RFS-25V471MJ6#5 Equivalent & Substitute Parts

Part Overview

The RFS-25V471MJ6#5 is a 470 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Elna America as part of the RFS/SILMIC II series. This component is rated for 1000 hours at 85°C and is designed for audio applications. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance requirements. Substitute parts must maintain the same capacitance, voltage rating, polarization, and mounting configuration while meeting current compliance standards.

Substiute Parts

RFS-25V471MJ6#5

Elna AmericaIn Stock: 1046RFS-25V471MJ6#5 Datasheet

Current PartRFQ

UFG1E471MHM

NichiconIn Stock: 1826UFG1E471MHM Datasheet

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UFW1E471MPD

NichiconIn Stock: 10308UFW1E471MPD Datasheet

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UKW1E471MPD

NichiconIn Stock: 2931UKW1E471MPD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RFS-25V471MJ6#5 is determined by strict equivalence across the following parameters:

Primary Equivalence Criteria:

• Capacitance: 470 µF (exact match required)
• Voltage Rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Type: Radial, Can (exact match required)

Secondary Compatibility Parameters:

• Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
• Lifetime @ Temperature: 1000 Hrs @ 85°C or greater
• RoHS3 Compliance (required for current production)

All three substitute parts meet these criteria. Variations in physical dimensions, ripple current ratings, and lead spacing are noted but do not disqualify substitution when the primary and secondary parameters align.

Parameter Comparison

Engineering Selection Recommendations

For Maintenance and Repair of Existing Designs:

UFG1E471MHM is the closest functional equivalent to RFS-25V471MJ6#5, matching the 1000-hour lifetime specification at 85°C. Both parts are classified as obsolete. This substitute maintains identical electrical parameters and is suitable for direct replacement in legacy audio applications where the original part is no longer available. Physical dimensions differ; PCB layout verification is required prior to installation.

For New Designs or Extended Service Life Requirements:

UFW1E471MPD and UKW1E471MPD both provide extended lifetime ratings of 2000 hours at 85°C, doubling the operational endurance of the original part. Both are classified as "Not For New Designs" but remain functionally superior alternatives. These parts are electrically equivalent and suitable for applications requiring enhanced reliability. Physical dimensions are significantly smaller than the original part, enabling space optimization in PCB layouts.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection among the three substitutes should be based on available PCB space, required lifetime performance, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can UFG1E471MHM be used as a direct replacement for RFS-25V471MJ6#5?

A: UFG1E471MHM is electrically equivalent and functionally interchangeable. Both parts share identical capacitance (470 µF), voltage rating (25 V), tolerance (±20%), operating temperature range (-40°C ~ 85°C), and lifetime specification (1000 Hrs @ 85°C). Physical dimensions differ; verify PCB layout compatibility before installation.

Q: What is the advantage of UFW1E471MPD or UKW1E471MPD over UFG1E471MHM?

A: UFW1E471MPD and UKW1E471MPD provide doubled lifetime ratings (2000 Hrs @ 85°C versus 1000 Hrs @ 85°C), extending component service life in audio applications. All three parts are electrically equivalent for the specified 470 µF, 25 V application.

Q: Are there physical dimension constraints when substituting these parts?

A: Yes. The original RFS-25V471MJ6#5 measures 0.630" diameter × 0.984" height with 0.295" lead spacing. UFG1E471MHM measures 0.492" diameter × 0.866" height with 0.197" lead spacing. UFW1E471MPD and UKW1E471MPD measure 0.394" diameter × 0.492" height with 0.197" lead spacing. PCB footprint and clearance verification is required for all substitutions.

Q: Do all substitute parts meet current compliance standards?

A: Yes. All three substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for production and distribution.

Q: Can these parts be used interchangeably in the same circuit?

A: Electrically, yes. All parts maintain the same capacitance, voltage rating, tolerance, and operating temperature range. Physical dimensions and ripple current ratings vary; circuit board layout and thermal management must be evaluated for each substitution.

Q: What is the difference between "Obsolete" and "Not For New Designs" product status?

A: Obsolete parts are no longer manufactured and unavailable from the original manufacturer. "Not For New Designs" parts are still available but manufacturers recommend against their use in new product development. Both statuses indicate limited long-term availability; inventory verification is recommended before design commitment.