RFS-16V471MI6#5 Equivalent & Substitute Parts

Part Overview

The RFS-16V471MI6#5 is a 470 µF, 16 V aluminum electrolytic capacitor in radial configuration manufactured by Elna America. This component is rated for 1000 hours at 85°C and serves audio applications. The product status is obsolete, necessitating identification of functionally compatible alternatives that meet the electrical and mechanical specifications of the original design.

Key Parameters

Parameter	RFS-16V471MI6#5
Capacitance	470 µF
Voltage Rating	16 V
Tolerance	±20%
Operating Temperature	-40°C ~ 85°C
Lifetime @ Temperature	1000 Hrs @ 85°C
Lead Spacing	0.197" (5.00mm)
Size / Dimension	0.492" Dia (12.50mm)
Height - Seated (Max)	0.984" (25.00mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
Ripple Current @ Low Frequency	710 mA @ 120 Hz
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are categorized based on the following electrical and mechanical parameters that determine functional equivalence:

Critical Parameters (Must Match):

Capacitance: 470 µF (±20% tolerance acceptable)
Polarization: Polar (Aluminum Electrolytic)
Lead Spacing: 0.197" (5.00mm)
Mounting Type: Through Hole
Package Type: Radial, Can

Flexible Parameters (Allow Variation):

Voltage Rating: May exceed original 16 V rating
Size Diameter: 0.492" (12.50mm) preferred; minor variations acceptable if board space permits
Height: Original 0.984" (25.00mm); substitute heights may vary within physical constraints
Lifetime: Substitutes may provide enhanced operational life
Operating Temperature: Extended ranges acceptable
RoHS Compliance: ROHS3 Compliant required

Upgrade Substitutes (Higher Voltage Rating):

EEU-FC1H471 (50 V)
UFW1H471MHD (50 V)
UKW1H471MHD (50 V)

Similar Substitutes (Same or Higher Voltage):

EEU-EB1J471 (63 V)
UFG1C471MPM (16 V)
UFW1C471MPD (16 V)
UKW1C471MPD (16 V)
UPW1J471MHD (63 V)

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Lead Spacing	Size Dia	Height (Max)	Lifetime @ Temp	Operating Temp Range	Product Status	RoHS Status
RFS-16V471MI6#5	Elna America	470 µF	16 V	0.197" (5.00mm)	0.492" (12.50mm)	0.984" (25.00mm)	1000 Hrs @ 85°C	-40°C ~ 85°C	Obsolete	ROHS3 Compliant
EEU-FC1H471	Panasonic	470 µF	50 V	0.197" (5.00mm)	0.492" (12.50mm)	0.984" (25.00mm)	5000 Hrs @ 105°C	-55°C ~ 105°C	Active	ROHS3 Compliant
UFW1H471MHD	Nichicon	470 µF	50 V	0.197" (5.00mm)	0.492" (12.50mm)	0.787" (20.00mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	ROHS3 Compliant
UKW1H471MHD	Nichicon	470 µF	50 V	0.197" (5.00mm)	0.492" (12.50mm)	0.787" (20.00mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	ROHS3 Compliant
EEU-EB1J471	Panasonic	470 µF	63 V	0.197" (5.00mm)	0.492" (12.50mm)	1.063" (27.00mm)	10000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
UFG1C471MPM	Nichicon	470 µF	16 V	0.197" (5.00mm)	0.394" (10.00mm)	0.866" (22.00mm)	1000 Hrs @ 85°C	-40°C ~ 85°C	Obsolete	ROHS3 Compliant
UFW1C471MPD	Nichicon	470 µF	16 V	0.138" (3.50mm)	0.315" (8.00mm)	0.453" (11.50mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	ROHS3 Compliant
UKW1C471MPD	Nichicon	470 µF	16 V	0.138" (3.50mm)	0.315" (8.00mm)	0.453" (11.50mm)	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	ROHS3 Compliant
UPW1J471MHD	Nichicon	470 µF	63 V	0.197" (5.00mm)	0.492" (12.50mm)	0.984" (25.00mm)	7000 Hrs @ 105°C	-55°C ~ 105°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Upgrade Path: EEU-FC1H471 (Panasonic) This component provides direct electrical compatibility with the RFS-16V471MI6#5 while offering a 50 V voltage rating, extended operational lifetime of 5000 hours at 105°C, and active product status. The identical mechanical footprint (0.197" lead spacing, 0.492" diameter, 0.984" height) permits direct replacement without board redesign. AEC-Q200 automotive qualification provides additional reliability assurance.

Alternative Upgrade: UPW1J471MHD (Nichicon) This part provides 63 V voltage margin with 7000-hour lifetime at 105°C and extended operating temperature range (-55°C ~ 105°C). The mechanical footprint is identical to the original specification. Product is active and ROHS3 compliant.

Space-Constrained Applications: UFW1H471MHD or UKW1H471MHD (Nichicon) When reduced height is required (0.787" versus 0.984"), these 50 V rated alternatives provide 2000-hour lifetime at 85°C. Both maintain the identical lead spacing (0.197" / 5.00mm) and diameter (0.492" / 12.50mm). Note: Both are marked "Not For New Designs."

Same-Voltage Substitutes: UFW1C471MPD or UKW1C471MPD (Nichicon) These 16 V rated alternatives provide matching voltage specification with extended 2000-hour lifetime at 85°C. However, the reduced footprint (0.138" / 3.50mm lead spacing, 0.315" / 8.00mm diameter, 0.453" / 11.50mm height) necessitates board modification and is not recommended without physical verification.

Compliance Consideration: All listed substitutes are ROHS3 compliant and maintain REACH Unaffected status, satisfying regulatory requirements for the RFS-16V471MI6#5.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1H471 be used as a direct replacement for RFS-16V471MI6#5? A: Yes. The capacitance (470 µF), tolerance (±20%), lead spacing (0.197" / 5.00mm), diameter (0.492" / 12.50mm), height (0.984" / 25.00mm), and mounting type (through-hole radial) are identical. The 50 V rating exceeds the original 16 V requirement.

Q: What is the primary advantage of upgrading to a higher voltage-rated substitute? A: Higher voltage ratings provide increased operating margin and improved reliability under electrical stress. EEU-FC1H471 at 50 V and UPW1J471MHD at 63 V both exceed the circuit's 16 V requirement, reducing stress-induced degradation.

Q: Are height variations acceptable when selecting a substitute? A: Height variations are acceptable only when confirmed through physical board layout verification. UFW1H471MHD and UKW1H471MHD at 0.787" (20.00mm) are shorter than the original 0.984" (25.00mm). Board clearance and mounting constraints must be evaluated.

Q: Why do some substitutes have reduced lead spacing? A: UFW1C471MPD and UKW1C471MPD feature 0.138" (3.50mm) lead spacing versus the original 0.197" (5.00mm). This difference requires PCB pad modification and is suitable only for new board layouts, not direct replacement.

Q: What does "Not For New Designs" mean for UFW1H471MHD, UKW1H471MHD, UFW1C471MPD, and UKW1C471MPD? A: These components remain in production but manufacturers recommend against inclusion in new designs. They are suitable for repair, field replacement, or legacy support applications but should not be selected for new product development.

Q: Is RoHS3 compliance maintained across all substitutes? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, satisfying modern regulatory requirements.

Q: How does operating temperature range affect substitute selection? A: The original RFS-16V471MI6#5 operates from -40°C to 85°C. EEU-FC1H471 and UPW1J471MHD extend this to -55°C to 105°C, providing broader environmental compatibility. UFW1H471MHD and UKW1H471MHD match the original -40°C to 85°C range.

Q: What is the significance of lifetime ratings when selecting a substitute? A: Lifetime is specified as operational hours at elevated temperature (typically 85°C or 105°C). EEU-FC1H471 provides 5000 hours at 105°C versus the original 1000 hours at 85°C, indicating significantly extended service life in high-temperature environments. This difference is critical for reliability-sensitive applications.

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