SLP331M385H5P3 Equivalent & Substitute Parts

Part Overview

The SLP331M385H5P3 is a 330 µF, 385 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is rated for general-purpose applications with a 3000-hour lifetime at 105°C and an operating temperature range of -25°C to 105°C. The part is Active in product status and ROHS3 compliant.

Equivalent and substitute parts are necessary when the original component becomes unavailable, when design requirements demand enhanced performance characteristics such as higher voltage ratings or extended lifetime specifications, or when alternative manufacturers' components meet the same electrical and mechanical parameters within acceptable tolerances.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage - Rated	385	V
Tolerance	±20%	-
Operating Temperature Range	-25°C to 105°C	-
Lifetime @ Temperature	3000	Hrs @ 105°C
Polarization	Polar	-
Package / Case	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Lead Spacing	0.394" (10.00mm)	-
Size / Dimension	1.378" Dia (35.00mm)	-
Height - Seated (Max)	1.457" (37.00mm)	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SLP331M385H5P3 is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package / Case: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.394" (10.00mm) (exact match required)
Size / Dimension: 1.378" Dia (35.00mm) (exact match required)
Height - Seated (Max): 1.457" (37.00mm) (exact match required)

Allowable Variation Parameters:

Voltage - Rated: Equal to or greater than 385 V
Operating Temperature Range: Equal to or broader than -25°C to 105°C
Lifetime @ Temperature: Equal to or greater than 3000 Hrs @ 105°C
ESR (Equivalent Series Resistance): Lower values are acceptable
Ripple Current: Equal to or greater than specified values

All substitute parts listed maintain identical mechanical dimensions and mounting characteristics, ensuring direct physical and electrical compatibility within the specified parameter tolerances.

Parameter Comparison

Parameter	SLP331M385H5P3 (Main)	381LX331M400A032	450VXG330MEFCSN35X35	B43504B9337M000	LQS2W331MELC35	MAL215966331E3
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Rubycon	EPCOS - TDK Electronics	Nichicon	Vishay Beyschlag/Draloric/BC Components
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	385 V	400 V	450 V	400 V	450 V	400 V
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-40°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Lifetime @ Temp.	3000 Hrs @ 105°C	3000 Hrs @ 105°C	5000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C	5000 Hrs @ 105°C
Polarization	Polar	Polar	Polar	Polar	Polar	Polar
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	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	Through Hole	Through Hole
Lead Spacing	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Size / Dimension	1.378" Dia (35.00mm)	1.378" Dia (35.00mm)	1.378" Dia (35.00mm)	1.378" Dia (35.00mm)	1.378" Dia (35.00mm)	1.378" Dia (35.00mm)
Height - Seated (Max)	1.457" (37.00mm)	1.457" (37.00mm)	1.457" (37.00mm)	1.457" (37.00mm)	1.457" (37.00mm)	1.457" (37.00mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Not For New Designs	Active	Active

Engineering Selection Recommendations

Active Status Parts (Recommended for New Designs):

The following substitute parts maintain Active product status and are suitable for new design implementations:

381LX331M400A032 (Cornell Dubilier Electronics): Provides 400 V rated voltage with identical mechanical and electrical characteristics to the main part. Maintains 3000-hour lifetime specification at 105°C.
450VXG330MEFCSN35X35 (Rubycon): Offers enhanced voltage rating of 450 V and extended lifetime of 5000 hours at 105°C. Suitable for applications requiring higher voltage margin and extended operational life.
LQS2W331MELC35 (Nichicon): Delivers 450 V rated voltage with 3000-hour lifetime at 105°C. Provides voltage upgrade path with maintained reliability specifications.
MAL215966331E3 (Vishay Beyschlag/Draloric/BC Components): Rated at 400 V with extended 5000-hour lifetime at 105°C. Offers improved long-term reliability for demanding applications.

Obsolescence Consideration:

B43504B9337M000 (EPCOS - TDK Electronics): Carries "Not For New Designs" product status. This part is electrically and mechanically compatible but should not be selected for new design implementations. Use only for replacement of existing installations where the original part is no longer available.

All listed substitute parts comply with ROHS3 and REACH requirements, matching the regulatory compliance profile of the main part.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SLP331M385H5P3 with a higher voltage-rated capacitor?

A: Yes. Substitute parts rated at 400 V or 450 V are electrically compatible with the SLP331M385H5P3 (385 V rated). Higher voltage ratings provide additional safety margin and do not degrade circuit performance. All substitute parts listed maintain the same 330 µF capacitance and ±20% tolerance.

Q: Are all substitute parts mechanically identical to the main part?

A: Yes. All substitute parts share identical mechanical specifications: 1.378" diameter (35.00mm), 1.457" maximum seated height (37.00mm), 0.394" lead spacing (10.00mm), and radial snap-in package configuration. Direct physical substitution is possible without PCB layout modifications.

Q: What is the difference between 3000-hour and 5000-hour lifetime ratings?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation reaches specified limits. Parts with 5000-hour ratings (450VXG330MEFCSN35X35 and MAL215966331E3) provide extended service life in high-temperature environments compared to 3000-hour rated parts.

Q: Why is B43504B9337M000 marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and recommends against using this part in new product designs. The part remains electrically and mechanically compatible and may be used only for replacement of existing installations or legacy system maintenance.

Q: Do all substitute parts have the same ESR (Equivalent Series Resistance) characteristics?

A: ESR values vary among manufacturers. The main part specifies 1.005 Ohm @ 120Hz. Substitute parts with lower ESR values (such as B43504B9337M000 at 270 mOhm @ 100Hz) provide improved performance in ripple current handling and thermal characteristics. ESR data is not provided for all substitutes; consult manufacturer datasheets for specific applications requiring ESR optimization.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant status, matching the regulatory compliance of the main part. All parts are also REACH Unaffected, ensuring compliance with environmental and hazardous substance regulations.

Q: Can I use these substitutes in existing circuit boards designed for the SLP331M385H5P3?

A: Yes. All substitute parts maintain identical lead spacing (10.00mm), package type (radial snap-in), and mounting configuration (through-hole). Direct substitution on existing PCBs is possible without design modifications.

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