SLP331M315C7P3 Equivalent & Substitute Parts

Part Overview

The SLP331M315C7P3 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 product status and is designed for general-purpose applications requiring high-voltage energy storage and filtering. 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 to provide alternative sourcing options when the primary part is unavailable or when design requirements necessitate upgraded electrical characteristics such as higher voltage ratings or extended operational lifetime.

Substiute Parts

SLP331M315C7P3

Cornell Dubilier Electronics (CDE)In Stock: 921SLP331M315C7P3 Datasheet

Current PartRFQ

ELXS401VSN331MQ40S

Chemi-ConIn Stock: 989ELXS401VSN331MQ40S Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLP331M315C7P3 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Capacitance value: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)
• Mounting type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Allowable Upgrade Parameters:

• Voltage rating: Equal to or greater than 315 V
• Lifetime @ 105°C: Equal to or greater than 3000 hours
• Operating temperature range: Must encompass -25°C to 105°C minimum
• Ripple current ratings: Equal to or greater than specified values

The ELXS401VSN331MQ40S from Chemi-Con qualifies as a substitute because it maintains identical capacitance, tolerance, package configuration, lead spacing, and mounting type while providing upgraded voltage rating (400 V) and extended lifetime (5000 hours @ 105°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Part: SLP331M315C7P3 (Cornell Dubilier Electronics)

Selection criteria: Use when 315 V rating is sufficient for the application, 3000-hour lifetime meets design requirements, and CDE component sourcing is preferred or specified.

Substitute Part: ELXS401VSN331MQ40S (Chemi-Con)

Selection criteria: Use when higher voltage margin is required (400 V vs. 315 V), extended operational lifetime is necessary (5000 hours vs. 3000 hours @ 105°C), or when Chemi-Con LXS series components are preferred. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across applications.

The dimensional compatibility between parts (lead spacing, height, and snap-in package configuration) permits direct mechanical and electrical substitution in through-hole PCB applications without circuit board redesign.

Frequently Asked Questions (FAQ)

Q: Can the ELXS401VSN331MQ40S replace the SLP331M315C7P3 in all applications?

A: Yes, the ELXS401VSN331MQ40S is electrically and mechanically compatible as a direct substitute. The higher voltage rating (400 V) and extended lifetime (5000 hours @ 105°C) represent performance upgrades that do not compromise compatibility with circuits designed for the original 315 V, 3000-hour specification.

Q: Are there dimensional differences between these parts?

A: The diameter differs slightly (25.00mm vs. 25.40mm), but both parts maintain identical lead spacing (10.00mm) and seated height (42.00mm). This minor diameter variation is within standard manufacturing tolerances for snap-in can packages and does not affect PCB mounting or circuit performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SLP331M315C7P3 and ELXS401VSN331MQ40S are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component use.

Q: What is the significance of the ±20% tolerance specification?

A: The ±20% tolerance indicates that actual capacitance values may range from 264 µF to 396 µF. Both parts share this tolerance specification, ensuring equivalent performance variation characteristics in circuit applications.

Q: How do ripple current ratings affect substitution?

A: The ELXS401VSN331MQ40S provides equal or higher ripple current capacity at all specified frequencies (1.47 A @ 120 Hz vs. 1.33 A, and 2.1021 A @ 50 kHz vs. 1.96 A @ 20 kHz). This upgrade capability ensures the substitute part can handle equivalent or greater thermal stress from AC ripple current in power supply and filtering applications.

Q: What does "snap-in" package configuration mean for installation?

A: Snap-in refers to the mechanical mounting method where the capacitor leads insert into PCB holes and are secured by the snap-fit mechanism of the can body. Both parts use identical snap-in configuration, permitting direct installation without modification to existing PCB designs or mounting fixtures.