SLP331M250E1P3 Equivalent & Substitute Parts

Part Overview

The SLP331M250E1P3 is a 330 µF, 250 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 reliable energy storage and filtering in power supply circuits. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 3000 hours at 105°C.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits component optimization while maintaining electrical and mechanical compatibility within the application circuit.

Substiute Parts

SLP331M250E1P3

Cornell Dubilier Electronics (CDE)In Stock: 1027SLP331M250E1P3 Datasheet

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SLP331M250A3P3

Cornell Dubilier Electronics (CDE)In Stock: 4403SLP331M250A3P3 Datasheet

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SLP331M250A7P3

Cornell Dubilier Electronics (CDE)In Stock: 3904SLP331M250A7P3 Datasheet

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LGU2E331MELB

NichiconIn Stock: 1358LGU2E331MELB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLP331M250E1P3 is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 250 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Package Type: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)

Compatible Variation Parameters:

• ESR: 603 mOhm (substitute parts may vary within acceptable ripple current specifications)
• Lifetime @ Temperature: 3000 Hrs @ 105°C (substitute parts must meet or exceed this specification)
• Operating Temperature Range: -25°C to 105°C (substitute parts must accommodate this range or broader)
• Manufacturer: Different manufacturers permitted if all electrical and mechanical parameters align
• Physical Dimensions (Height): Variation permitted within mechanical envelope constraints of the application

The substitute parts SLP331M250A3P3, SLP331M250A7P3, and LGU2E331MELB satisfy all mandatory matching parameters and are therefore classified as direct electrical and mechanical equivalents.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—SLP331M250A3P3, SLP331M250A7P3, and LGU2E331MELB—are classified as Active products with ROHS3 compliance and REACH Unaffected status, matching the regulatory compliance profile of the main part SLP331M250E1P3.

CDE Internal Substitutes (SLP331M250A3P3 and SLP331M250A7P3): These parts maintain identical electrical specifications (330 µF, 250 V, ±20%, 603 mOhm ESR, 3000 Hrs @ 105°C) and identical lead spacing (10.00mm). Both are manufactured by the same supplier (Cornell Dubilier Electronics) and carry the same series designation (SLP0712TE). The primary difference is physical height: SLP331M250A3P3 measures 1.181" (30.00mm) height with 0.866" (22.00mm) diameter, while SLP331M250A7P3 measures 1.575" (40.00mm) height with 0.866" (22.00mm) diameter. Selection between these variants depends on available PCB mounting space and mechanical envelope constraints.

Cross-Manufacturer Substitute (LGU2E331MELB): The Nichicon LGU2E331MELB provides identical electrical performance (330 µF, 250 V, ±20%, 3000 Hrs @ 105°C) with an extended operating temperature range (-40°C to 105°C versus -25°C to 105°C). Physical dimensions match the main part exactly (1.181" diameter, 0.984" height, 10.00mm lead spacing). ESR specification is not provided for this part. The LGU2E331MELB is suitable for applications requiring broader temperature operation or when cross-manufacturer sourcing is required for supply chain resilience.

Frequently Asked Questions (FAQ)

Q: Can SLP331M250A3P3 or SLP331M250A7P3 be used as direct replacements for SLP331M250E1P3?

A: Yes. Both parts are direct electrical equivalents with identical capacitance (330 µF), voltage rating (250 V), tolerance (±20%), ESR (603 mOhm), and lifetime specifications (3000 Hrs @ 105°C). Lead spacing is identical at 10.00mm. The primary consideration is physical height: verify that the application PCB mounting area accommodates the substitute part's height dimension (1.181" for A3P3 or 1.575" for A7P3 versus 0.984" for E1P3).

Q: What is the difference between SLP331M250A3P3 and SLP331M250A7P3?

A: Both parts are electrically identical. The difference is physical height: SLP331M250A3P3 is 1.181" (30.00mm) tall, while SLP331M250A7P3 is 1.575" (40.00mm) tall. Both have reduced diameter (0.866" or 22.00mm) compared to the main part. Selection depends on available vertical space in the application enclosure or PCB layout.

Q: Can the Nichicon LGU2E331MELB replace the CDE SLP331M250E1P3?

A: Yes. The LGU2E331MELB provides identical electrical specifications and physical dimensions to the main part. It offers an extended operating temperature range (-40°C to 105°C). This part is suitable when cross-manufacturer sourcing is required or when the broader temperature range is beneficial to the application.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts (SLP331M250A3P3, SLP331M250A7P3, and LGU2E331MELB) are ROHS3 Compliant and REACH Unaffected, matching the regulatory status of the main part SLP331M250E1P3.

Q: What is the significance of ESR (Equivalent Series Resistance) in selecting a substitute?

A: ESR affects the capacitor's ability to handle ripple current and influences voltage ripple performance in the circuit. The main part and both CDE substitutes specify 603 mOhm ESR. The Nichicon LGU2E331MELB does not specify ESR but provides ripple current ratings (1.3 A @ 120 Hz, 1.95 A @ 50 kHz). If ripple current specifications are critical to the application, verify that the substitute part's ripple current rating meets or exceeds the circuit requirement.

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

A: Electrical substitution is direct. Mechanical substitution requires verification of physical dimensions. The main part (E1P3) measures 1.181" diameter × 0.984" height. SLP331M250A3P3 and SLP331M250A7P3 have reduced diameter (0.866") but greater height. LGU2E331MELB matches the main part's dimensions exactly. If the PCB layout has tight mechanical constraints, verify that the substitute part's physical envelope fits within the allocated mounting space.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are: SLP331M250E1P3 (982 Pcs), SLP331M250A3P3 (4312 Pcs), SLP331M250A7P3 (3894 Pcs), and LGU2E331MELB (1294 Pcs). All parts are listed as New Original In Stock.