RFS-35V4R7ME3#5 Equivalent & Substitute Parts

Part Overview

The RFS-35V4R7ME3#5 is a 4.7 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Elna America. This component is rated for 1000 hours at 85°C and is designed for audio applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Tolerance	±20%
Voltage - Rated	35 V
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Lead Spacing	0.079" (2.00 mm)
Size / Dimension	0.197" Dia (5.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RFS-35V4R7ME3#5 is determined by the following critical parameters:

Core Electrical Parameters:

Capacitance: 4.7 µF (exact match required)
Tolerance: ±20% (acceptable range)
Voltage Rating: Minimum 35 V (equal or higher voltage ratings are acceptable)
Polarization: Polar (must match)

Physical & Mechanical Parameters:

Lead Spacing: 0.079" (2.00 mm) (exact match required for PCB compatibility)
Size / Dimension: 0.197" Dia (5.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)

Thermal & Reliability Parameters:

Operating Temperature Range: Must support -40°C minimum and 85°C maximum
Lifetime @ Temperature: 1000 Hrs @ 85°C or higher thermal performance acceptable

Compliance:

RoHS Status: ROHS3 Compliant (required)

Substitute parts are grouped into two categories:

Direct Substitutes (Voltage-Rated Upgrades): Parts with identical capacitance, tolerance, physical dimensions, and lead spacing, but with equal or higher voltage ratings and equal or superior thermal performance. These include UKT1V4R7MDD (35 V), EEU-EB1H4R7S (50 V), EEU-EB1J4R7S (63 V), and SEK4R7M063ST (63 V).

Compatible Alternatives (Higher Voltage Ratings): Parts meeting all core parameters but with voltage ratings exceeding 35 V. These include UKT1H4R7MDD (50 V), EEU-FC1H4R7 (50 V), UKL1H4R7KDDANA (50 V), UKW1H4R7MDD (50 V), UKW2A4R7MDD (100 V), and UPW2A4R7MDD (100 V).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Size Dia	Height (Max)	Product Status	RoHS Status
RFS-35V4R7ME3#5	Elna America	4.7 µF	±20%	35 V	1000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
UKT1V4R7MDD	Nichicon	4.7 µF	±20%	35 V	1000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete	ROHS3
EEU-EB1H4R7S	Panasonic	4.7 µF	±20%	50 V	5000 Hrs @ 105°C	-40°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.472" (12.00 mm)	Active	ROHS3
EEU-EB1J4R7S	Panasonic	4.7 µF	±20%	63 V	5000 Hrs @ 105°C	-40°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.472" (12.00 mm)	Active	ROHS3
EEU-FC1H4R7	Panasonic	4.7 µF	±20%	50 V	1000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.472" (12.00 mm)	Active	ROHS3
SEK4R7M063ST	Cornell Dubilier Electronics	4.7 µF	±20%	63 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.512" (13.00 mm)	Active	ROHS3
UKT1H4R7MDD	Nichicon	4.7 µF	±20%	50 V	1000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete	ROHS3
UKL1H4R7KDDANA	Nichicon	4.7 µF	±10%	50 V	1000 Hrs @ 105°C	-40°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete	ROHS3
UKW1H4R7MDD	Nichicon	4.7 µF	±20%	50 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete	ROHS3
UKW2A4R7MDD	Nichicon	4.7 µF	±20%	100 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete	ROHS3
UPW2A4R7MDD	Nichicon	4.7 µF	±20%	100 V	2000 Hrs @ 105°C	-55°C ~ 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.433" (11.00 mm)	Obsolete	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs):

EEU-EB1H4R7S and EEU-EB1J4R7S (Panasonic EB-A series) are active products with superior thermal performance (5000 Hrs @ 105°C) compared to the original RFS-35V4R7ME3#5. Both maintain identical capacitance, tolerance, lead spacing, and physical diameter. EEU-EB1H4R7S provides 50 V rating with height of 0.472", while EEU-EB1J4R7S provides 63 V rating with the same height. Both are ROHS3 compliant and suitable for direct replacement in audio applications.

EEU-FC1H4R7 (Panasonic FC series) is an active automotive-grade product (AEC-Q200 rated) with 50 V rating and extended operating temperature range (-55°C ~ 105°C). This part is suitable for applications requiring automotive qualification or enhanced reliability. Height is 0.472".

Secondary Substitutes (Obsolete Status, Available Inventory):

UKT1V4R7MDD (Nichicon UKT series) matches the original 35 V rating exactly with identical capacitance and tolerance. Operating temperature range extends to -55°C ~ 105°C with 1000 Hrs @ 105°C lifetime. Height is 0.433", which is 0.059" shorter than the original. This part is suitable for direct electrical replacement where PCB height constraints permit.

UKT1H4R7MDD (Nichicon UKT series) provides 50 V rating with 1000 Hrs @ 105°C lifetime and extended temperature range (-55°C ~ 105°C). Height is 0.433".

SEK4R7M063ST (Cornell Dubilier SEK series) provides 63 V rating with 2000 Hrs @ 105°C lifetime. Height is 0.512", which exceeds the original by 0.020". ESR is specified at 28.23 Ohm @ 120 Hz. This part is suitable where higher voltage margin and extended lifetime are required.

Compatibility Considerations:

All substitute parts maintain the critical 0.079" (2.00 mm) lead spacing and 0.197" (5.00 mm) diameter required for PCB footprint compatibility. Height variations range from 0.433" to 0.512". Verify PCB clearance before selection, particularly for applications with height constraints.

All listed substitutes are ROHS3 compliant and suitable for applications requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute for the RFS-35V4R7ME3#5?

A: Yes. Higher voltage ratings (50 V, 63 V, 100 V) are electrically compatible with the original 35 V application. The capacitor will operate safely at voltages below its rated voltage. All substitute parts listed maintain identical capacitance (4.7 µF), tolerance (±20%), lead spacing (0.079"), and physical diameter (0.197"), ensuring PCB compatibility.

Q: What is the difference between active and obsolete product status?

A: Active products are currently manufactured and available from the supplier with ongoing production support. Obsolete products are no longer manufactured but may have remaining inventory. For new designs or long-term production, active products (EEU-EB1H4R7S, EEU-EB1J4R7S, EEU-FC1H4R7) are recommended. For maintenance or repair of existing equipment, obsolete substitutes may be used if inventory is available.

Q: Does the height difference between substitute parts affect PCB compatibility?

A: Height differences must be verified against PCB design constraints. The original RFS-35V4R7ME3#5 has a maximum seated height of 0.492". Substitute parts range from 0.433" (shorter) to 0.512" (taller). Shorter parts (0.433") provide additional clearance. The SEK4R7M063ST at 0.512" exceeds the original by 0.020" and requires clearance verification. Lead spacing (0.079") and diameter (0.197") remain constant across all substitutes, ensuring footprint compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the original RFS-35V4R7ME3#5.

Q: What is the significance of lifetime ratings (1000 Hrs @ 85°C vs. 5000 Hrs @ 105°C)?

A: Lifetime ratings indicate the expected operational duration at specified temperature conditions. The original part is rated for 1000 hours at 85°C. Substitute parts with higher lifetime ratings (such as EEU-EB1H4R7S at 5000 Hrs @ 105°C) provide extended reliability margins. Higher temperature ratings (105°C vs. 85°C) indicate the capacitor can operate reliably at elevated temperatures, extending service life in thermally demanding applications.

Q: Can I substitute UKT1V4R7MDD (35 V) for the original RFS-35V4R7ME3#5?

A: Yes. UKT1V4R7MDD matches the original voltage rating exactly (35 V) with identical capacitance (4.7 µF) and tolerance (±20%). Lead spacing and diameter are identical. The primary difference is height: UKT1V4R7MDD is 0.433" versus the original 0.492". Verify PCB clearance before selection. UKT1V4R7MDD is obsolete but has available inventory.

Q: Which substitute offers the best thermal performance?

A: EEU-EB1H4R7S and EEU-EB1J4R7S (Panasonic EB-A series) offer the highest thermal performance with 5000 Hrs @ 105°C rating, compared to the original 1000 Hrs @ 85°C. Both are active products with ongoing manufacturing support.

Q: Is the EEU-FC1H4R7 suitable for automotive applications?

A: Yes. EEU-FC1H4R7 is AEC-Q200 rated, indicating automotive qualification. This part is suitable for automotive applications requiring certified components. It provides 50 V rating, 1000 Hrs @ 105°C lifetime, and extended operating temperature range (-55°C ~ 105°C).

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