SEK010M350ST Equivalent & Substitute Parts

Part Overview

The SEK010M350ST is a 1 µF 350 V aluminum electrolytic capacitor in a radial, can package manufactured by Cornell Dubilier Electronics (CDE). This through-hole component is classified as Active in product status and suitable for general-purpose applications requiring stable capacitance and voltage performance. The need to identify substitute parts arises when component availability is limited, manufacturing locations require regional sourcing, or design flexibility is needed for existing applications currently using this part.

Substiute Parts

SEK010M350ST

Cornell Dubilier Electronics (CDE)In Stock: 775SEK010M350ST Datasheet

Current PartRFQ

UVZ2G010MPD

NichiconIn Stock: 2491UVZ2G010MPD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SEK010M350ST is governed by the following electrical and mechanical parameters: capacitance value (1 µF), voltage rating (must equal or exceed 350 V), tolerance (±20%), operating temperature range (-40°C to 105°C), polarization (polar), and physical form factor (radial, can package with through-hole mounting). The lead spacing (0.138" / 3.50 mm) and case diameter (0.315" / 8.00 mm) establish mechanical compatibility requirements for board-level integration.

The UVZ2G010MPD from Nichicon meets these substitution criteria. It maintains identical capacitance (1 µF), identical tolerance (±20%), identical lead spacing and case diameter, and identical operating temperature range. The voltage rating of 400 V exceeds the 350 V requirement, providing headroom for voltage stress margin. Both components share the same polarization (polar), mounting type (through-hole), and package classification (radial, can). The UVZ2G010MPD differs in height (0.512" versus 0.433") and has reduced ripple current specifications and lifetime rating.

Parameter Comparison

Engineering Selection Recommendations

The SEK010M350ST is classified as Active product status, indicating it is available and recommended for new designs. The UVZ2G010MPD is classified as "Not For New Designs," which limits its application to legacy system support or replacement scenarios where original component procurement is unavailable.

Both components are ROHS3 Compliant and carry REACH Unaffected status, satisfying equivalent environmental compliance requirements. The higher voltage rating (400 V) of the UVZ2G010MPD provides additional margin for voltage stress. However, the UVZ2G010MPD exhibits reduced lifetime rating (1000 Hrs vs. 2000 Hrs at 105°C) and lower ripple current specifications across both frequency bands.

The selection between these parts should be based on design criticality, thermal environment, and ripple current demands. The UVZ2G010MPD is suitable for non-critical applications or as a temporary replacement where the reduced lifetime and ripple current performance remain within system operating margins.

Frequently Asked Questions (FAQ)

Q: Can the UVZ2G010MPD be used as a direct replacement for SEK010M350ST in all applications?

A: The UVZ2G010MPD provides electrical compatibility in terms of capacitance, tolerance, and voltage rating. However, it has reduced lifetime rating (1000 Hrs vs. 2000 Hrs at 105°C) and lower ripple current handling. Substitution is valid only when the application duty cycle does not require the full 2000-hour lifetime or when ripple current remains below the UVZ2G010MPD specifications.

Q: Are the physical dimensions compatible for PCB mounting?

A: Yes. Both components have identical lead spacing (0.138" / 3.50 mm) and case diameter (0.315" / 8.00 mm), ensuring PCB footprint compatibility. The UVZ2G010MPD is 0.079" (2.00 mm) taller, which may affect clearance in space-constrained enclosures. Verify available height margin in the design envelope.

Q: Does the higher voltage rating of the UVZ2G010MPD provide any design advantages?

A: The 400 V rating provides an additional 50 V margin above the 350 V operating requirement, which may improve reliability in applications subject to voltage transients or marginal power supply regulation. This rating advantage does not compensate for the reduced lifetime specification.

Q: Which component is preferred for new designs?

A: The SEK010M350ST is the preferred choice for new designs, as it carries Active product status, full 2000-hour lifetime specification, and higher ripple current rating. The UVZ2G010MPD is limited to applications where the SEK010M350ST is unavailable.

Q: What are the RoHS and REACH compliance implications of using either component?

A: Both components are ROHS3 Compliant and REACH Unaffected. They are suitable for applications requiring equivalent environmental compliance standards without material composition concerns.