RFS-25V101MH4#5 Equivalent & Substitute Parts

Part Overview

The RFS-25V101MH4#5 is a 100 µF, 25 V aluminum electrolytic capacitor in radial can package manufactured by Elna America as part of the RFS/SILMIC II series. This part is rated for 1000 hours at 85°C with an operating temperature range of -40°C to 85°C and is designed for audio applications. The product status is obsolete, necessitating the identification of equivalent and substitute alternatives for ongoing design requirements and board-level replacements.

Key Parameters

Parameter	RFS-25V101MH4#5
Manufacturer	Elna America
Capacitance	100 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	270 mA
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated, Max)	0.630" (16.00 mm)
Package Type	Radial, Can
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution relationships for the RFS-25V101MH4#5 are determined by three primary categories of parameters: electrical compatibility, physical compatibility, and lifecycle considerations.

Electrical Compatibility Parameters: Capacitance (100 µF), voltage rating (25 V or higher), tolerance (±20%), and polarization (Polar) must remain consistent or upgrade to higher ratings. Operating temperature range and lifetime at temperature determine functional suitability for the intended application environment.

Physical Compatibility Parameters: Lead spacing (0.197"), case diameter (0.394"), and height (0.630") must match to ensure mechanical fit in existing through-hole PCB designs. Package type (Radial, Can) and mounting type (Through Hole) are fixed requirements.

Lifecycle Parameters: Product status (Active or Not For New Designs preferred over Obsolete) and RoHS compliance (ROHS3 Compliant preferred) affect long-term availability and regulatory suitability.

The substitute parts are categorized as follows:

Direct Similar Substitute: ROB-25V101MG3# (Elna America, same specifications, larger inventory)
Upgrade Options with Enhanced Performance: 510DX107M025CC2D, 511D107M025CC3D, 678D107M025CC3D, 678D107M025CC5D (Active status, improved lifetime or temperature ratings)
Higher Voltage Upgrade Options: 510DX107M035CC2D, 510DX107M035CC4D (35 V rating, better voltage margin)
Higher Voltage, Extended Lifetime: UPJ1H101MPD6 (50 V, 5000 Hrs @ 105°C, enhanced reliability)
Similar Specifications, Smaller Package: UFW1E101MED, UKW1E101MED (Nichicon, same electrical parameters, reduced physical dimensions)

Parameter Comparison

Parameter	RFS-25V101MH4#5	ROB-25V101MG3#	510DX107M025CC2D	511D107M025CC3D	678D107M025CC5D	UPJ1H101MPD6	UFW1E101MED	UKW1E101MED
Manufacturer	Elna America	Elna America	Vishay Sprague	Vishay Sprague	Vishay Sprague	Nichicon	Nichicon	Nichicon
Capacitance	100 µF	100 µF	100 µF	100 µF	100 µF	100 µF	100 µF	100 µF
Voltage Rating	25 V	25 V	25 V	25 V	25 V	50 V	25 V	25 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C	1000 Hrs @ 85°C	2000 Hrs @ 125°C	1000 Hrs @ 105°C	3000 Hrs @ 105°C	5000 Hrs @ 105°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	270 mA	165 mA	268 mA	Not Specified	224 mA	385 mA	185 mA	185 mA
Lead Spacing	0.197" (5.00 mm)	0.138" (3.50 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.098" (2.50 mm)	0.098" (2.50 mm)
Case Diameter	0.394" (10.00 mm)	0.315" (8.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.248" (6.30 mm)	0.248" (6.30 mm)
Height (Seated, Max)	0.630" (16.00 mm)	0.453" (11.50 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.650" (16.50 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
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Non-Compliant	RoHS Non-Compliant	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Obsolete	Active	Active	Active	Not For New Designs	Obsolete	Obsolete

Engineering Selection Recommendations

For Mechanical Fit Compatibility (Same Lead Spacing and Footprint): Select from 510DX107M025CC2D, 511D107M025CC3D, 678D107M025CC3D, 678D107M025CC5D, or UPJ1H101MPD6. These parts maintain the 0.197" (5.00 mm) lead spacing and 0.394" (10.00 mm) case diameter required for direct PCB placement.

For RoHS3 Compliance Requirement: Select 510DX107M025CC2D for 25 V applications with extended temperature capability, or UPJ1H101MPD6 for 50 V ratings with superior lifetime specifications. Both maintain the original physical dimensions. Note that Vishay Sprague 510DX and 678D series parts are RoHS Non-Compliant; confirm regulatory acceptance before selection.

For Enhanced Reliability and Extended Lifetime: UPJ1H101MPD6 (Nichicon, 5000 Hrs @ 105°C) provides the longest operational life and widest operating temperature range (-55°C ~ 105°C), with Active product status ensuring long-term availability.

For Direct Electrical and Physical Equivalence: ROB-25V101MG3# (Elna America) provides identical electrical specifications with RoHS3 compliance, though lead spacing is 0.138" (3.50 mm), requiring PCB layout adjustment.

For Space-Constrained Applications: UFW1E101MED or UKW1E101MED reduce physical footprint (0.248" diameter, 0.433" height) with acceptable ripple current specifications (185 mA @ 120 Hz), suitable for compact designs where lead spacing of 0.098" (2.50 mm) is compatible.

Frequently Asked Questions (FAQ)

Q: Can I use ROB-25V101MG3# as a direct replacement for RFS-25V101MH4#5? A: Electrical and functional compatibility is present (100 µF, 25 V, ±20% tolerance, RoHS3 compliant). However, the lead spacing differs: ROB has 0.138" (3.50 mm) versus RFS at 0.197" (5.00 mm). PCB layout modification is required unless existing pad spacing accommodates the smaller lead distance.

Q: Which substitute offers the longest operational life? A: UPJ1H101MPD6 (Nichicon) provides 5000 hours at 105°C, compared to the original RFS specification of 1000 hours at 85°C. This represents a five-fold improvement in rated lifetime with extended temperature capability.

Q: Are Vishay Sprague 510DX and 678D series parts suitable for new designs? A: These parts have Active product status and provide enhanced electrical performance (improved ESR and impedance specifications). However, they are RoHS Non-Compliant. Verify regulatory and customer requirements before selection for new designs.

Q: What is the primary limitation of UFW1E101MED and UKW1E101MED as substitutes? A: These Nichicon parts reduce physical dimensions (0.248" diameter, 0.433" height) and use shorter lead spacing (0.098"), requiring PCB footprint redesign. They are suitable only when circuit board space constraints permit modification and the reduced ripple current rating (185 mA @ 120 Hz versus 270 mA) meets application requirements.

Q: Can I upgrade the voltage rating to 35 V or 50 V? A: Yes. 510DX107M035CC2D and 510DX107M035CC4D provide 35 V ratings with improved operating temperature (-40°C ~ 125°C) and extended lifetime. UPJ1H101MPD6 offers 50 V rating with superior reliability metrics (5000 Hrs @ 105°C). Higher voltage ratings maintain mechanical compatibility and improve circuit margin, with no electrical penalty in 25 V applications.

Q: What is the difference between 678D107M025CC3D and 678D107M025CC5D? A: Both are Vishay Sprague 678D series parts with identical electrical specifications (100 µF, 25 V, 3000 Hrs @ 105°C) and physical dimensions. The designation suffix ("3D" vs. "5D") indicates packaging configuration or tape reel specifications. Electrical and mechanical performance are equivalent; selection depends on procurement packaging requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message