EET-HC2W391DF Equivalent & Substitute Parts

Part Overview

The EET-HC2W391DF is a 390 µF, 450 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-HC series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The part is classified as obsolete, making equivalent substitutes necessary for ongoing system support and new production builds. Direct replacements must maintain identical electrical ratings, mechanical dimensions, and mounting compatibility to ensure seamless integration into existing designs.

Key Parameters

Parameter	Value
Capacitance	390 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)
Height (Seated Max)	1.850" (47.00 mm)
Polarization	Polar
Operating Temperature Range	-25°C to 105°C
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict compliance with the following parameters:

Critical Electrical Parameters:

Capacitance: 390 µF (exact match required)
Voltage Rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)

Critical Mechanical Parameters:

Package Type: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Diameter: 1.181" (30.00 mm) (exact match required)
Height (Seated Max): 1.850" (47.00 mm) or 1.858" (47.20 mm) (within tolerance)

Acceptable Variations:

ESR (Equivalent Series Resistance): Lower values are acceptable and indicate improved performance
Lifetime @ Temperature: Higher values are acceptable and indicate extended operational life
Operating Temperature Range: Extended lower temperature limits are acceptable
Ripple Current: Higher values are acceptable and indicate improved current handling capability
RoHS Status: ROHS3 Compliant status is acceptable for new production

All EPCOS B43508 series variants meet these criteria as direct equivalents. The Rubycon 450MXG390MEFCSN30X45 qualifies as an upgrade substitute with superior performance characteristics while maintaining full mechanical and electrical compatibility.

Parameter Comparison

Parameter	EET-HC2W391DF (Original)	B43508A5397M000	B43508A5397M2	B43508A5397M60	B43508A5397M62	B43508A5397M67	B43508A5397M7	B43508A5397M80	B43508A5397M82	B43508A5397M87	450MXG390MEFCSN30X45
Manufacturer	Panasonic	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	EPCOS - TDK	Rubycon
Capacitance	390 µF	390 µF	390 µF	390 µF	390 µF	390 µF	390 µF	390 µF	390 µF	390 µF	390 µF
Voltage Rating	450 V	450 V	450 V	450 V	450 V	450 V	450 V	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%	±20%
ESR @ Rated Frequency	425 mOhm @ 120 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	320 mOhm @ 100 Hz	Not specified
Lifetime @ 105°C	2000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-25°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-25°C to 105°C
Ripple Current @ 120 Hz	1.39 A	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.74 A @ 100 Hz	1.93 A @ 120 Hz
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)
Height (Seated Max)	1.850" (47.00 mm)	1.850" (47.00 mm)	1.850" (47.00 mm)	1.850" (47.00 mm)	1.850" (47.00 mm)	1.850" (47.00 mm)	1.850" (47.00 mm)	1.858" (47.20 mm)	1.858" (47.20 mm)	1.858" (47.20 mm)	1.850" (47.00 mm)
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Polarization	Polar	Polar	Polar	Polar	Polar	Polar	Polar	Polar	Polar	Polar	Polar
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

EPCOS B43508 Series (Direct Equivalents): The B43508A5397M000, B43508A5397M2, B43508A5397M60, B43508A5397M62, B43508A5397M67, B43508A5397M7, B43508A5397M80, B43508A5397M82, and B43508A5397M87 are functionally equivalent substitutes for the EET-HC2W391DF. All variants maintain identical electrical and mechanical specifications with the exception of minor height variations (1.850" or 1.858"). These parts are manufactured by EPCOS - TDK Electronics and carry Active product status with ROHS3 compliance. The B43508 series demonstrates improved performance characteristics, including lower ESR (320 mOhm @ 100 Hz versus 425 mOhm @ 120 Hz) and extended lifetime rating (3000 Hrs @ 105°C versus 2000 Hrs @ 105°C). Extended operating temperature range (-40°C to 105°C) provides additional design margin. High inventory availability across all variants ensures supply continuity.

Rubycon 450MXG390MEFCSN30X45 (Upgrade Substitute): The Rubycon MXG series part 450MXG390MEFCSN30X45 qualifies as an upgrade substitute with superior performance. This part maintains full mechanical and electrical compatibility while offering increased ripple current capability (1.93 A @ 120 Hz and 2.702 A @ 10 kHz). The MXG series is Active status with ROHS3 compliance and 3000 Hrs @ 105°C lifetime rating. Extensive inventory availability (656,850 pcs) supports high-volume production requirements.

Selection Criteria: For direct replacement in existing designs, any B43508 variant provides equivalent performance. For new designs or applications requiring enhanced ripple current handling, the Rubycon MXG series offers measurable performance advantages. All substitutes are suitable for general-purpose applications and maintain compatibility with original PCB layouts and mechanical assemblies.

Frequently Asked Questions (FAQ)

Q: Can the B43508 series parts be used as direct replacements for the EET-HC2W391DF? A: Yes. The B43508 series maintains identical capacitance (390 µF), voltage rating (450 V), tolerance (±20%), package type (Radial, Can - Snap-In), and mechanical dimensions. All variants are mechanically and electrically interchangeable with the original part.

Q: What is the difference between the various B43508 part numbers? A: The B43508A5397M variants differ only in packaging configuration and minor height tolerances (1.850" or 1.858"). All electrical specifications remain identical. Selection among variants depends on packaging requirements and inventory availability.

Q: Does the Rubycon 450MXG390MEFCSN30X45 fit the same PCB footprint? A: Yes. The Rubycon part maintains identical lead spacing (0.394" / 10.00 mm), diameter (1.181" / 30.00 mm), and seated height (1.850" / 47.00 mm). It is mechanically compatible with existing through-hole PCB designs.

Q: What are the performance advantages of the B43508 series over the original EET-HC2W391DF? A: The B43508 series offers lower ESR (320 mOhm @ 100 Hz versus 425 mOhm @ 120 Hz), extended lifetime (3000 Hrs @ 105°C versus 2000 Hrs @ 105°C), and expanded operating temperature range (-40°C to 105°C versus -25°C to 105°C). These improvements reduce heat generation and extend service life.

Q: What are the performance advantages of the Rubycon MXG series? A: The Rubycon 450MXG390MEFCSN30X45 provides increased ripple current capacity (1.93 A @ 120 Hz and 2.702 A @ 10 kHz) compared to the original part (1.39 A @ 120 Hz). This enhanced capability is beneficial for high-current filtering applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All EPCOS B43508 variants and the Rubycon MXG series carry ROHS3 Compliant certification, meeting current environmental and regulatory requirements for new production.

Q: What is the inventory status of these substitute parts? A: All substitute parts maintain substantial inventory levels. EPCOS B43508 variants range from 860 to 274,082 pcs in stock. The Rubycon 450MXG390MEFCSN30X45 has 656,850 pcs available, ensuring supply continuity for both prototype and production volumes.

Q: Can these parts be used in applications requiring extended temperature operation? A: The B43508 series supports operation from -40°C to 105°C, providing extended low-temperature capability compared to the original part (-25°C to 105°C). The Rubycon MXG series maintains the original temperature range (-25°C to 105°C). Selection depends on specific application temperature requirements.

Q: Is there any difference in moisture sensitivity between the original and substitute parts? A: No. All parts, including the original EET-HC2W391DF and all substitutes, carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions.

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