Equivalent & Substitute Parts for EET-HC2W331KA

Part Overview

The Panasonic EET-HC2W331KA is a 330 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package format. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The TS-HC series has been discontinued, requiring engineers to identify functionally compatible alternatives from active product lines that maintain electrical and mechanical compatibility.

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)
Mounting Type	Through Hole
Operating Temperature Range	-25°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance: Must be 330 µF (no tolerance variation)
Voltage Rating: Must be 450 V (no reduction permitted)
Tolerance: Must be ±20%
Package Type: Must be Radial, Can - Snap-In
Lead Spacing: Must be 0.394" (10.00 mm)
Diameter: Must be 1.181" (30.00 mm)
Mounting Type: Must be Through Hole
Operating Temperature: Must support -25°C to 105°C range
Polarization: Must be Polar

All substitute parts listed meet these core electrical and mechanical requirements. Variations in height, ESR, ripple current ratings, and lifetime specifications do not disqualify parts from substitution eligibility, as these represent performance enhancements or different design approaches within the same functional category.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Height (Max)	Lifetime @ 105°C	Status
EET-HC2W331KA	Panasonic	330 µF	450 V	±20%	1.850" (47.00 mm)	2000 Hrs	Obsolete
381LQ331M450K452	Cornell Dubilier Electronics	330 µF	450 V	±20%	1.850" (47.00 mm)	2000 Hrs	Active
450HXG330MEFC30X45	Rubycon	330 µF	450 V	±20%	1.850" (47.00 mm)	3000 Hrs	Active
450MXG330MEFCSN30X40	Rubycon	330 µF	450 V	±20%	1.654" (42.00 mm)	3000 Hrs	Active
450MXH330MEFC30X35	Rubycon	330 µF	450 V	±20%	1.457" (37.00 mm)	2000 Hrs	Active
450MXH330MEFCSN30X35	Rubycon	330 µF	450 V	±20%	1.457" (37.00 mm)	2000 Hrs	Active
450MXK330MEFC30X30	Rubycon	330 µF	450 V	±20%	1.260" (32.00 mm)	3000 Hrs	Active
450MXK330MEFCFA30X30	Rubycon	330 µF	450 V	±20%	1.260" (32.00 mm)	3000 Hrs	Active
450VXG330MEFCSN30X45	Rubycon	330 µF	450 V	±20%	1.850" (47.00 mm)	5000 Hrs	Active
450VXH330MEFC30X40	Rubycon	330 µF	450 V	±20%	1.654" (42.00 mm)	5000 Hrs	Active
450VXH330MEFCSN30X40	Rubycon	330 µF	450 V	±20%	1.654" (42.00 mm)	5000 Hrs	Active

Engineering Selection Recommendations

All listed substitute parts are active products from established manufacturers (Cornell Dubilier Electronics and Rubycon), ensuring long-term availability and supply chain stability. The original Panasonic EET-HC2W331KA is obsolete, making substitution mandatory for new designs and ongoing production.

Direct Electrical Equivalents (Matching 2000 Hr Lifetime):

381LQ331M450K452 (Cornell Dubilier) provides identical electrical specifications and height profile
450MXH330MEFC30X35 and 450MXH330MEFCSN30X35 (Rubycon) offer reduced height with equivalent lifetime

Enhanced Performance Options (3000 Hr Lifetime):

450HXG330MEFC30X45 (Rubycon) maintains original height with extended lifetime
450MXK330MEFC30X30 and 450MXK330MEFCFA30X30 (Rubycon) provide compact form factor with extended lifetime

Premium Options (5000 Hr Lifetime):

450VXG330MEFCSN30X45 (Rubycon) maintains original height with maximum lifetime rating
450VXH330MEFC30X40 and 450VXH330MEFCSN30X40 (Rubycon) offer intermediate height with maximum lifetime

All substitute parts are RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements. Selection should prioritize available inventory and PCB layout constraints based on height specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height? A: Yes. All listed substitutes maintain the required 0.394" (10.00 mm) lead spacing and 1.181" (30.00 mm) diameter. Height variations (ranging from 1.260" to 1.850") do not affect electrical function or snap-in mounting compatibility. PCB layout must accommodate the selected height.

Q: What is the difference between parts with similar specifications but different heights? A: Height differences reflect internal design variations and manufacturing approaches. Shorter parts (32 mm, 37 mm, 42 mm) use more efficient internal construction, while taller parts (47 mm) may offer different ripple current handling or thermal characteristics. All meet the core 330 µF, 450 V, ±20% specification.

Q: Are all substitutes pin-compatible with the original EET-HC2W331KA? A: Yes. All substitutes use identical 0.394" (10.00 mm) lead spacing and radial, can snap-in package format, ensuring direct PCB compatibility.

Q: What does "Active" product status mean? A: Active status indicates the part is currently manufactured and available from the supplier. The original EET-HC2W331KA is obsolete, meaning Panasonic no longer manufactures it.

Q: Should I select a part with longer lifetime (5000 Hrs vs. 2000 Hrs)? A: Lifetime selection depends on application requirements. Extended lifetime parts offer improved reliability for critical applications but may have different availability or cost. All listed parts meet the original -25°C to 105°C operating temperature range.

Q: What is the significance of ESR (Equivalent Series Resistance)? A: ESR affects ripple current handling and thermal performance. The original part specifies 553 mOhm @ 120 Hz. Substitute parts with unspecified ESR use alternative internal designs that meet the same functional requirements through different ripple current ratings.

Q: Are there compliance differences between manufacturers? A: All listed substitutes are RoHS3 compliant and REACH unaffected. The original EET-HC2W331KA is REACH affected. Modern substitutes meet current environmental and regulatory standards.

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