SLPX331M350C7P3 Equivalent & Substitute Parts

Part Overview

The SLPX331M350C7P3 is a 330 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is designed for general-purpose applications requiring through-hole mounting with rated specifications of 603 mOhm ESR at 120 Hz and a 3000-hour lifetime at 85°C. The part maintains Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit higher voltage or temperature ratings.

Substiute Parts

SLPX331M350C7P3

Cornell Dubilier Electronics (CDE)In Stock: 1030SLPX331M350C7P3 Datasheet

Current PartRFQ

ELXS401VSN331MQ40S

Chemi-ConIn Stock: 989ELXS401VSN331MQ40S Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLPX331M350C7P3 is determined by the following critical parameters:

Capacitance Value: 330 µF (exact match required)

Tolerance: ±20% (must match or be tighter)

Voltage Rating: Substitute parts must equal or exceed 350 V

Package Type: Radial, Can - Snap-In (mechanical compatibility)

Lead Spacing: 0.394" (10.00 mm) (PCB layout compatibility)

Mounting Type: Through Hole (assembly process compatibility)

Polarization: Polar (electrical circuit requirement)

Compliance: ROHS3 Compliant, REACH Unaffected (regulatory requirement)

The substitute part ELXS401VSN331MQ40S from Chemi-Con meets all substitution criteria with an elevated voltage rating of 400 V, which provides additional design margin while maintaining identical capacitance, tolerance, lead spacing, package configuration, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution: The ELXS401VSN331MQ40S is a direct substitute for the SLPX331M350C7P3 in applications where the circuit design permits a 400 V rated voltage. Both parts are Active products with ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment.

Voltage Margin: The substitute part provides 50 V additional voltage rating (400 V vs. 350 V), which increases design margin and system reliability in circuits operating at or near the original 350 V specification.

Temperature Performance: The Chemi-Con substitute extends the operating temperature range to 105°C and provides 5000-hour lifetime at 105°C compared to 3000 hours at 85°C for the original part, supporting applications with elevated thermal requirements.

Physical Compatibility: Lead spacing (0.394" / 10.00 mm) and seated height (1.654" / 42.00 mm) are identical, ensuring PCB layout compatibility. Diameter increases from 25.00 mm to 25.40 mm; verify clearance in confined mounting spaces.

Compliance: Both parts maintain ROHS3 compliance and REACH Unaffected status, suitable for regulated markets and applications with environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the ELXS401VSN331MQ40S replace the SLPX331M350C7P3 in any application?

A: The ELXS401VSN331MQ40S is a direct substitute when the circuit design permits a 400 V rated voltage. The higher voltage rating does not degrade performance in circuits designed for 350 V operation. Verify that the 0.4 mm increase in diameter (25.40 mm vs. 25.00 mm) does not conflict with PCB layout constraints.

Q: What is the significance of the voltage rating difference?

A: The substitute part's 400 V rating provides 50 V additional design margin above the original 350 V specification. This margin improves reliability and accommodates voltage transients or overshoot conditions in the circuit.

Q: Are the lead spacings identical?

A: Yes. Both parts have 0.394" (10.00 mm) lead spacing, ensuring direct PCB footprint compatibility without layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SLPX331M350C7P3 and ELXS401VSN331MQ40S are ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements for electronics manufacturing and distribution.

Q: What is the difference in physical size?

A: The diameter increases from 0.984" (25.00 mm) to 1.000" (25.40 mm). The seated height remains 1.654" (42.00 mm) for both parts. Confirm adequate clearance in the PCB assembly before substitution.

Q: How do the thermal specifications compare?

A: The substitute part operates to 105°C with a 5000-hour lifetime at that temperature, compared to 85°C with 3000-hour lifetime for the original part. This provides enhanced performance in thermally demanding applications.

Q: Are both parts currently available?

A: Both parts maintain Active product status. Inventory availability should be confirmed with the respective manufacturers or authorized distributors.