RFS-25V100ME3#5 Equivalent & Substitute Parts

Part Overview

The RFS-25V100ME3#5 is a 10 µF, 25 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 35 mA at 120 Hz.

The RFS-25V100ME3#5 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy equipment.

Key Parameters

Parameter	Value
Capacitance	10 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	35 mA
Lead Spacing	0.079" (2.00 mm)
Case Diameter	0.197" (5.00 mm)
Height (Seated Max)	0.492" (12.50 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RFS-25V100ME3#5 is determined by the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 10 µF (exact match required)
Tolerance: ±20% (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.079" (2.00 mm) (exact match required)
Case Diameter: 0.197" (5.00 mm) (exact match required)
Polarization: Polar (exact match required)

Allowable Upgrade Parameters:

Voltage Rating: 25 V or higher (upgrades to 35 V, 50 V, or 63 V are acceptable)
Lifetime @ Temperature: 1000 Hrs @ 85°C or longer (upgrades to 2000 Hrs @ 85°C, 2000 Hrs @ 105°C, or 5000 Hrs @ 105°C are acceptable)
Operating Temperature Range: -40°C ~ 85°C or wider (upgrades to -55°C ~ 105°C or -40°C ~ 105°C are acceptable)
Ripple Current: 35 mA @ 120 Hz or higher (upgrades are acceptable)
Height: 0.492" (12.50 mm) or less (downgrades to 0.433" or 0.472" are acceptable)

Substitute parts must maintain identical mechanical footprint compatibility and electrical characteristics at or above the original specifications. All substitute parts listed are ROHS3 compliant and meet the same regulatory requirements as the original component.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Height (Max)	Product Status
RFS-25V100ME3#5	Elna America	10 µF	25 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	35 mA	0.492" (12.50 mm)	Obsolete
515D106M025JA6AE3	Vishay Sprague	10 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	33 mA	0.433" (11.00 mm)	Obsolete
515D106M035JA6AE3	Vishay Sprague	10 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	36 mA	0.433" (11.00 mm)	Obsolete
515D106M050JA6AE3	Vishay Sprague	10 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	44 mA	0.433" (11.00 mm)	Obsolete
515D106M063JA6AE3	Vishay Sprague	10 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	70 mA	0.433" (11.00 mm)	Obsolete
517D106M050JA6AE3	Vishay Sprague	10 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	50 mA	0.433" (11.00 mm)	Obsolete
EEU-EB1H100S	Panasonic Electronic Components	10 µF	50 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	27 mA	0.472" (12.00 mm)	Active
EEU-EB1J100S	Panasonic Electronic Components	10 µF	63 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	30 mA	0.472" (12.00 mm)	Active
EEU-FC1H100L	Panasonic Electronic Components	10 µF	50 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	81.25 mA	0.472" (12.00 mm)	Active
UFW1H100MDD	Nichicon	10 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	65 mA	0.492" (12.50 mm)	Obsolete
UFW1J100MDD	Nichicon	10 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	70 mA	0.492" (12.50 mm)	Obsolete

Engineering Selection Recommendations

For Direct Mechanical and Electrical Compatibility (Same Height Profile):

The UFW1H100MDD and UFW1J100MDD from Nichicon maintain the identical seated height of 0.492" (12.50 mm) as the original RFS-25V100ME3#5. These parts are suitable for applications where PCB layout constraints require exact height matching. Both are obsolete but available in inventory. UFW1H100MDD provides 50 V rating with 2000 Hrs @ 85°C lifetime, while UFW1J100MDD provides 63 V rating with the same lifetime specification.

For Extended Operational Lifetime and Temperature Range:

The EEU-EB1H100S and EEU-EB1J100S from Panasonic Electronic Components offer significantly extended lifetime ratings of 5000 Hrs @ 105°C with operating temperature range of -40°C ~ 105°C. These components are currently active products. EEU-EB1H100S is rated at 50 V, and EEU-EB1J100S is rated at 63 V. Height is 0.472" (12.00 mm), which is within acceptable tolerance for most through-hole applications.

For Automotive Applications with Enhanced Ripple Current Capability:

The EEU-FC1H100L from Panasonic Electronic Components carries AEC-Q200 automotive qualification and provides the highest ripple current capability at 81.25 mA @ 120 Hz. This part is rated at 50 V with 1000 Hrs @ 105°C lifetime and operating temperature range of -55°C ~ 105°C. It is currently an active product suitable for automotive and industrial applications requiring extended temperature performance.

For Compact PCB Layouts (Reduced Height):

The Vishay Sprague 515D series (515D106M025JA6AE3, 515D106M035JA6AE3, 515D106M050JA6AE3, 515D106M063JA6AE3) offers reduced seated height of 0.433" (11.00 mm), enabling more compact board designs. These parts provide 2000 Hrs @ 85°C lifetime with voltage ratings from 25 V to 63 V. All are obsolete but available in inventory.

For Extended Temperature Operation Beyond 85°C:

The 517D106M050JA6AE3 from Vishay Sprague extends the operating temperature range to -55°C ~ 105°C with 2000 Hrs @ 105°C lifetime rating. This part is rated at 50 V and maintains the compact 0.433" (11.00 mm) height profile.

All substitute parts are ROHS3 compliant and meet REACH requirements equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the original 25 V specification?

A: Yes. Voltage rating upgrades are acceptable substitutions. A 35 V, 50 V, or 63 V rated capacitor will function correctly in a circuit designed for 25 V operation. The higher voltage rating provides additional safety margin and does not negatively impact circuit performance.

Q: What is the significance of the lifetime rating difference between 1000 Hrs @ 85°C and 2000 Hrs @ 85°C?

A: Lifetime rating indicates the expected operational duration at the specified temperature before capacitance degradation reaches 80% of the initial value. A 2000 Hrs rating provides twice the operational life compared to 1000 Hrs at the same temperature. For applications requiring extended service life or operating in high-temperature environments, selecting a substitute with higher lifetime rating is beneficial.

Q: Are there mechanical compatibility concerns when substituting parts with different heights?

A: The original RFS-25V100ME3#5 has a seated height of 0.492" (12.50 mm). Substitute parts with heights of 0.433" (11.00 mm) or 0.472" (12.00 mm) are mechanically compatible for through-hole mounting on standard PCBs. Reduced height does not create compatibility issues. Verify clearance above the component if space constraints exist.

Q: What does "obsolete" product status mean for substitute selection?

A: Obsolete status indicates the manufacturer has discontinued production. However, obsolete parts may remain available through inventory channels. Active status products are currently manufactured and offer better long-term supply assurance. When possible, selecting active products such as EEU-EB1H100S, EEU-EB1J100S, or EEU-FC1H100L provides superior supply chain continuity.

Q: Can I substitute the RFS-25V100ME3#5 with a part rated for a lower voltage?

A: No. Voltage rating downgrades are not acceptable. A capacitor rated below 25 V will not provide adequate voltage withstand capability and may fail prematurely or catastrophically in the original circuit.

Q: What is the difference between the Panasonic EB-A series and FC series?

A: The EB-A series (EEU-EB1H100S, EEU-EB1J100S) is designed for general-purpose applications with 5000 Hrs @ 105°C lifetime. The FC series (EEU-FC1H100L) carries AEC-Q200 automotive qualification and is specifically rated for automotive applications with 1000 Hrs @ 105°C lifetime. The FC series provides higher ripple current capability (81.25 mA @ 120 Hz) compared to EB-A series (27-30 mA @ 120 Hz).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and meet the same regulatory requirements as the original RFS-25V100ME3#5 component.

Q: What does lead spacing of 0.079" (2.00 mm) mean?

A: Lead spacing refers to the distance between the two radial leads of the capacitor. All substitute parts maintain this identical 0.079" (2.00 mm) spacing, ensuring compatibility with existing PCB footprints designed for the original component.

Q: Can ripple current differences affect circuit performance?

A: Ripple current rating indicates the maximum AC current the capacitor can handle without exceeding temperature limits. Substitute parts with equal or higher ripple current ratings are fully compatible. Parts with lower ripple current ratings may experience elevated internal temperatures if the circuit demands exceed the rated value.

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