RFS-50V4R7ME3#5 Equivalent & Substitute Parts

Part Overview

The RFS-50V4R7ME3#5 is a 4.7 µF 50 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
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.079" (2.00 mm)
Diameter	0.197" (5.00 mm)
Height (Max)	0.492" (12.50 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RFS-50V4R7ME3#5 is determined by the following critical parameters:

Primary Substitution Criteria:

Capacitance: 4.7 µF (exact match required)
Voltage Rating: 50 V minimum (equal or higher voltage acceptable)
Tolerance: ±20% (equal or tighter tolerance acceptable)
Package: Radial, Can with 0.079" (2.00 mm) lead spacing
Mounting: Through Hole
Polarization: Polar

Secondary Compatibility Factors:

Operating temperature range must encompass application requirements
Lifetime rating at operating temperature
Physical dimensions must fit PCB footprint
RoHS3 compliance required

Substitute parts are grouped into three categories: Direct Substitutes (identical electrical and mechanical specifications), Upgrade Substitutes (enhanced performance characteristics such as extended lifetime or higher temperature rating), and Similar Parts (compatible but with parameter variations).

Parameter Comparison

Parameter	RFS-50V4R7ME3#5	UKT1H4R7MDD	EEU-EB1H4R7S	EEU-EB1J4R7S	EEU-FC1H4R7	SEK4R7M063ST	UKL1H4R7KDDANA	UPW2A4R7MDD	UKW1H4R7MDD
Manufacturer	Elna America	Nichicon	Panasonic	Panasonic	Panasonic	Cornell Dubilier	Nichicon	Nichicon	Nichicon
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Voltage Rating	50 V	50 V	50 V	63 V	50 V	63 V	50 V	100 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±10%	±20%	±20%
Lifetime @ Temp	1000 Hrs @ 85°C	1000 Hrs @ 105°C	5000 Hrs @ 105°C	5000 Hrs @ 105°C	1000 Hrs @ 105°C	2000 Hrs @ 105°C	1000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 85°C
Operating Temp Range	-40°C ~ 85°C	-55°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 85°C
Lead Spacing	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)	0.079" (2.00 mm)
Diameter	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Height (Max)	0.492" (12.50 mm)	0.433" (11.00 mm)	0.472" (12.00 mm)	0.472" (12.00 mm)	0.472" (12.00 mm)	0.512" (13.00 mm)	0.433" (11.00 mm)	0.433" (11.00 mm)	0.433" (11.00 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Obsolete	Obsolete	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Equivalent Electrical and Mechanical Performance):

UKT1H4R7MDD (Nichicon) provides direct substitution with identical 4.7 µF, 50 V specifications and ±20% tolerance. This part maintains the same lead spacing and package footprint. The operating temperature range extends to 105°C, and lifetime rating increases to 1000 hours at 105°C compared to the original 1000 hours at 85°C. Product status is obsolete.

Upgrade Substitutes (Enhanced Performance):

EEU-EB1H4R7S (Panasonic) offers significant performance enhancement with 5000 hours lifetime at 105°C versus the original 1000 hours at 85°C. Voltage rating remains 50 V with ±20% tolerance. Operating temperature range extends to 105°C. This part is active in production status. Physical dimensions are compatible with the original footprint.

EEU-FC1H4R7 (Panasonic) is rated for automotive applications (AEC-Q200) with 1000 hours at 105°C lifetime. Voltage rating is 50 V with ±20% tolerance. Operating temperature range is -55°C to 105°C. This part is active in production status and provides enhanced ripple current handling (61.75 mA @ 120 Hz and 95 mA @ 100 kHz).

Higher Voltage Alternatives:

EEU-EB1J4R7S (Panasonic) provides 4.7 µF at 63 V rating with 5000 hours at 105°C lifetime. This part is suitable for applications requiring higher voltage margin. Active production status.

SEK4R7M063ST (Cornell Dubilier) provides 4.7 µF at 63 V rating with 2000 hours at 105°C lifetime. Active production status.

Higher Voltage Upgrade:

UPW2A4R7MDD (Nichicon) provides 4.7 µF at 100 V rating with 2000 hours at 105°C lifetime. This part is suitable for applications requiring significantly higher voltage margin. Operating temperature range is -55°C to 105°C. Product status is obsolete.

Tighter Tolerance Alternative:

UKL1H4R7KDDANA (Nichicon) provides 4.7 µF at 50 V with ±10% tolerance (tighter than the original ±20%). Lifetime rating is 1000 hours at 105°C. Operating temperature range is -40°C to 105°C. Product status is obsolete.

Similar Performance (Same Voltage, Extended Lifetime):

UKW1H4R7MDD (Nichicon) provides 4.7 µF at 50 V with ±20% tolerance and 2000 hours at 85°C lifetime. Operating temperature range is -40°C to 85°C. Product status is obsolete. Physical dimensions are compatible.

Frequently Asked Questions (FAQ)

Q: Can UKT1H4R7MDD directly replace RFS-50V4R7ME3#5?

A: Yes. UKT1H4R7MDD is a direct substitute with identical capacitance (4.7 µF), voltage rating (50 V), tolerance (±20%), and package specifications. Lead spacing, diameter, and mounting type are identical. The part fits the same PCB footprint.

Q: What is the advantage of using EEU-EB1H4R7S instead of the original part?

A: EEU-EB1H4R7S provides extended lifetime (5000 hours at 105°C versus 1000 hours at 85°C) while maintaining identical electrical specifications (4.7 µF, 50 V, ±20%). The part is in active production status, ensuring long-term availability. Operating temperature range extends to 105°C.

Q: Can I use a 63 V rated capacitor in place of the 50 V original?

A: Yes. EEU-EB1J4R7S and SEK4R7M063ST both provide 4.7 µF at 63 V rating, which is compatible with 50 V circuit requirements. Higher voltage ratings provide additional safety margin. Both parts maintain ±20% tolerance and identical package specifications.

Q: What is the difference between EEU-FC1H4R7 and EEU-EB1H4R7S?

A: Both parts provide 4.7 µF at 50 V with 1000 hours lifetime at 105°C. EEU-FC1H4R7 is rated for automotive applications (AEC-Q200) and provides higher ripple current handling (61.75 mA @ 120 Hz and 95 mA @ 100 kHz). EEU-EB1H4R7S provides 5000 hours lifetime at 105°C and is rated for general purpose applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the original RFS-50V4R7ME3#5.

Q: Which substitute part has the tightest tolerance?

A: UKL1H4R7KDDANA provides ±10% tolerance compared to the original ±20%. This part is suitable for applications requiring tighter capacitance tolerance control.

Q: Can I use UPW2A4R7MDD in a 50 V circuit?

A: Yes. UPW2A4R7MDD is rated for 100 V, which exceeds the 50 V requirement. The higher voltage rating provides additional safety margin. Capacitance remains 4.7 µF with ±20% tolerance. Physical dimensions are compatible with the original footprint.

Q: What is the height difference between substitute parts?

A: Original RFS-50V4R7ME3#5 height is 0.492" (12.50 mm). Most substitutes are shorter: UKT1H4R7MDD, UKL1H4R7KDDANA, and UPW2A4R7MDD are 0.433" (11.00 mm). EEU-EB1H4R7S and EEU-FC1H4R7 are 0.472" (12.00 mm). SEK4R7M063ST is 0.512" (13.00 mm). Verify PCB clearance for height-sensitive applications.

Q: Which substitute parts are currently in active production?

A: EEU-EB1H4R7S, EEU-EB1J4R7S, EEU-FC1H4R7, and SEK4R7M063ST are in active production status. All other substitutes are obsolete.

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