477UER6R3MFF Equivalent & Substitute Parts

Part Overview

The 477UER6R3MFF is a 470 µF aluminum polymer capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated at 6.3 V with an 8 mOhm equivalent series resistance (ESR). This through-hole radial can capacitor is designed for decoupling applications and operates across a temperature range of -55°C to 105°C with a rated lifetime of 5000 hours at 105°C. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified tolerances and ratings.

Key Parameters

Parameter	Value	Unit
Capacitance	470	µF
Tolerance	±20%	-
Voltage - Rated	6.3	V
ESR (Equivalent Series Resistance)	8	mOhm
Lifetime @ Temperature	5000 Hrs @ 105°C	-
Operating Temperature Range	-55°C ~ 105°C	-
Lead Spacing	0.138" (3.50 mm)	-
Size / Dimension	0.315" Dia (8.00 mm)	-
Height - Seated (Max)	0.354" (9.00 mm)	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
Type	Polymer	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 477UER6R3MFF are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Critical Matching Parameters:

Capacitance: 470 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 6.3 V (exact match required)
ESR: 8 mOhm (exact match required)
Lifetime: 5000 Hrs @ 105°C (exact match required)
Operating Temperature: -55°C ~ 105°C (exact match required)
Lead Spacing: 0.138" (3.50 mm) (exact match required)
Physical Dimensions: 0.315" Dia (8.00 mm), Height 0.354" (9.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package: Radial, Can (exact match required)
Type: Polymer (exact match required)
Compliance: ROHS3 Compliant (exact match required)

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the 477UER6R3MFF in applications requiring these specifications.

Parameter Comparison

Parameter	477UER6R3MFF (Cornell Dubilier)	6SEPC470MX (Panasonic)	RL80J471MDNASQ (Nichicon)
Capacitance	470 µF	470 µF	470 µF
Tolerance	±20%	±20%	±20%
Voltage - Rated	6.3 V	6.3 V	6.3 V
ESR (Equivalent Series Resistance)	8 mOhm	8 mOhm	8 mOhm
Lifetime @ Temperature	5000 Hrs @ 105°C	5000 Hrs @ 105°C	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Ripple Current @ 120 Hz	200 mA	285 mA	570 mA
Ripple Current @ 100 kHz	4 A	5.7 A	5.7 A
Lead Spacing	0.138" (3.50 mm)	0.138" (3.50 mm)	0.138" (3.50 mm)
Size / Dimension	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.354" (9.00 mm)	0.354" (9.00 mm)	0.354" (9.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can
Type	Polymer	Polymer	Polymer
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8532.22.0020	8532.22.0020	8532.22.0020

Engineering Selection Recommendations

All three parts—477UER6R3MFF (Cornell Dubilier / Illinois Capacitor), 6SEPC470MX (Panasonic), and RL80J471MDNASQ (Nichicon)—are Active status products with ROHS3 compliance and REACH Unaffected designation. Each part meets the identical electrical specifications of 470 µF capacitance at 6.3 V with 8 mOhm ESR and 5000-hour lifetime at 105°C. All three maintain the same through-hole radial can package with identical lead spacing and physical dimensions, ensuring direct mechanical compatibility in PCB layouts.

Selection between these parts may be based on inventory availability, supply chain considerations, or application-specific ripple current requirements. The 6SEPC470MX and RL80J471MDNASQ both offer higher ripple current ratings at 100 kHz (5.7 A versus 4 A), while the RL80J471MDNASQ provides the highest ripple current capability at low frequency (570 mA @ 120 Hz). All parts are suitable for decoupling and general-purpose applications within the specified electrical and thermal parameters.

Frequently Asked Questions (FAQ)

Q: Can the 6SEPC470MX be used as a direct replacement for the 477UER6R3MFF?

A: Yes. The 6SEPC470MX is a parametric equivalent with identical capacitance (470 µF), voltage rating (6.3 V), ESR (8 mOhm), lifetime (5000 Hrs @ 105°C), operating temperature range (-55°C ~ 105°C), and physical dimensions. Both are through-hole radial can packages with 0.138" lead spacing and ROHS3 compliance.

Q: What is the difference in ripple current ratings between these parts?

A: The 477UER6R3MFF is rated for 200 mA @ 120 Hz and 4 A @ 100 kHz. The 6SEPC470MX provides 285 mA @ 120 Hz and 5.7 A @ 100 kHz. The RL80J471MDNASQ offers 570 mA @ 120 Hz and 5.7 A @ 100 kHz. Higher ripple current ratings indicate greater capability to handle AC current stress in the application.

Q: Are all three parts mechanically identical?

A: Yes. All three parts share identical lead spacing (0.138" / 3.50 mm), diameter (0.315" / 8.00 mm), and maximum seated height (0.354" / 9.00 mm). They are all through-hole radial can packages and are mechanically interchangeable on PCBs designed for this form factor.

Q: Do these parts have the same compliance certifications?

A: Yes. All three parts are ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99 with HTSUS code 8532.22.0020.

Q: Which part should I select if ripple current is a critical design parameter?

A: Selection depends on the specific ripple current requirements of your application. If low-frequency ripple current (120 Hz) is critical, the RL80J471MDNASQ provides the highest rating at 570 mA. If high-frequency ripple current (100 kHz) is the limiting factor, both the 6SEPC470MX and RL80J471MDNASQ provide 5.7 A, compared to 4 A for the 477UER6R3MFF.

Q: Are these parts suitable for decoupling applications?

A: The 477UER6R3MFF is specified for decoupling applications. The 6SEPC470MX and RL80J471MDNASQ are specified for general-purpose applications. All three meet the electrical and thermal specifications required for decoupling in the stated voltage and temperature ranges.

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