SLPX331M420H5P3 Equivalent & Substitute Parts Reference

Part Overview

The SLPX331M420H5P3 is a 330 µF, 420 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active product status and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is RoHS3 compliant and REACH unaffected.

Equivalent and substitute parts are identified when they maintain the same capacitance value, tolerance, physical dimensions, mounting type, and package configuration while meeting or exceeding the voltage rating and thermal performance specifications. Substitute parts may offer improved reliability metrics such as extended operational lifetime or higher maximum operating temperature.

Substiute Parts

SLPX331M420H5P3

Cornell Dubilier Electronics (CDE)In Stock: 989SLPX331M420H5P3 Datasheet

Current PartRFQ

450VXG330MEFCSN35X35

RubyconIn Stock: 656787450VXG330MEFCSN35X35 Datasheet

UpgradeRFQ

LQS2W331MELC35

NichiconIn Stock: 1000244LQS2W331MELC35 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLPX331M420H5P3 are qualified based on the following criteria:

Mandatory Matching Parameters:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: Radial, Can - Snap-In (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)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Voltage - Rated: Substitute parts must equal or exceed 420 V
• Operating Temperature Range: Substitute parts may extend the upper temperature limit beyond 85°C
• Lifetime @ Temp.: Substitute parts may offer extended operational lifetime
• Ripple Current Ratings: Substitute parts may differ in ripple current specifications

The two identified substitute parts meet all mandatory matching criteria and provide equal or superior voltage ratings and thermal performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are qualified replacements for the SLPX331M420H5P3 based on electrical and mechanical compatibility.

450VXG330MEFCSN35X35 (Rubycon VXG Series): This substitute provides a 30 V voltage rating increase (450 V vs. 420 V) and extends the maximum operating temperature to 105°C. The component offers 5000 hours operational lifetime at 105°C, representing a 67% improvement over the original part's 3000-hour rating at 85°C. All physical dimensions, lead spacing, and mounting characteristics are identical. RoHS3 compliance and REACH unaffected status are maintained.

LQS2W331MELC35 (Nichicon LQS Series): This substitute provides a 30 V voltage rating increase (450 V vs. 420 V) and extends the maximum operating temperature to 105°C. The component maintains a 3000-hour operational lifetime specification at the elevated 105°C temperature. All physical dimensions, lead spacing, and mounting characteristics are identical. RoHS3 compliance and REACH unaffected status are maintained.

Both substitutes are Active product status components with full inventory availability. Selection between the two substitutes depends on application-specific lifetime requirements at elevated temperatures.

Frequently Asked Questions (FAQ)

Q: Can the 450VXG330MEFCSN35X35 or LQS2W331MELC35 be used as direct replacements for the SLPX331M420H5P3?

A: Yes. Both substitute parts are direct replacements. They maintain identical capacitance (330 µF), tolerance (±20%), physical dimensions (1.378" diameter, 1.457" height, 10.00mm lead spacing), package configuration (radial, can snap-in), and mounting type (through hole). The substitutes provide equal or higher voltage ratings (450 V vs. 420 V) and extended operating temperature ranges (-25°C to 105°C vs. -25°C to 85°C).

Q: What is the difference between the two substitute parts?

A: The primary difference is operational lifetime at elevated temperature. The Rubycon 450VXG330MEFCSN35X35 offers 5000 hours at 105°C, while the Nichicon LQS2W331MELC35 offers 3000 hours at 105°C. Both maintain identical electrical and mechanical specifications otherwise.

Q: Are the substitute parts physically interchangeable on the PCB?

A: Yes. All three parts share identical lead spacing (10.00mm), diameter (35.00mm), and maximum seated height (37.00mm). No PCB layout modifications are required for substitution.

Q: Do the substitute parts maintain regulatory compliance?

A: Yes. Both substitute parts are RoHS3 compliant and REACH unaffected, matching the compliance status of the original SLPX331M420H5P3.

Q: What is the significance of the higher voltage rating on the substitute parts?

A: The 450 V rating on both substitutes provides a 30 V margin above the original 420 V specification. This allows operation in circuits with higher voltage transients or provides additional safety margin in applications operating near the original part's rated voltage.

Q: Can I use these substitutes in applications requiring the original 420 V specification?

A: Yes. The substitute parts are rated for 450 V operation, which exceeds the 420 V requirement. Higher-rated components are suitable for applications designed for lower voltages.