RFS-100V470MI6#5 Equivalent & Substitute Parts

Part Overview

The RFS-100V470MI6#5 is a 47 µF, 100 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. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing maintenance, repair, and legacy system support. Substitute parts are selected based on matching or exceeding electrical and mechanical specifications within the allowed parameter range.

Key Parameters

Parameter	Value	Unit
Capacitance	47	µF
Voltage - Rated	100	V
Tolerance	±20%	-
Lifetime @ Temperature	1000 Hrs @ 85°C	-
Operating Temperature Range	-40°C ~ 85°C	-
Polarization	Polar	-
Lead Spacing	0.197" (5.00mm)	-
Size / Dimension	0.492" Dia (12.50mm)	-
Height - Seated (Max)	0.984" (25.00mm)	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the RFS-100V470MI6#5 are classified into two categories based on electrical and mechanical compatibility:

Similar Substitutes (Direct Replacement Category): These parts maintain identical or equivalent electrical specifications and physical dimensions, allowing direct substitution in existing designs:

Capacitance: 47 µF (exact match)
Voltage Rating: 100 V (exact match)
Tolerance: ±20% (exact match)
Lead Spacing: 0.197" (5.00mm) (exact match)
Mounting Type: Through Hole (exact match)
Package: Radial, Can (exact match)

Parts in this category: ROB-100V470MH5#, UFW2A470MPD, UKW2A470MPD

Upgrade Substitutes (Enhanced Performance Category): These parts exceed the original specifications in voltage rating and/or thermal performance while maintaining identical capacitance, tolerance, lead spacing, and mounting configuration:

Capacitance: 47 µF (exact match)
Voltage Rating: 160 V or 200 V (exceeds 100 V requirement)
Tolerance: ±20% (exact match)
Lead Spacing: 0.197" (5.00mm) (exact match)
Mounting Type: Through Hole (exact match)
Package: Radial, Can (exact match)
Lifetime: 7000 Hrs @ 105°C (exceeds 1000 Hrs @ 85°C)

Parts in this category: UPW2C470MHD, UPW2D470MHD

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ Temp	Operating Temp Range	Size Dia (mm)	Height (mm)	Lead Spacing (mm)	Ripple Current @ 120 Hz (mA)	Product Status
RFS-100V470MI6#5	Elna America	RFS, SILMIC II	47	100	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	12.50	25.00	5.00	285	Obsolete
ROB-100V470MH5#	Elna America	ROB, TONEREX	47	100	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	10.00	20.00	5.00	210	Obsolete
UPW2C470MHD	Nichicon	UPW	47	160	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	12.50	25.00	5.00	220	Obsolete
UPW2D470MHD	Nichicon	UPW	47	200	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	12.50	25.00	5.00	220	Obsolete
UFW2A470MPD	Nichicon	UFW	47	100	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	10.00	12.50	5.00	210	Not For New Designs
UKW2A470MPD	Nichicon	UKW	47	100	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	10.00	12.50	5.00	210	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

ROB-100V470MH5# (Elna America) is the primary direct equivalent. It maintains 47 µF capacitance, 100 V rating, ±20% tolerance, and identical lead spacing of 5.00 mm. Physical dimensions are reduced (10.00 mm diameter, 20.00 mm height versus 12.50 mm diameter, 25.00 mm height), which may be advantageous for space-constrained applications. Ripple current rating is lower at 210 mA @ 120 Hz compared to 285 mA. Both parts are classified as obsolete and ROHS3 compliant.

UFW2A470MPD and UKW2A470MPD (Nichicon) are functionally equivalent at 47 µF, 100 V with identical lead spacing. These parts are marked "Not For New Designs" and feature reduced physical dimensions (10.00 mm diameter, 12.50 mm height). Lifetime rating is 2000 Hrs @ 85°C, exceeding the original 1000 Hrs @ 85°C specification. Ripple current is 210 mA @ 120 Hz.

For Enhanced Performance (Upgraded Electrical Specifications):

UPW2C470MHD (Nichicon, 160 V) and UPW2D470MHD (Nichicon, 200 V) provide voltage margin upgrades while maintaining identical physical dimensions to the original part (12.50 mm diameter, 25.00 mm height). Both feature extended lifetime of 7000 Hrs @ 105°C and expanded operating temperature range to 105°C. These upgrades are suitable for applications requiring improved thermal stability and voltage headroom. Both parts are ROHS3 compliant and classified as obsolete.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status. Selection should be based on physical space availability, ripple current requirements, and thermal operating conditions of the target application.

Frequently Asked Questions (FAQ)

Q: Can ROB-100V470MH5# be used as a direct replacement for RFS-100V470MI6#5?

A: Yes. ROB-100V470MH5# is a direct electrical equivalent with identical capacitance (47 µF), voltage rating (100 V), tolerance (±20%), and lead spacing (5.00 mm). Physical dimensions are smaller, which may require PCB layout verification. Ripple current capacity is lower at 210 mA @ 120 Hz versus 285 mA.

Q: What is the difference between similar and upgrade substitutes?

A: Similar substitutes (ROB-100V470MH5#, UFW2A470MPD, UKW2A470MPD) maintain identical electrical specifications at 100 V. Upgrade substitutes (UPW2C470MHD at 160 V, UPW2D470MHD at 200 V) exceed the voltage rating and provide extended thermal lifetime (7000 Hrs @ 105°C versus 1000 Hrs @ 85°C), suitable for applications requiring higher voltage margin or elevated temperature operation.

Q: Are the physical dimensions of all substitutes identical to the original part?

A: No. The original RFS-100V470MI6#5 measures 12.50 mm diameter and 25.00 mm height. ROB-100V470MH5# is smaller at 10.00 mm diameter and 20.00 mm height. UFW2A470MPD and UKW2A470MPD are further reduced to 10.00 mm diameter and 12.50 mm height. UPW2C470MHD and UPW2D470MHD match the original dimensions at 12.50 mm diameter and 25.00 mm height. PCB layout verification is required when substituting parts with different dimensions.

Q: Can UFW2A470MPD or UKW2A470MPD be used in new designs?

A: Both parts are marked "Not For New Designs." They are suitable for repair and maintenance of existing equipment but should not be specified for new product development. UPW2C470MHD or UPW2D470MHD are preferred for new designs due to extended lifetime and higher voltage ratings.

Q: What is the ripple current significance when selecting a substitute?

A: Ripple current rating indicates the maximum AC current the capacitor can handle at specified frequency without exceeding temperature limits. The original part is rated 285 mA @ 120 Hz. Substitutes ROB-100V470MH5#, UFW2A470MPD, and UKW2A470MPD are rated 210 mA @ 120 Hz. If the application requires ripple current exceeding 210 mA, the original part or upgrade substitutes with higher ratings must be used.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original RFS-100V470MI6#5.

Q: Which substitute offers the best thermal performance?

A: UPW2C470MHD and UPW2D470MHD offer the best thermal performance with 7000 Hrs @ 105°C lifetime rating and operating temperature range extended to 105°C, compared to the original 1000 Hrs @ 85°C and -40°C ~ 85°C range.

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