SLP331M315E3P3 Equivalent & Substitute Parts

Part Overview

The SLP331M315E3P3 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 high-capacitance energy storage in power supply and filtering circuits. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 3000 hours at 105°C.

Equivalent and substitute parts are identified when alternative manufacturers produce capacitors with matching or superior electrical and mechanical specifications that maintain functional compatibility within the same application context. Substitutes are necessary to address supply chain availability, inventory management, and design flexibility across multiple sourcing options.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage - Rated	315	V
Tolerance	±20	%
ESR @ 120Hz	1.005	Ohm
Lifetime @ 105°C	3000	Hrs
Operating Temperature Range	-25 to 105	°C
Lead Spacing	10.00	mm
Diameter	30.00	mm
Height - Seated (Max)	32.00	mm
Package Type	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Polarization	Polar	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution logic for the SLP331M315E3P3 is based on the following critical parameters that must be maintained or exceeded:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 10.00 mm (exact match required)
Physical Dimensions: 30.00 mm diameter, 32.00 mm height maximum (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Parameters Allowed to Exceed:

Voltage - Rated: 315 V minimum (higher voltage ratings are acceptable as upgrades)
Lifetime @ 105°C: 3000 hours minimum (equal or greater acceptable)
Operating Temperature Range: -25°C to 105°C minimum (equal or extended range acceptable)
Ripple Current: Equal or greater values acceptable

Compliance Requirements:

RoHS3 Compliant (mandatory)
REACH Unaffected (mandatory)
ECCN: EAR99 (maintained across all substitutes)

Substitute parts are classified into two categories: Upgrade substitutes (higher voltage rating) and Parametric Equivalent substitutes (matching voltage rating).

Parameter Comparison

Parameter	SLP331M315E3P3 (CDE)	450MXK330MEFCFA30X30 (Rubycon)	B43642C9337M000 (EPCOS - TDK)	LGU2F331MELB (Nichicon)
Manufacturer	Cornell Dubilier Electronics	Rubycon	EPCOS - TDK Electronics	Nichicon
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage - Rated	315 V	450 V	400 V	315 V
Tolerance	±20%	±20%	±20%	±20%
ESR	1.005 Ohm @ 120Hz	Not Specified	270 mOhm @ 100Hz	Not Specified
Lifetime @ 105°C	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-40°C to 105°C	-25°C to 105°C
Ripple Current @ 120Hz	1.33 A	1.58 A	1.51 A	1.33 A
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)	32.00 mm	32.00 mm	32.00 mm	32.00 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
Polarization	Polar	Polar	Polar	Polar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent Substitute:

The LGU2F331MELB (Nichicon) is a parametric equivalent to the SLP331M315E3P3. This part maintains identical capacitance (330 µF), voltage rating (315 V), tolerance (±20%), physical dimensions (30.00 mm diameter, 32.00 mm height), lead spacing (10.00 mm), and operating temperature range (-25°C to 105°C). Both parts share the same 3000-hour lifetime rating at 105°C and identical ripple current performance at 120 Hz (1.33 A). The LGU2F331MELB is ROHS3 Compliant and REACH Unaffected, meeting all regulatory requirements. This substitute is suitable for direct replacement in applications where the original CDE part is unavailable.

Upgrade Substitutes:

The 450MXK330MEFCFA30X30 (Rubycon) provides a voltage upgrade to 450 V while maintaining all other critical parameters. This part is suitable for applications requiring higher voltage margin or operating in elevated voltage environments. The 450 V rating exceeds the original 315 V specification, providing additional safety margin. Ripple current performance is enhanced at 1.58 A @ 120 Hz compared to 1.33 A in the original part. Physical compatibility is maintained across all dimensions and lead spacing.

The B43642C9337M000 (EPCOS - TDK Electronics) provides a voltage upgrade to 400 V and an extended operating temperature range of -40°C to 105°C (compared to -25°C to 105°C). This part features improved ESR performance at 270 mOhm @ 100Hz and enhanced ripple current capability at 1.51 A @ 100 Hz. Physical dimensions and lead spacing remain identical. This substitute is appropriate for applications requiring lower temperature operation or superior high-frequency performance characteristics.

All substitute parts maintain Active product status and full regulatory compliance (ROHS3, REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can the LGU2F331MELB be used as a direct replacement for the SLP331M315E3P3?

A: Yes. The LGU2F331MELB is a parametric equivalent with identical capacitance (330 µF), voltage rating (315 V), tolerance (±20%), physical dimensions, lead spacing, and operating temperature range. Both parts are rated for 3000 hours at 105°C and deliver 1.33 A ripple current at 120 Hz. Direct PCB mounting compatibility is maintained.

Q: What is the advantage of using the 450MXK330MEFCFA30X30 over the original SLP331M315E3P3?

A: The 450MXK330MEFCFA30X30 provides a higher voltage rating (450 V versus 315 V), offering increased voltage margin and safety headroom in power supply applications. Enhanced ripple current capability (1.58 A @ 120 Hz versus 1.33 A) supports higher current demands. Physical compatibility is maintained, allowing direct substitution in existing designs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—LGU2F331MELB, 450MXK330MEFCFA30X30, and B43642C9337M000—are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Can the B43642C9337M000 be used in applications requiring operation below -25°C?

A: Yes. The B43642C9337M000 supports an extended operating temperature range of -40°C to 105°C, compared to -25°C to 105°C for the original part. This extended lower temperature capability makes it suitable for applications requiring sub-zero operation.

Q: Do all substitute parts use the same snap-in package configuration?

A: Yes. All substitute parts use the Radial, Can - Snap-In package type with identical lead spacing (10.00 mm), diameter (30.00 mm), and maximum seated height (32.00 mm). Through-hole mounting compatibility is maintained across all parts.

Q: What is the difference between an upgrade substitute and a parametric equivalent?

A: A parametric equivalent (LGU2F331MELB) matches all electrical and mechanical specifications of the original part. An upgrade substitute (450MXK330MEFCFA30X30 or B43642C9337M000) exceeds one or more specifications—such as voltage rating or temperature range—while maintaining physical compatibility and all other critical parameters.

Q: Are there any ESR differences between the substitute parts?

A: The B43642C9337M000 specifies ESR at 270 mOhm @ 100Hz, which is lower than the original SLP331M315E3P3 at 1.005 Ohm @ 120Hz, indicating superior high-frequency performance. The 450MXK330MEFCFA30X30 and LGU2F331MELB do not specify ESR values in available documentation.

Q: Can these parts be used interchangeably in existing designs without PCB modification?

A: Yes. All substitute parts maintain identical physical dimensions, lead spacing (10.00 mm), and snap-in package configuration. No PCB layout modifications are required for direct substitution.

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