RFS-10V470ME3#5 Equivalent & Substitute Parts

Part Overview

The RFS-10V470ME3#5 is a 47 µF, 10 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 with a through-hole mounting configuration.

The RFS-10V470ME3#5 has reached obsolete product status. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and legacy system support where this capacitor is specified in original designs.

Key Parameters

Parameter	Value
Capacitance	47 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.079" (2.00 mm)
Size / Dimension	0.197" Dia (5.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RFS-10V470ME3#5 is determined by the following critical parameters:

Primary Substitution Criteria:

Capacitance: 47 µF (exact match required)
Voltage Rating: 10 V minimum (higher voltage ratings are acceptable as electrical upgrades)
Tolerance: ±20% (matching or tighter tolerance acceptable)
Polarization: Polar (must remain polar)
Mounting Type: Through Hole (must remain through hole)
Package / Case: Radial, Can (must maintain radial can form factor)
Lead Spacing: 0.079" (2.00 mm) (exact match required for PCB compatibility)
Physical Dimensions: 0.197" Dia (5.00 mm) and 0.492" Height (12.50 mm) (exact match required for mechanical fit)

Secondary Considerations:

Lifetime @ Temperature: Substitutes with equal or extended lifetime are acceptable
Operating Temperature Range: Substitutes with equal or extended range are acceptable
RoHS Compliance: All substitutes must maintain ROHS3 compliance

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (10 V Rated): Parts maintaining the original 10 V voltage rating with improved or equivalent lifetime specifications.

Category B - Voltage-Upgraded Substitutes (16 V and 25 V Rated): Parts with higher voltage ratings (16 V or 25 V) that maintain all other electrical and mechanical parameters. These provide enhanced voltage margin and are electrically compatible in applications where the original 10 V rating was not a limiting design constraint.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Size / Dimension	Height (Max)	Product Status
RFS-10V470ME3#5	Elna America	RFS / SILMIC II	47 µF	10 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Obsolete
10PK47M5X11	Rubycon	PK	47 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
10TWL47KEFC5X11	Rubycon	TWL	47 µF	10 V	±10%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
16PK47MEFC5X11	Rubycon	PK	47 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
16PX47MEFC5X11	Rubycon	PX	47 µF	16 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
16TWL47MEFC5X11	Rubycon	TWL	47 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
16YXF47MEFC5X11	Rubycon	YXF	47 µF	16 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Not For New Designs
16YXJ47M5X11	Rubycon	YXJ	47 µF	16 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
25PK47MEFC5X11	Rubycon	PK	47 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
25PX47MEFC5X11	Rubycon	PX	47 µF	25 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active
25PX47MEFCFA5X11	Rubycon	PX	47 µF	25 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00 mm)	0.197" Dia (5.00 mm)	0.492" (12.50 mm)	Active

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating):

The 10PK47M5X11 (Rubycon PK series) is the primary direct equivalent. It maintains the 10 V voltage rating, ±20% tolerance, identical physical dimensions, and lead spacing. The 10PK47M5X11 offers doubled lifetime (2000 Hrs @ 85°C versus 1000 Hrs @ 85°C) while remaining in Active product status, making it suitable for new procurement and ongoing support.

The 10TWL47KEFC5X11 (Rubycon TWL series) provides an alternative with tighter tolerance (±10% versus ±20%) and equivalent 2000 Hrs @ 85°C lifetime. This part is also in Active status and maintains identical mechanical compatibility.

For Voltage-Upgraded Applications:

When circuit design permits higher voltage operation, the 16 V and 25 V rated substitutes provide enhanced reliability margins. All 16 V and 25 V options maintain identical physical form factors and lead spacing, ensuring direct PCB compatibility.

The 16YXJ47M5X11 (Rubycon YXJ series, 16 V) offers the highest performance specification among 16 V options with 5000 Hrs @ 105°C lifetime and extended operating temperature range (-40°C ~ 105°C). This part is in Active status.

The 25PX47MEFC5X11 (Rubycon PX series, 25 V) provides 25 V rated protection with 1000 Hrs @ 105°C lifetime and extended temperature range (-55°C ~ 105°C). This part is in Active status.

Parts to Avoid for New Designs:

The 16YXF47MEFC5X11 carries "Not For New Designs" status despite superior specifications (5000 Hrs @ 105°C). This designation indicates manufacturer discontinuation plans and should not be selected for new applications.

The 25PX47MEFCFA5X11 differs from 25PX47MEFC5X11 only in lead spacing (0.197" / 5.00 mm versus 0.079" / 2.00 mm). This wider lead spacing creates PCB layout incompatibility with the original RFS-10V470ME3#5 and should be avoided unless PCB redesign is performed.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory standing.

Frequently Asked Questions (FAQ)

Q: Can I use a 16 V or 25 V rated capacitor in place of the 10 V RFS-10V470ME3#5?

A: Yes, provided the circuit design permits. Higher voltage ratings are electrically compatible in applications where the original 10 V rating was not a limiting constraint. The capacitor will function correctly at voltages up to its rated voltage. Verify that the application does not depend on the specific voltage rating for circuit operation.

Q: What is the difference between the 10PK47M5X11 and 10TWL47KEFC5X11?

A: Both are 10 V direct equivalents with identical physical dimensions and lead spacing. The primary difference is tolerance: 10PK47M5X11 has ±20% tolerance (matching the original), while 10TWL47KEFC5X11 has ±10% tolerance (tighter). Both offer 2000 Hrs @ 85°C lifetime. Select 10TWL47KEFC5X11 if tighter capacitance tolerance is required by circuit design.

Q: Why does the 25PX47MEFCFA5X11 have different lead spacing?

A: The 25PX47MEFCFA5X11 specifies 0.197" (5.00 mm) lead spacing, compared to 0.079" (2.00 mm) for all other substitutes and the original part. This wider spacing creates incompatibility with PCB layouts designed for the RFS-10V470ME3#5. Do not use this part unless PCB modification is performed.

Q: What does "Not For New Designs" mean for the 16YXF47MEFC5X11?

A: This designation indicates the manufacturer has announced discontinuation. While the part remains available in inventory, it should not be selected for new product designs or long-term applications. Use 16YXJ47M5X11 instead, which offers equivalent performance and Active status.

Q: Are all substitute parts through-hole mounted?

A: Yes. All listed substitutes maintain through-hole mounting configuration with 0.079" (2.00 mm) lead spacing (except 25PX47MEFCFA5X11, which has 0.197" spacing). Physical dimensions (0.197" diameter, 0.492" height) are identical across all recommended substitutes, ensuring direct PCB compatibility.

Q: What is the advantage of the YXJ series (16YXJ47M5X11) over the PK series (16PK47MEFC5X11)?

A: The YXJ series offers extended lifetime (5000 Hrs @ 105°C versus 2000 Hrs @ 85°C) and wider operating temperature range (-40°C ~ 105°C). Select YXJ for applications requiring higher reliability or operation at elevated temperatures. Both maintain identical physical form factors and 16 V rating.

Q: Can I mix different substitute part numbers in the same circuit board?

A: Yes, provided all selected parts meet the circuit's electrical requirements. Mixing parts with different voltage ratings (10 V, 16 V, 25 V) is acceptable. Mixing parts with different tolerances (±20% and ±10%) is acceptable if circuit design does not depend on uniform capacitance values.

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