SEK330M200ST Equivalent & Substitute Parts Reference

Part Overview

The SEK330M200ST is a 33 µF, 200 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is designed for general-purpose applications requiring through-hole mounting. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 2000 hours at 105°C.

Equivalent and substitute parts are identified when design requirements permit voltage rating upgrades, extended operational lifetime, or alternative manufacturer sourcing while maintaining core electrical and mechanical compatibility within the 33 µF capacitance and ±20% tolerance specification.

Substiute Parts

SEK330M200ST

Cornell Dubilier Electronics (CDE)In Stock: 959SEK330M200ST Datasheet

Current PartRFQ

EKXG201ELL330MJ20S

Chemi-ConIn Stock: 2095EKXG201ELL330MJ20S Datasheet

DirectRFQ

EKMG251ELL330MK20S

Chemi-ConIn Stock: 1475EKMG251ELL330MK20S Datasheet

UpgradeRFQ

EKXJ351ELL330MK20S

Chemi-ConIn Stock: 1240EKXJ351ELL330MK20S Datasheet

UpgradeRFQ

UCS2E330MHD

NichiconIn Stock: 1374UCS2E330MHD Datasheet

UpgradeRFQ

UCY2V330MHD

NichiconIn Stock: 1747UCY2V330MHD Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are organized into two categories based on voltage rating classification:

Direct Equivalent (Same Voltage Rating - 200V):

• EKXG201ELL330MJ20S (Chemi-Con KXG Series)

This part maintains the 200 V voltage rating of the main part while offering extended lifetime (8000 hours at 105°C versus 2000 hours). Lead spacing, polarization, mounting type, and package configuration remain identical.

Voltage Upgrade Substitutes (250V and 350V Ratings):

• EKMG251ELL330MK20S (Chemi-Con KMG Series, 250V)
• EKXJ351ELL330MK20S (Chemi-Con KXJ Series, 350V)
• UCS2E330MHD (Nichicon UCS Series, 250V)
• UCY2V330MHD (Nichicon UCY Series, 350V)

These parts provide higher voltage ratings (250V or 350V) suitable for applications where the original 200V specification can be exceeded. All maintain 33 µF capacitance, ±20% tolerance, identical lead spacing (5.00mm), through-hole mounting, and radial can package configuration. Voltage upgrades are permitted when circuit design allows higher voltage components without adverse effects.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Same Voltage): EKXG201ELL330MJ20S is the direct equivalent for applications requiring identical 200V voltage specification. This Chemi-Con part provides four times the operational lifetime (8000 hours versus 2000 hours at 105°C) while maintaining all mechanical and electrical compatibility parameters. Physical dimensions are slightly smaller, which may provide layout advantages in space-constrained applications.

Voltage Upgrade Selection (250V Rating): EKMG251ELL330MK20S (Chemi-Con) and UCS2E330MHD (Nichicon) both provide 250V rating with 33 µF capacitance. UCS2E330MHD offers extended lifetime (10000 hours at 105°C) compared to EKMG251ELL330MK20S (2000 hours). Both are ROHS3 compliant. Selection between these two depends on lifetime requirements and manufacturer preference.

Voltage Upgrade Selection (350V Rating): EKXJ351ELL330MK20S (Chemi-Con) and UCY2V330MHD (Nichicon) both provide 350V rating. UCY2V330MHD offers superior lifetime (12000 hours at 105°C versus 10000 hours). EKXJ351ELL330MK20S carries AEC-Q200 automotive qualification. UCY2V330MHD is REACH Affected; EKXJ351ELL330MK20S is REACH Unaffected.

All substitute parts maintain identical lead spacing (5.00mm), through-hole mounting configuration, radial can package, and ROHS3 compliance with the original SEK330M200ST.

Frequently Asked Questions (FAQ)

Q: Can EKXG201ELL330MJ20S be used as a direct drop-in replacement for SEK330M200ST?

A: Yes. Both parts share identical voltage rating (200V), capacitance (33 µF), tolerance (±20%), lead spacing (5.00mm), polarization (polar), and through-hole radial can package. Physical dimensions differ slightly, but the component footprint remains compatible with standard PCB layouts designed for 5.00mm lead spacing.

Q: What is the primary advantage of using a 250V or 350V rated substitute instead of the original 200V part?

A: Higher voltage-rated capacitors provide design margin in applications where voltage transients or supply variations may occur. Additionally, 250V and 350V substitutes in this product line offer extended operational lifetime (10000-12000 hours at 105°C) compared to the original 2000-hour specification, improving long-term reliability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. However, UCY2V330MHD is REACH Affected, while other substitutes are REACH Unaffected. Verify REACH compliance requirements for your specific application and supply chain.

Q: Does the physical size difference between EKXG201ELL330MJ20S and SEK330M200ST affect PCB layout?

A: Lead spacing remains identical at 5.00mm, ensuring compatibility with existing PCB footprints. EKXG201ELL330MJ20S has a smaller diameter (0.394" versus 0.512") and slightly shorter height (0.787" versus 0.827"), which may provide layout advantages but does not affect electrical compatibility or mounting requirements.

Q: Which substitute part offers the longest operational lifetime?

A: UCY2V330MHD (Nichicon UCY Series, 350V rating) provides 12000 hours at 105°C, the longest lifetime among all listed substitutes. This part is suitable for applications requiring maximum reliability over extended operational periods.

Q: Can I use a 350V-rated substitute in a circuit designed for 200V operation?

A: Yes. A 350V-rated capacitor operates safely at 200V. The voltage rating indicates the maximum voltage the capacitor can withstand; operating at lower voltages does not degrade performance or reliability. This approach provides additional design margin and extended lifetime benefits.