RFS-35V470MH3#5 Equivalent & Substitute Parts Reference

Part Overview

The RFS-35V470MH3#5 is a 47 µF, 35 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 ripple current capability of 170 mA at 120 Hz.

The RFS-35V470MH3#5 carries an Obsolete product status. Locating direct replacements or functionally equivalent alternatives is necessary for ongoing maintenance, repair, and legacy system support where original stock is depleted or unavailable.

Key Parameters

Parameter	Value
Capacitance	47 µF
Voltage Rating	35 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	170 mA
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.492" (12.50 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
Polarization	Polar
Application	Audio
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RFS-35V470MH3#5 is determined by the following critical parameters:

Electrical Compatibility:

Capacitance value must be 47 µF (±20% tolerance acceptable)
Voltage rating must be equal to or greater than 35 V
Operating temperature range must encompass the application requirements

Mechanical Compatibility:

Lead spacing of 0.197" (5.00 mm) is required for PCB footprint compatibility
Case diameter of 0.394" (10.00 mm) ensures physical fit in the original mounting location
Height (seated max) of 0.492" (12.50 mm) or less prevents mechanical interference
Through-hole radial, can package format must be maintained

Performance Considerations:

Ripple current rating at 120 Hz should meet or exceed 170 mA for equivalent performance
Lifetime rating and temperature specifications determine long-term reliability in the application

Substitute parts are grouped into two categories:

Direct Equivalents (Same Voltage Rating - 35 V):

UFG1V470MPM (Nichicon UFG series)
UFW1V470MDD (Nichicon UFW series)
UKW1V470MDD (Nichicon UKW series)

These parts maintain the original 35 V voltage specification and are suitable for direct replacement in applications where the voltage rating is not a limiting factor.

Upgraded Substitutes (Higher Voltage Rating - 100 V):

UFW2A470MPD (Nichicon UFW series)
UKW2A470MPD (Nichicon UKW series)
EKZE101ELL470MJC5S (Chemi-Con KZE series)
UHE2A470MPD (Nichicon UHE series)
UVZ2A470MPD (Nichicon UVZ series)

These parts feature 100 V voltage ratings, providing additional voltage margin and improved reliability in applications where the circuit voltage permits. They maintain identical mechanical dimensions and lead spacing.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Lead Spacing	Case Diameter	Height (Max)	Product Status
RFS-35V470MH3#5	Elna America	47 µF	35 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	170 mA	0.197" (5.00 mm)	0.394" (10.00 mm)	0.492" (12.50 mm)	Obsolete
UFG1V470MPM	Nichicon	47 µF	35 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	101 mA	0.138" (3.50 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Obsolete
UFW1V470MDD	Nichicon	47 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	120 mA	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Obsolete
UKW1V470MDD	Nichicon	47 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	120 mA	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete
UFW2A470MPD	Nichicon	47 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	210 mA	0.197" (5.00 mm)	0.394" (10.00 mm)	0.492" (12.50 mm)	Not For New Designs
UKW2A470MPD	Nichicon	47 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	210 mA	0.197" (5.00 mm)	0.394" (10.00 mm)	0.492" (12.50 mm)	Not For New Designs
EKZE101ELL470MJC5S	Chemi-Con	47 µF	100 V	±20%	4000 Hrs @ 105°C	-40°C ~ 105°C	192 mA	0.197" (5.00 mm)	0.394" (10.00 mm)	0.551" (14.00 mm)	Active
UHE2A470MPD	Nichicon	47 µF	100 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	227.5 mA	0.197" (5.00 mm)	0.394" (10.00 mm)	0.492" (12.50 mm)	Not For New Designs
UVZ2A470MPD	Nichicon	47 µF	100 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	165 mA	0.197" (5.00 mm)	0.394" (10.00 mm)	0.492" (12.50 mm)	Not For New Designs

Engineering Selection Recommendations

For Direct Mechanical and Electrical Replacement:

UFW2A470MPD and UKW2A470MPD are the preferred substitutes. Both parts maintain the exact mechanical dimensions (0.197" lead spacing, 0.394" diameter, 0.492" height) and mounting configuration of the original RFS-35V470MH3#5. The 100 V voltage rating provides additional safety margin in circuits operating below 35 V. Both parts are ROHS3 compliant and carry EAR99 ECCN classification, matching the regulatory status of the original component.

For Extended Temperature and Lifetime Performance:

EKZE101ELL470MJC5S (Chemi-Con KZE series) offers superior reliability with 4000 hours lifetime at 105°C and an extended operating temperature range to 105°C. This part is currently Active in production status, ensuring long-term availability. The height dimension is 0.551" (14.00 mm), which requires verification for clearance in the original mounting location. ROHS3 compliance and EAR99 classification are maintained.

For Maximum Ripple Current Capability:

UHE2A470MPD provides the highest ripple current rating at 227.5 mA at 120 Hz and the longest lifetime specification at 7000 hours at 105°C. Mechanical dimensions are identical to the original part. This part is suitable for applications requiring enhanced current handling and thermal stability.

For Extended Temperature Range:

UVZ2A470MPD extends the operating temperature range to -55°C ~ 105°C, accommodating applications with extreme low-temperature requirements. Mechanical compatibility is maintained with identical lead spacing and case dimensions.

All recommended substitutes are ROHS3 compliant and REACH unaffected or REACH affected (UHE2A470MPD), ensuring compliance with environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can UFG1V470MPM be used as a direct replacement for RFS-35V470MH3#5?

A: UFG1V470MPM matches the electrical specifications (47 µF, 35 V, ±20%, 1000 Hrs @ 85°C) but has different mechanical dimensions. The lead spacing is 0.138" (3.50 mm) versus 0.197" (5.00 mm) on the original part, and the case diameter is 0.315" (8.00 mm) versus 0.394" (10.00 mm). This part is not suitable for direct PCB footprint replacement without layout modification.

Q: What is the advantage of using a 100 V rated capacitor instead of 35 V?

A: A 100 V rated capacitor provides additional voltage margin and typically offers improved reliability and longer operational life in the same physical package. If the circuit voltage does not exceed 35 V, the 100 V rated part operates with greater safety margin and reduced stress on the dielectric material.

Q: Are UFW2A470MPD and UKW2A470MPD interchangeable?

A: Yes. Both parts have identical electrical specifications (47 µF, 100 V, ±20%, 2000 Hrs @ 85°C) and mechanical dimensions (0.197" lead spacing, 0.394" diameter, 0.492" height). Both are manufactured by Nichicon and are ROHS3 compliant. Selection between these two can be based on availability or packaging preference.

Q: Why is EKZE101ELL470MJC5S listed as Active while other substitutes are Obsolete or Not For New Designs?

A: EKZE101ELL470MJC5S from Chemi-Con's KZE series is currently in active production, ensuring continued availability for future orders. The Obsolete and Not For New Designs status of other parts indicates limited or discontinued manufacturing, making them suitable only for maintenance and repair of existing equipment.

Q: Does the height difference of EKZE101ELL470MJC5S (0.551" vs. 0.492") affect compatibility?

A: The EKZE101ELL470MJC5S is 0.059" (1.50 mm) taller than the original part. Physical clearance in the mounting location must be verified before selection. If vertical space is constrained, UFW2A470MPD, UKW2A470MPD, UHE2A470MPD, or UVZ2A470MPD are preferred due to identical height specifications.

Q: What is the significance of the ripple current rating difference?

A: Ripple current rating indicates the maximum AC current the capacitor can handle at a specified frequency without exceeding temperature limits. The original RFS-35V470MH3#5 is rated for 170 mA at 120 Hz. Substitutes with equal or higher ripple current ratings (UFW2A470MPD at 210 mA, UHE2A470MPD at 227.5 mA) provide equivalent or enhanced performance. Parts with lower ratings (UFG1V470MPM at 101 mA, UFW1V470MDD at 120 mA) may be inadequate for high-ripple applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the environmental compliance of the original RFS-35V470MH3#5. REACH status varies: most parts are REACH Unaffected, while UHE2A470MPD is REACH Affected. Verify REACH compliance requirements for your specific application and jurisdiction.

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