in minimal additional power dissipation and remains within acceptable parameters for equivalent thermal performance in most applications.

Q: What is the inductance tolerance difference?

A: The original part specifies ±20% tolerance, while the substitute specifies ±25% tolerance. This wider tolerance on the substitute part remains acceptable for applications where the original ±20% specification was not a critical design constraint.