RFS-63V471MK8#5 Equivalent & Substitute Parts

Part Overview

The RFS-63V471MK8#5 is a 470 µF, 63 V aluminum electrolytic capacitor in radial configuration manufactured by Elna America. This component belongs to the RFS/SILMIC II series and is rated for audio applications with a lifetime specification of 1000 hours at 85°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new design considerations.

Substiute Parts

RFS-63V471MK8#5

Elna AmericaIn Stock: 1049RFS-63V471MK8#5 Datasheet

Current PartRFQ

ROB-100V471MK8#

Elna AmericaIn Stock: 1141ROB-100V471MK8# Datasheet

UpgradeRFQ

UFW1J471MHD

NichiconIn Stock: 3166UFW1J471MHD Datasheet

SimilarRFQ

UKW1J471MHD

NichiconIn Stock: 1962UKW1J471MHD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RFS-63V471MK8#5 is determined by the following criteria:

Primary Substitution Criteria:

• Capacitance: 470 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package Type: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)

Secondary Compatibility Factors:

• Voltage Rating: Equal to or greater than 63 V
• Operating Temperature Range: Must encompass -40°C ~ 85°C minimum
• Physical Dimensions: Lead spacing and form factor must accommodate PCB layout constraints
• Compliance: RoHS3 compliance required

The substitute parts are grouped into two categories:

1. Upgrade Substitute (Higher Voltage Rating): ROB-100V471MK8# provides identical capacitance and tolerance with elevated voltage rating (100 V vs. 63 V), suitable for applications requiring voltage margin enhancement.

2. Equivalent Substitutes (Same Voltage Rating, Different Manufacturer): UFW1J471MHD and UKW1J471MHD are Nichicon components matching the 470 µF, 63 V specification with extended lifetime ratings (2000 Hrs @ 85°C vs. 1000 Hrs @ 85°C). These parts feature reduced physical dimensions and different lead spacing.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Form Factor):

ROB-100V471MK8# is the direct mechanical and electrical substitute for RFS-63V471MK8#5. Both components share identical lead spacing (0.295"/7.50mm), diameter (0.709"/18.00mm), and height (1.398"/35.50mm). The ROB series provides the same 470 µF capacitance and ±20% tolerance with an elevated voltage rating of 100 V. Both parts are ROHS3 compliant and rated for audio applications. The higher voltage rating of the ROB variant provides additional design margin without requiring PCB layout modifications.

For Space-Constrained Applications:

UFW1J471MHD and UKW1J471MHD are Nichicon equivalents offering the same 470 µF, 63 V specification with extended lifetime (2000 Hrs @ 85°C). These components feature reduced physical dimensions (0.492" diameter, 0.787" height) and different lead spacing (0.197"/5.00mm). Selection of these parts requires PCB layout verification to accommodate the modified lead spacing and smaller form factor. Both Nichicon parts are ROHS3 compliant and suitable for audio applications.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original RFS-63V471MK8#5. The obsolete status of the main part and "Not For New Designs" status of the Nichicon substitutes indicate these components are legacy specifications. For new design initiatives, consultation with component suppliers regarding current production alternatives is recommended.

Frequently Asked Questions (FAQ)

Q: Can ROB-100V471MK8# be used as a direct replacement for RFS-63V471MK8#5?

A: Yes. ROB-100V471MK8# is a direct mechanical and electrical substitute. Both components have identical lead spacing (7.50mm), diameter (18.00mm), and height (35.50mm). The 100 V rating of the ROB variant is compatible with circuits designed for 63 V operation, providing additional voltage margin.

Q: What is the primary difference between the Elna and Nichicon substitutes?

A: The Elna ROB-100V471MK8# maintains the original form factor (0.709" diameter, 1.398" height, 7.50mm lead spacing) while providing higher voltage rating. The Nichicon UFW1J471MHD and UKW1J471MHD offer the same voltage rating (63 V) as the original but in a smaller package (0.492" diameter, 0.787" height, 5.00mm lead spacing) with extended lifetime (2000 Hrs @ 85°C vs. 1000 Hrs @ 85°C).

Q: Can UFW1J471MHD or UKW1J471MHD be used without PCB modification?

A: No. These Nichicon components have different lead spacing (5.00mm vs. 7.50mm) and smaller physical dimensions. PCB layout verification is required before substitution. The reduced form factor may provide space benefits in compact designs but requires hole pattern and clearance confirmation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RFS-63V471MK8#5, ROB-100V471MK8#, UFW1J471MHD, and UKW1J471MHD are all ROHS3 compliant and REACH unaffected.

Q: What is the significance of the "Not For New Designs" status on Nichicon parts?

A: This designation indicates the UFW1J471MHD and UKW1J471MHD are legacy products no longer recommended for new circuit designs. These parts remain available for replacement and repair applications but should not be selected for new development projects.

Q: How do ripple current ratings compare between substitutes?

A: RFS-63V471MK8#5 specifies 1.295 A @ 120 Hz. ROB-100V471MK8# specifies 1 A @ 120 Hz. UFW1J471MHD and UKW1J471MHD specify 880 mA @ 120 Hz and 1.32 A @ 10 kHz. Circuit ripple current requirements must be verified against the selected substitute's rating.

Q: What inventory status applies to these parts?

A: RFS-63V471MK8#5 has 962 pieces in stock. ROB-100V471MK8# has 1053 pieces in stock. UFW1J471MHD has 3099 pieces in stock. UKW1J471MHD has 1947 pieces in stock. All parts are listed as new original stock.