PK2W331MND3040ER Equivalent & Substitute Parts

Part Overview

The PK2W331MND3040ER is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Chinsan (Elite) in the PK series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The part is currently active in production with 852 pieces in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to component availability, supply chain considerations, or design flexibility within specified tolerances.

Substiute Parts

PK2W331MND3040ER

Chinsan (Elite)In Stock: 907PK2W331MND3040ER Datasheet

Current PartRFQ

450MXG330MEFCSN30X40

RubyconIn Stock: 20294450MXG330MEFCSN30X40 Datasheet

Parametric EquivalentRFQ

LGN2W331MELB40

NichiconIn Stock: 1000140LGN2W331MELB40 Datasheet

Parametric EquivalentRFQ

LQS2W331MELB40

NichiconIn Stock: 1000155LQS2W331MELB40 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PK2W331MND3040ER are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Capacitance: 330 µF
• Voltage Rating: 450 V
• Tolerance: ±20%
• Lifetime: 3000 Hrs @ 105°C
• Operating Temperature Range: -25°C ~ 105°C
• Polarization: Polar

Mechanical Parameters (Must Match):

• Package Type: Radial, Can - Snap-In
• Lead Spacing: 0.394" (10.00mm)
• Diameter: 1.181" (30.00mm)
• Height (Seated Max): 1.654" (42.00mm)
• Mounting Type: Through Hole

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant

All substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the main part number in applications designed for the PK2W331MND3040ER.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed—450MXG330MEFCSN30X40 (Rubycon), LGN2W331MELB40 (Nichicon), and LQS2W331MELB40 (Nichicon)—are qualified equivalents to the PK2W331MND3040ER based on matching electrical specifications, mechanical dimensions, and compliance certifications.

Product Status: All parts are active in production.

Compliance: All substitute parts are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the main part.

Availability: Substitute parts demonstrate significantly higher inventory levels. The Nichicon LGN2W331MELB40 and LQS2W331MELB40 each have 1,000,100 pieces in stock, while the Rubycon 450MXG330MEFCSN30X40 has 20,200 pieces available, compared to 852 pieces of the main part.

Electrical Performance: All parts meet the specified 330 µF capacitance, 450 V voltage rating, ±20% tolerance, and 3000-hour lifetime at 105°C. Ripple current ratings vary slightly across manufacturers but remain within acceptable ranges for general-purpose applications.

Selection among these equivalents should be based on procurement requirements, lead time considerations, and inventory availability rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 450MXG330MEFCSN30X40 (Rubycon) be used as a direct replacement for the PK2W331MND3040ER (Chinsan)?

A: Yes. Both parts share identical electrical ratings (330 µF, 450 V, ±20% tolerance, 3000 Hrs @ 105°C), mechanical dimensions (30mm diameter, 42mm height, 10mm lead spacing), and package configuration (radial, can-style snap-in, through-hole mounting). Both are ROHS3 compliant.

Q: What is the difference between the Nichicon LGN2W331MELB40 and LQS2W331MELB40?

A: Both Nichicon parts are electrically and mechanically identical to the main part and to each other. They differ only in series designation (LGN versus LQS). Both meet all specified parameters and are interchangeable in the same application.

Q: Are there any ripple current differences I should consider when substituting?

A: Ripple current ratings vary slightly among manufacturers. The main part (PK2W331MND3040ER) is rated at 1.6 A @ 120 Hz. The Rubycon substitute is rated at 1.75 A @ 120 Hz, while both Nichicon substitutes are rated at 1.38 A @ 120 Hz. All values remain within acceptable operating ranges for general-purpose applications. Application-specific ripple current requirements should be verified against the circuit design.

Q: Is the ESR (Equivalent Series Resistance) specification important for substitution?

A: The main part specifies 250 mOhm ESR @ 120 Hz. The substitute parts do not provide ESR specifications in the available data. For applications where ESR is a critical design parameter, the main part PK2W331MND3040ER should be used. For general-purpose applications, the absence of specified ESR in substitute parts does not prevent substitution.

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

A: These are general-purpose aluminum electrolytic capacitors rated for ripple current at both low frequency (120 Hz) and high frequency (10 kHz to 50 kHz). The high-frequency ripple current ratings vary by manufacturer. Verify that the selected part's high-frequency ripple current rating meets your specific circuit requirements.

Q: Are all substitute parts REACH compliant?

A: The Rubycon 450MXG330MEFCSN30X40 and both Nichicon parts (LGN2W331MELB40 and LQS2W331MELB40) are listed as REACH Unaffected. The main part PK2W331MND3040ER does not specify REACH status in the provided data.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: The main part PK2W331MND3040ER has MSL 1 (Unlimited). The Nichicon substitutes (LGN2W331MELB40 and LQS2W331MELB40) are listed as Not Applicable for MSL. The Rubycon substitute (450MXG330MEFCSN30X40) has MSL 1 (Unlimited). All parts are suitable for standard handling and storage conditions.