476R8SC Equivalent & Substitute Parts Reference

Part Overview

The Murata Power Solutions 476R8SC is a 6.8 µH shielded wirewound inductor rated for 4.6 A continuous current with a maximum DC resistance of 26.9 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain the specified inductance value, current rating capability, and shielding characteristics while meeting modern compliance standards.

Substiute Parts

476R8SC

Murata Power Solutions Inc.In Stock: 886476R8SC Datasheet

Current PartRFQ

78477068

Würth ElektronikIn Stock: 88478477068 Datasheet

MFR RecommendedRFQ

BPSC001313456R8M00

Pulse ElectronicsIn Stock: 818BPSC001313456R8M00 Datasheet

MFR RecommendedRFQ

BPSC001313456R8T00

Pulse ElectronicsIn Stock: 1025BPSC001313456R8T00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 476R8SC is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 6.8 µH (exact match required)
• Shielding: Shielded configuration mandatory
• Mounting: Surface mount only
• Current rating: Minimum 4.6 A continuous
• DC resistance: Maximum 26.9 mOhm preferred; values up to 25 mOhm acceptable
• Operating temperature: Minimum -40°C to 85°C range
• Package footprint: Nonstandard, 4-lead configuration

All three substitute parts meet these core electrical requirements. Tolerance variations (±20% vs. ±30%) and extended temperature ranges represent improvements over the original specification and do not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

78477068 (Würth Elektronik WE-PDA Series)

This part is the manufacturer-recommended primary substitute. It exceeds the original specification with a higher current rating (5.2 A vs. 4.6 A), lower DC resistance (25 mOhm vs. 26.9 mOhm), and extended operating temperature range (-40°C to 125°C). The part carries AEC-Q200 automotive qualification and ROHS3 compliance. Physical dimensions are comparable (12.00 × 12.00 mm footprint), though the seated height is increased to 8.30 mm. This part is suitable for applications requiring enhanced thermal performance or automotive-grade reliability.

BPSC001313456R8M00 (Pulse Electronics BPSC Series)

This substitute offers the lowest DC resistance (23 mOhm) and the most compact height profile (4.50 mm seated height). It maintains ±20% inductance tolerance and provides extended temperature operation to 125°C. Current rating is not specified in available documentation. ROHS3 and REACH compliance are confirmed. This option is optimal for space-constrained designs where minimizing component height is critical.

BPSC001313456R8T00 (Pulse Electronics BPSC Series)

This variant is functionally identical to BPSC001313456R8M00 with the exception of inductance tolerance (±30% vs. ±20%), matching the original 476R8SC specification. It provides the same low DC resistance (23 mOhm) and compact height (4.50 mm). This part is appropriate for applications where tolerance matching to the original design is required.

All three substitutes are active products with confirmed inventory availability and full compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the 78477068 be used as a direct replacement for the 476R8SC?

A: Yes. The 78477068 meets all electrical requirements with improved specifications. The increased seated height (8.30 mm vs. 5.00 mm) must be verified against PCB layout constraints. The footprint dimensions (12.00 × 12.00 mm) are compatible with the original 12.20 × 12.20 mm package.

Q: What is the difference between BPSC001313456R8M00 and BPSC001313456R8T00?

A: Both parts are electrically and mechanically identical except for inductance tolerance. BPSC001313456R8M00 specifies ±20% tolerance, while BPSC001313456R8T00 specifies ±30% tolerance, matching the original 476R8SC. Select based on circuit tolerance requirements.

Q: Are there physical footprint compatibility concerns?

A: The 476R8SC footprint is 12.20 × 12.20 mm with 5.00 mm maximum height. The Würth 78477068 is 12.00 × 12.00 mm (compatible) but 8.30 mm tall. The Pulse parts are 12.50 × 12.50 mm (slightly larger) with 4.50 mm height. Verify PCB layout clearances before selection.

Q: Do all substitutes support the same current rating?

A: The 78477068 is rated for 5.2 A, exceeding the original 4.6 A requirement. Current ratings for the Pulse parts are not specified in available documentation. For applications requiring confirmed current capacity, the Würth part is recommended.

Q: What compliance certifications apply to these substitutes?

A: All three substitutes are ROHS3 compliant and REACH unaffected. The 78477068 carries AEC-Q200 automotive qualification. All parts have MSL 1 (unlimited moisture sensitivity level).

Q: Can these parts be used in automotive applications?

A: The 78477068 is AEC-Q200 qualified for automotive use. The Pulse parts do not list automotive qualification in provided documentation. Verify application requirements before selection.