477ULR6R3MFF Equivalent & Substitute Parts

Part Overview

The 477ULR6R3MFF is a 470 µF, 6.3 V aluminum polymer capacitor manufactured by Cornell Dubilier / Illinois Capacitor. 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 2000 hours at 105°C. The part maintains an active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or application-specific needs.

Key Parameters

Parameter	Specification
Capacitance	470 µF
Voltage Rating	6.3 V
Tolerance	±20%
Type	Aluminum Polymer
ESR (Equivalent Series Resistance)	8 mOhm
Lifetime @ Temperature	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.138" (3.50 mm)
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.354" (9.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 477ULR6R3MFF are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters:

Capacitance: 470 µF (exact match required)
Voltage Rating: 6.3 V (exact match required)
Tolerance: ±20% (exact match required)
ESR: 8 mOhm (exact match required)
Lifetime: 2000 Hrs @ 105°C (exact match required)
Operating Temperature Range: -55°C to 105°C (exact match required)

Mechanical Parameters:

Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Lead Spacing: 0.138" (3.50 mm) (exact match required)
Size / Dimension: 0.315" Dia (8.00 mm) (exact match required)
Height - Seated (Max): 0.354" (9.00 mm) (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (exact match required)
REACH Status: REACH Unaffected (exact match required)

Parameter Comparison

Parameter	477ULR6R3MFF (Cornell Dubilier / Illinois Capacitor)	RL80J471MDN1 (Nichicon)
Capacitance	470 µF	470 µF
Voltage Rating	6.3 V	6.3 V
Tolerance	±20%	±20%
Type	Aluminum Polymer	Aluminum Polymer
ESR	8 mOhm	8 mOhm
Lifetime @ Temperature	2000 Hrs @ 105°C	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 120 Hz	285 mA	570 mA
Ripple Current @ 100 kHz	5.7 A	5.7 A
Lead Spacing	0.138" (3.50 mm)	0.138" (3.50 mm)
Size / Dimension	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)
Mounting Type	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

The RL80J471MDN1 manufactured by Nichicon is a direct parametric equivalent to the 477ULR6R3MFF. Both parts meet identical electrical specifications (470 µF, 6.3 V, ±20% tolerance, 8 mOhm ESR, 2000 Hrs @ 105°C) and mechanical requirements (through-hole radial can package, 0.138" lead spacing, 0.315" diameter, 0.354" maximum height). Both parts maintain active product status and comply with ROHS3 and REACH requirements.

Selection between these parts is based on availability and supply chain considerations. The RL80J471MDN1 currently has higher inventory availability (1523 pcs) compared to the 477ULR6R3MFF (816 pcs). Both parts are suitable for direct substitution in decoupling applications where the specified electrical and mechanical parameters are required.

Frequently Asked Questions (FAQ)

Q: Can the RL80J471MDN1 be used as a direct replacement for the 477ULR6R3MFF?

A: Yes. Both parts share identical capacitance (470 µF), voltage rating (6.3 V), tolerance (±20%), ESR (8 mOhm), lifetime rating (2000 Hrs @ 105°C), operating temperature range (-55°C to 105°C), and mechanical dimensions. Through-hole radial can packages with 0.138" lead spacing are mechanically interchangeable on standard PCB layouts.

Q: Are there differences in ripple current specifications?

A: The RL80J471MDN1 specifies 570 mA ripple current at 120 Hz, while the 477ULR6R3MFF specifies 285 mA at 120 Hz. Both parts specify identical ripple current at 100 kHz (5.7 A). The higher low-frequency ripple current rating of the RL80J471MDN1 does not affect substitution compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 477ULR6R3MFF and RL80J471MDN1 are ROHS3 compliant and REACH unaffected. Both parts carry EAR99 ECCN classification and 8532.22.0020 HTSUS code.

Q: What is the difference between the ULR and RL8 series designations?

A: The 477ULR6R3MFF belongs to the ULR series (Cornell Dubilier / Illinois Capacitor), while the RL80J471MDN1 belongs to the RL8 series (Nichicon). Series designations identify manufacturer-specific product lines. Both series contain aluminum polymer capacitors with equivalent electrical and mechanical specifications for this particular part number.

Q: Are there any application-specific considerations for substitution?

A: Both parts are rated for decoupling and general-purpose applications. The identical ESR (8 mOhm) and lifetime rating (2000 Hrs @ 105°C) ensure equivalent performance in power supply filtering, signal coupling, and noise suppression circuits. No application-specific limitations apply to substitution.

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