477SAK050M Equivalent & Substitute Parts

Part Overview

The 477SAK050M is a 470 µF, 50 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the SAK series. This radial, through-hole component is designed for general-purpose applications with a rated lifetime of 2000 hours at 85°C. The part is currently active in production and RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when design specifications permit higher voltage ratings.

Key Parameters

Parameter	Value
Capacitance	470 µF
Voltage - Rated	50 V
Tolerance	±20%
ESR @ 120Hz	423 mOhm
Lifetime @ Temp.	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 120 Hz	730 mA
Ripple Current @ 10 kHz	1.095 A
Lead Spacing	0.295" (7.50 mm)
Diameter	0.630" (16.00 mm)
Height - Seated (Max)	0.650" (16.50 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	RoHS3 Compliant
Polarization	Polar

Substitute Part Grouping Explanation

Substitution of the 477SAK050M is determined by the following critical parameters:

Capacitance: All substitute parts maintain 470 µF to ensure functional equivalence in the circuit.

Tolerance: All substitute parts maintain ±20% tolerance to preserve circuit performance specifications.

Voltage Rating: The 477SAK050M operates at 50 V rated voltage. Substitute parts are grouped into two categories:

Parametric Equivalents: Parts rated at 50 V (URS1H471MHD, URS1H471MHD1CV) provide direct electrical equivalence with identical voltage specifications.
Upgrade Substitute: The URS1J471MHD is rated at 63 V, providing higher voltage margin while maintaining all other electrical and mechanical parameters.

Physical Dimensions: All substitute parts share identical lead spacing (0.295" / 7.50 mm), diameter (0.630" / 16.00 mm), and height (0.650" / 16.50 mm), ensuring direct mechanical compatibility in through-hole PCB applications.

Mounting Type: All substitute parts are through-hole radial components, maintaining identical mounting methodology.

Operating Temperature Range: All substitute parts operate across -40°C to 85°C, matching the thermal envelope of the main part.

Lifetime Rating: All substitute parts are rated for 2000 hours at 85°C, maintaining equivalent reliability specifications.

Compliance: All substitute parts are RoHS3 compliant and REACH unaffected, matching the regulatory status of the main part.

Parameter Comparison

Parameter	477SAK050M (Cornell Dubilier)	URS1H471MHD (Nichicon)	URS1H471MHD1CV (Nichicon)	URS1J471MHD (Nichicon)
Manufacturer	Cornell Dubilier / Illinois Capacitor	Nichicon	Nichicon	Nichicon
Series	SAK	URS	URS	URS
Capacitance	470 µF	470 µF	470 µF	470 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage - Rated	50 V	50 V	50 V	63 V
Lifetime @ Temp.	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	730 mA	750 mA	750 mA	900 mA
Ripple Current @ 10 kHz	1.095 A	1.125 A	1.125 A	1.35 A
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Diameter	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Height - Seated (Max)	0.650" (16.50 mm)	0.650" (16.50 mm)	0.650" (16.50 mm)	0.650" (16.50 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Polarization	Polar	Polar	Polar	Polar
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent Selection (URS1H471MHD, URS1H471MHD1CV):

The URS1H471MHD and URS1H471MHD1CV are direct parametric equivalents to the 477SAK050M. Both parts are manufactured by Nichicon, maintain identical electrical specifications (470 µF, 50 V, ±20% tolerance), and share the same physical dimensions and mounting configuration. These parts are suitable for direct replacement in applications where the 477SAK050M is specified. Both are RoHS3 compliant and rated for 2000 hours at 85°C. The URS1H471MHD1CV includes a specific variant designation but maintains identical electrical and mechanical characteristics to the URS1H471MHD.

Upgrade Substitute Selection (URS1J471MHD):

The URS1J471MHD is a voltage-upgraded substitute rated at 63 V instead of 50 V. This part is suitable for applications where the circuit design permits higher voltage margin or where 50 V rated components are unavailable. The URS1J471MHD maintains identical capacitance (470 µF), tolerance (±20%), physical dimensions, and mounting type. The higher voltage rating provides additional safety margin in circuits operating below 50 V. This part is RoHS3 compliant and rated for 2000 hours at 85°C. Ripple current ratings are higher at both 120 Hz (900 mA) and 10 kHz (1.35 A), indicating improved performance characteristics.

Compliance and Regulatory Status:

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring compatibility with current regulatory requirements. All parts are classified under HTSUS 8532.22.0020 and carry EAR99 ECCN designation.

Frequently Asked Questions (FAQ)

Q: Can the URS1H471MHD be used as a direct replacement for the 477SAK050M?

A: Yes. The URS1H471MHD is a parametric equivalent with identical capacitance (470 µF), voltage rating (50 V), tolerance (±20%), physical dimensions, and mounting type. Both parts are through-hole radial components with matching lead spacing, diameter, and height specifications.

Q: What is the difference between the URS1H471MHD and URS1H471MHD1CV?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The URS1H471MHD1CV includes a variant designation but maintains the same 470 µF capacitance, 50 V voltage rating, and physical dimensions as the URS1H471MHD.

Q: Can the URS1J471MHD (63 V) be used in place of the 477SAK050M (50 V)?

A: Yes, the URS1J471MHD can be used in circuits designed for 50 V operation. The higher 63 V rating provides additional voltage margin. The part maintains identical capacitance (470 µF), tolerance (±20%), and physical dimensions. This substitution is suitable when the circuit design permits higher voltage rated components or when 50 V rated parts are unavailable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The URS1H471MHD, URS1H471MHD1CV, and URS1J471MHD are all RoHS3 compliant, matching the regulatory status of the 477SAK050M.

Q: Do the substitute parts have the same physical footprint as the 477SAK050M?

A: Yes. All substitute parts share identical lead spacing (0.295" / 7.50 mm), diameter (0.630" / 16.00 mm), and height (0.650" / 16.50 mm), ensuring direct mechanical compatibility in through-hole PCB applications without layout modifications.

Q: What is the lifetime rating of the substitute parts?

A: All substitute parts are rated for 2000 hours at 85°C, matching the lifetime specification of the 477SAK050M.

Q: Can these parts be used in high-ripple-current applications?

A: The substitute parts support ripple current operation. The URS1J471MHD provides higher ripple current ratings (900 mA @ 120 Hz, 1.35 A @ 10 kHz) compared to the 477SAK050M (730 mA @ 120 Hz, 1.095 A @ 10 kHz). The URS1H471MHD and URS1H471MHD1CV support 750 mA @ 120 Hz and 1.125 A @ 10 kHz. Application-specific ripple current requirements should be verified against the selected part's ratings.

Q: What is the operating temperature range for these parts?

A: All parts operate across -40°C to 85°C, providing identical thermal operating envelope.

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