SEK330M160ST Equivalent & Substitute Parts

Part Overview

The SEK330M160ST is a 33 µF 160 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. Equivalent and substitute parts may be required due to supply chain considerations, inventory availability, or application-specific performance requirements such as extended lifetime or enhanced ripple current handling.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage Rating	160 V
Tolerance	±20%
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00mm)
Diameter	0.394" (10.00mm)
Height (Max)	0.827" (21.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SEK330M160ST are organized based on the following electrical and mechanical parameters that determine compatibility:

Core Electrical Parameters:

Capacitance: 33 µF (fixed requirement across all substitutes)
Tolerance: ±20% (maintained across all substitutes)
Operating Temperature Range: -40°C ~ 105°C (maintained across all substitutes)
Polarization: Polar (fixed requirement)

Voltage Rating Variations:

Direct equivalents maintain 160 V rating (UCS2C330MPD)
Upgraded substitutes provide 200 V (EKXG201ELL330MJ20S, UCS2D330MPD) or 250 V (EKXJ251ELL330MJ20S) rating, permitting use in original 160 V applications with margin

Mechanical Parameters:

Package Type: Radial, Can (universal across all substitutes)
Mounting Type: Through Hole (universal across all substitutes)
Lead Spacing: 0.197" (5.00mm) (universal across all substitutes)
Diameter: 0.394" (10.00mm) (universal across all substitutes)
Height: Maximum variations of 0.846" (21.50mm) or 0.787" (20.00mm) are within PCB mounting tolerances

Compliance:

RoHS3 Compliant (universal across all substitutes)
ECCN and HTSUS classifications maintained

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Ripple Current @ 120 Hz	Ripple Current @ 10/100 kHz	Height (Max)	Product Status
SEK330M160ST	Cornell Dubilier Electronics	SEK	33 µF	160 V	±20%	2000 Hrs	180 mA	288 mA @ 10 kHz	0.827" (21.00mm)	Active
UCS2C330MPD	Nichicon	UCS	33 µF	160 V	±20%	8000 Hrs	325 mA	650 mA @ 100 kHz	0.846" (21.50mm)	Active
UCS2D330MPD	Nichicon	UCS	33 µF	200 V	±20%	8000 Hrs	325 mA	650 mA @ 100 kHz	0.846" (21.50mm)	Active
EKXG201ELL330MJ20S	Chemi-Con	KXG	33 µF	200 V	±20%	8000 Hrs	260 mA	650 mA @ 100 kHz	0.787" (20.00mm)	Active
EKXJ251ELL330MJ20S	Chemi-Con	KXJ	33 µF	250 V	±20%	10000 Hrs	240 mA	600 mA @ 100 kHz	0.846" (21.50mm)	Active

Engineering Selection Recommendations

All listed substitute parts are Active product status and ROHS3 Compliant, permitting direct selection as replacements for the SEK330M160ST.

Direct Equivalent (Same Voltage Rating):

UCS2C330MPD: Nichicon UCS series at 160 V rating maintains voltage equivalence while providing 4x extended lifetime (8000 Hrs vs. 2000 Hrs) and enhanced ripple current capability. Mechanical compatibility confirmed.

Voltage-Upgraded Substitutes (Higher Voltage Rating):

UCS2D330MPD: Nichicon UCS series at 200 V rating is suitable for 160 V applications and provides identical extended lifetime and ripple current performance as UCS2C330MPD, with elevated voltage margin.
EKXG201ELL330MJ20S: Chemi-Con KXG series at 200 V rating is suitable for 160 V applications. Height dimension is 0.787" (20.00mm), 0.040" shorter than the main part, confirming mechanical accommodation on standard PCB layouts.
EKXJ251ELL330MJ20S: Chemi-Con KXJ series at 250 V rating is suitable for 160 V applications with maximum voltage margin. This part carries AEC-Q200 automotive qualification and provides 10000 Hrs lifetime at 105°C, the highest among all substitutes.

Frequently Asked Questions (FAQ)

Q: Can I use a 200 V or 250 V rated capacitor in a circuit designed for 160 V? A: Yes. Higher voltage-rated capacitors are suitable for lower voltage applications. The voltage rating indicates the maximum safe operating voltage; using a higher-rated component provides additional safety margin with no functional penalty.

Q: Are all listed substitutes mechanically compatible with the original SEK330M160ST? A: Yes. All substitute parts share identical lead spacing (0.197" / 5.00mm), diameter (0.394" / 10.00mm), and radial through-hole mounting type. Height variations (0.787" to 0.846") are within standard PCB layout tolerances for through-hole radial capacitors.

Q: What is the difference between direct equivalents and upgraded substitutes? A: Direct equivalents (UCS2C330MPD) maintain the 160 V voltage rating. Upgraded substitutes (UCS2D330MPD, EKXG201ELL330MJ20S, EKXJ251ELL330MJ20S) provide higher voltage ratings while maintaining the same capacitance and tolerance. All are functionally interchangeable in the original application.

Q: Which substitute offers the longest operational lifetime? A: EKXJ251ELL330MJ20S provides 10000 Hrs @ 105°C, compared to 2000 Hrs for the original part. UCS2C330MPD and UCS2D330MPD both provide 8000 Hrs @ 105°C.

Q: Do all substitutes meet RoHS compliance? A: Yes. All listed substitute parts are ROHS3 Compliant and REACH Unaffected, maintaining regulatory compliance with the original part.

Q: What ripple current ratings should I consider for substitute selection? A: Ripple current capacity varies among substitutes. The original SEK330M160ST handles 180 mA @ 120 Hz and 288 mA @ 10 kHz. Substitutes range from 240–325 mA @ 120 Hz and 600–650 mA @ 100 kHz. Select based on actual ripple current requirements in your application.

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