EET-HC2W331DF Equivalent & Substitute Parts

Part Overview

The EET-HC2W331DF is a 330 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 2000 hours at 105°C, suitable for general-purpose applications requiring high-voltage energy storage and filtering.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)
Height (Seated Max)	1.654" (42.00 mm)
Mounting Type	Through Hole
Operating Temperature	-25°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the EET-HC2W331DF is determined by strict equivalence across the following parameters: capacitance value (330 µF), voltage rating (450 V), tolerance (±20%), package configuration (radial, can snap-in), lead spacing (10.00 mm), physical dimensions (30.00 mm diameter, 42.00 mm height), and through-hole mounting compatibility. All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct form-fit-function replacement without circuit redesign or PCB modification.

The substitute parts are grouped into two categories based on manufacturer and performance characteristics:

EPCOS - TDK Electronics B43508 Series: Multiple part number variants (B43508B5337M000, B43508B5337M002, B43508B5337M062, B43508B5337M60, B43508B5337M67, B43508B5337M80, B43508B5337M82, B43508B5337M87) with identical electrical specifications and active product status.

EPCOS - TDK Electronics B43644 Series: B43644A5337M000 offering enhanced performance characteristics.

Rubycon MXG Series: 450MXG330MEFCSN30X40 providing alternative sourcing with active product status.

Parameter Comparison

Parameter	EET-HC2W331DF (Panasonic)	450MXG330MEFCSN30X40 (Rubycon)	B43508B5337M000 (EPCOS)	B43644A5337M000 (EPCOS)
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%
Lead Spacing	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Diameter	30.00 mm	30.00 mm	30.00 mm	30.00 mm
Height (Seated Max)	42.00 mm	42.00 mm	42.00 mm	42.00 mm
Package Type	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
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-40°C to 105°C	-40°C to 105°C
Lifetime @ 105°C	2000 Hrs	3000 Hrs	3000 Hrs	5000 Hrs
ESR @ 100-120 Hz	553 mOhm @ 120 Hz	Not specified	370 mOhm @ 100 Hz	90 mOhm @ 100 Hz
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the EET-HC2W331DF. Selection should prioritize active product status and regulatory compliance:

EPCOS - TDK Electronics B43508 Series (B43508B5337M000, B43508B5337M002, B43508B5337M062, B43508B5337M60, B43508B5337M67, B43508B5337M80, B43508B5337M82, B43508B5337M87) are active products with ROHS3 compliance. These parts offer improved ESR performance (370 mOhm @ 100 Hz versus 553 mOhm @ 120 Hz) and extended lifetime (3000 hours at 105°C). Operating temperature range extends to -40°C, providing broader environmental coverage than the original part.

EPCOS - TDK Electronics B43644A5337M000 is an active product with ROHS3 compliance offering the highest performance specification: 90 mOhm ESR @ 100 Hz and 5000-hour lifetime at 105°C. This part is suitable for applications requiring superior ripple current handling and extended service life.

Rubycon 450MXG330MEFCSN30X40 is an active product providing alternative sourcing. This part delivers 3000-hour lifetime at 105°C and 1.75 A ripple current at 120 Hz, meeting the core substitution requirements.

Frequently Asked Questions (FAQ)

Q: Can the EET-HC2W331DF be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts maintain identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), package configuration (radial snap-in), lead spacing (10.00 mm), and physical dimensions (30.00 mm diameter, 42.00 mm height). Direct PCB mounting without modification is possible.

Q: What is the primary difference between the B43508 and B43644 series?

A: Both series are EPCOS - TDK Electronics products with identical electrical ratings. The B43644A5337M000 offers superior ESR performance (90 mOhm @ 100 Hz versus 370 mOhm @ 100 Hz) and extended lifetime (5000 hours versus 3000 hours at 105°C), making it suitable for applications with higher ripple current demands or extended operational requirements.

Q: Are there compliance differences between substitute options?

A: The EPCOS B43508 and B43644 series are ROHS3 compliant. The Rubycon MXG series compliance status is not specified in the provided data. For applications requiring documented RoHS compliance, EPCOS parts are the specified choice.

Q: Does the extended operating temperature range of substitute parts affect compatibility?

A: No. The substitute parts with -40°C to 105°C operating range are backward compatible with the original -25°C to 105°C specification. The extended lower temperature limit provides additional environmental margin without affecting circuit performance.

Q: What inventory considerations apply to these substitutes?

A: EPCOS B43508 variants and B43644A5337M000 maintain substantial inventory levels (9,376 to 274,082 units). Rubycon 450MXG330MEFCSN30X40 has 20,200 units available. All parts are listed as new original stock.

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