SLP331M450E9P3

Part Overview

The SLP331M450E9P3 is a 330 µF 450 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active and serves general-purpose applications in power supply and filtering circuits. Alternative models are necessary to address supply chain variability, design optimization for performance parameters such as equivalent series resistance (ESR) and ripple current handling, and to leverage extended operational lifetimes or improved thermal performance across equivalent electrical specifications.

Key Parameters

Parameter	SLP331M450E9P3
Capacitance	330 µF
Voltage - Rated	450 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	1.005 Ohm @ 120 Hz
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Package / Case	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Size / Dimension	1.181" Dia (30.00 mm)
Height - Seated (Max)	2.047" (52.00 mm)
Mounting Type	Through Hole
Ripple Current @ 120 Hz	1.45 A
Ripple Current @ 20 kHz	2.13 A
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SLP331M450E9P3 is determined by strict adherence to the following critical parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 450 V minimum (higher ratings are acceptable upgrades)
Tolerance: ±20% (matching tolerance specification)
Package / Case: Radial, Can - Snap-In (physical form factor must match)
Lead Spacing: 0.394" (10.00 mm) (board footprint compatibility)
Size / Dimension: 1.181" Dia (30.00 mm) (mechanical fit requirement)
Mounting Type: Through Hole (assembly process compatibility)
Operating Temperature Range: Minimum -25°C ~ 105°C (thermal operating envelope)
RoHS/REACH Compliance: ROHS3 Compliant, REACH Unaffected (regulatory requirement)

Secondary performance parameters including ESR, lifetime hours, and ripple current ratings are optimization criteria but do not restrict substitution eligibility when primary parameters are met. Substitutes are grouped by classification: Parametric Equivalents (direct functional replacements), Direct Manufacturers (alternative sources with equivalent or superior specifications), and Upgrade options (higher voltage ratings with identical capacitance).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	ESR @ 120/100 Hz	Lifetime @ 105°C	Height (Max)	Product Status	RoHS Status
SLP331M450E9P3	Cornell Dubilier Electronics (CDE)	330 µF	450 V	1.005 Ohm @ 120 Hz	3000 Hrs	2.047" (52.00 mm)	Active	ROHS3 Compliant
381LR331M450K052	Cornell Dubilier Electronics (CDE)	330 µF	450 V	402 mOhm @ 120 Hz	3000 Hrs	2.047" (52.00 mm)	Active	ROHS3 Compliant
381LX331M450K052	Cornell Dubilier Electronics (CDE)	330 µF	450 V	—	3000 Hrs	2.047" (52.00 mm)	Active	ROHS3 Compliant
450MXG330MEFCSN30X40	Rubycon	330 µF	450 V	—	3000 Hrs	1.654" (42.00 mm)	Active	ROHS3 Compliant
450MXK330MEFCFA30X30	Rubycon	330 µF	450 V	—	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
450VXH330MEFCSN30X40	Rubycon	330 µF	450 V	—	5000 Hrs	1.654" (42.00 mm)	Active	ROHS3 Compliant
B43504A5337M000	EPCOS - TDK Electronics	330 µF	450 V	410 mOhm @ 100 Hz	3000 Hrs	2.047" (52.00 mm)	Not For New Designs	ROHS3 Compliant
B43509A5337M000	EPCOS - TDK Electronics	330 µF	450 V	300 mOhm @ 100 Hz	3000 Hrs	2.047" (52.00 mm)	Active	ROHS3 Compliant
ELXS451VSN331MR40S	Chemi-Con	330 µF	450 V	—	5000 Hrs	1.654" (42.00 mm)	Active	ROHS3 Compliant
MAL215947331E3	Vishay Beyschlag/Draloric/BC Components	330 µF	450 V	600 mOhm @ 100 Hz	5000 Hrs	2.047" (52.00 mm)	Active	ROHS3 Compliant
ELHS501VSN331MR50S	Chemi-Con	330 µF	500 V	—	5000 Hrs	2.067" (52.50 mm)	Active	RoHS Compliant

Engineering Selection Recommendations

Active Status Parts for New Designs: The following parts are designated Active and suitable for incorporation into new designs: 381LR331M450K052, 381LX331M450K052, 450MXG330MEFCSN30X40, 450MXK330MEFCFA30X30, 450VXH330MEFCSN30X40, B43509A5337M000, ELXS451VSN331MR40S, MAL215947331E3, and ELHS501VSN331MR50S. The original SLP331M450E9P3 is Active.

Discontinued Parts: B43504A5337M000 (EPCOS - TDK Electronics) is classified as Not For New Designs and should not be selected for new product development.

Compliance Status: All substitute parts meet ROHS3 compliance or equivalent RoHS compliance and REACH Unaffected status, ensuring regulatory alignment with environmental standards.

Height Profile Variants: 450MXK330MEFCFA30X30 offers the most compact height (1.260" / 32.00 mm), suitable for space-constrained applications. Standard height options are available at 2.047" (52.00 mm), and intermediate heights at 1.654" (42.00 mm).

Extended Operational Life: 450VXH330MEFCSN30X40, ELXS451VSN331MR40S, MAL215947331E3, and ELHS501VSN331MR50S provide 5000-hour lifetime ratings at 105°C, compared to the standard 3000-hour specification of the SLP331M450E9P3.

Voltage Upgrade Path: ELHS501VSN331MR50S provides a 500 V rated upgrade option with extended 5000-hour lifetime, supporting higher-voltage system designs while maintaining 330 µF capacitance.

Frequently Asked Questions (FAQ)

Q: Can I substitute a part with a different height while maintaining board compatibility? A: Physical board fit depends on available PCB space. Parts such as 450MXK330MEFCFA30X30 (1.260" height) are shorter than the original SLP331M450E9P3 (2.047" height) and may fit tighter mounting spaces. Parts with greater height, such as ELHS501VSN331MR50S (2.067" height), require verification that enclosure clearance is available. Lead spacing (0.394" / 10.00 mm) and diameter (1.181" / 30.00 mm) must remain constant for footprint compatibility.

Q: What is the significance of ESR (Equivalent Series Resistance) in selecting a substitute? A: ESR affects ripple current handling and heat dissipation in the capacitor. Lower ESR values (e.g., 300 mOhm in B43509A5337M000) dissipate less heat and support higher ripple current capacity. The original SLP331M450E9P3 specifies 1.005 Ohm @ 120 Hz; alternatives with lower ESR values provide improved performance but are not required for functional substitution.

Q: Why would I select a higher voltage-rated part such as ELHS501VSN331MR50S (500 V) when my circuit requires 450 V? A: Higher voltage ratings provide additional design margin and may extend component operational life. ELHS501VSN331MR50S offers both 500 V rating and extended 5000-hour lifetime, supporting applications requiring enhanced reliability. The higher voltage capability does not degrade performance in 450 V circuits.

Q: What does "Active" versus "Not For New Designs" mean for component selection? A: Parts with Active status are in full production and recommended for new product designs. The B43504A5337M000 designation of "Not For New Designs" indicates EPCOS - TDK Electronics has moved to successor models and may have limited availability. Active parts should be prioritized for new development programs.

Q: Are all substitute parts ROHS3 compliant? A: All substitute parts listed are either ROHS3 Compliant or RoHS Compliant, meeting environmental regulatory requirements. REACH Unaffected status is maintained across all alternatives, ensuring no subject substance restrictions apply.

Q: How do ripple current ratings affect my component selection? A: Ripple current capacity determines the maximum AC current the capacitor can safely conduct at specified frequency without exceeding temperature limits. The original SLP331M450E9P3 specifies 1.45 A @ 120 Hz and 2.13 A @ 20 kHz. Substitutes with higher ripple current ratings (e.g., 450MXG330MEFCSN30X40 at 1.75 A @ 120 Hz) provide additional thermal margin in high-current ripple applications.

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