SLPX331M315E3P3 Equivalent & Substitute Parts

Part Overview

The SLPX331M315E3P3 is a 330 µF, 315 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active and is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part is ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing.

Equivalent and substitute parts are identified when design requirements permit voltage derating, temperature performance upgrades, or manufacturer sourcing flexibility while maintaining the same capacitance value, tolerance, physical footprint, and mounting configuration.

Substiute Parts

SLPX331M315E3P3

Cornell Dubilier Electronics (CDE)In Stock: 777SLPX331M315E3P3 Datasheet

Current PartRFQ

450MXK330MEFCFA30X30

RubyconIn Stock: 273982450MXK330MEFCFA30X30 Datasheet

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B43642C9337M000

EPCOS - TDK ElectronicsIn Stock: 2499B43642C9337M000 Datasheet

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LGU2F331MELB

NichiconIn Stock: 1037LGU2F331MELB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of aluminum electrolytic capacitors is determined by strict adherence to the following criteria:

Mandatory Matching Parameters:

• Capacitance value: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)
• Physical dimensions: 1.181" Dia × 1.260" Height (exact match required)
• Mounting type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Voltage rating: May be equal to or higher than 315 V (voltage derating is acceptable)
• Operating temperature range: May be extended beyond -25°C ~ 85°C
• Lifetime at temperature: May be extended beyond 3000 Hrs @ 85°C
• ESR and ripple current: May vary within manufacturer specifications
• Manufacturer: Different manufacturers acceptable if all mandatory parameters match

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and full ROHS3 compliance, ensuring continued availability and regulatory adherence.

B43642C9337M000 (EPCOS - TDK Electronics): This substitute provides a 400 V rated voltage with extended operating temperature range (-40°C ~ 105°C) and improved lifetime performance (3000 Hrs @ 105°C). The lower ESR of 270 mOhm @ 100Hz compared to the original 603 mOhm @ 120Hz indicates superior high-frequency performance characteristics. This part is suitable for applications requiring enhanced thermal stability and lower impedance.

LGU2F331MELB (Nichicon): This substitute maintains the original 315 V voltage rating while providing extended operating temperature range (-25°C ~ 105°C) and improved lifetime performance (3000 Hrs @ 105°C). The identical voltage rating ensures direct electrical compatibility without derating considerations. This part is suitable for applications where voltage matching is critical and thermal performance enhancement is desired.

450MXK330MEFCFA30X30 (Rubycon): This substitute provides the highest voltage rating at 450 V with extended operating temperature range (-25°C ~ 105°C) and improved lifetime performance (3000 Hrs @ 105°C). The elevated voltage rating provides maximum design margin for applications subject to voltage transients or future specification changes. This part is suitable for applications requiring maximum voltage headroom.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute for the SLPX331M315E3P3?

A: Yes. Aluminum electrolytic capacitors with voltage ratings equal to or higher than 315 V are acceptable substitutes. Higher voltage ratings provide additional design margin and do not compromise circuit function. The B43642C9337M000 (400 V) and 450MXK330MEFCFA30X30 (450 V) are both valid substitutes based on voltage derating principles.

Q: Are the physical dimensions identical across all substitute parts?

A: Yes. All substitute parts maintain identical physical dimensions: 1.181" diameter, 1.260" maximum seated height, and 0.394" lead spacing. All parts are compatible with existing PCB layouts and mechanical assemblies designed for the SLPX331M315E3P3.

Q: What is the difference between the LGU2F331MELB and the SLPX331M315E3P3?

A: Both parts share identical capacitance (330 µF), tolerance (±20%), voltage rating (315 V), and physical dimensions. The LGU2F331MELB offers an extended operating temperature range (-25°C ~ 105°C versus -25°C ~ 85°C) and improved lifetime performance (3000 Hrs @ 105°C versus 3000 Hrs @ 85°C). The manufacturer differs: Nichicon versus Cornell Dubilier Electronics.

Q: Does voltage derating affect capacitance or tolerance?

A: No. Capacitance value and tolerance remain unchanged regardless of voltage rating. A 450 V rated capacitor delivers the same 330 µF ±20% capacitance as the original 315 V part. Voltage rating affects only the maximum voltage the capacitor can safely withstand.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: Can I interchange these parts without circuit redesign?

A: Yes, provided the application voltage does not exceed 315 V. All substitute parts are pin-compatible, footprint-compatible, and electrically compatible with the original SLPX331M315E3P3. No circuit modifications are required for direct substitution.

Q: Which substitute offers the best thermal performance?

A: The B43642C9337M000, LGU2F331MELB, and 450MXK330MEFCFA30X30 all offer identical thermal performance improvements: extended operating temperature range to 105°C and lifetime rating of 3000 Hrs @ 105°C. The original part is rated only to 85°C with 3000 Hrs lifetime at that temperature.