SEK101M160ST Equivalent & Substitute Parts

Part Overview

The SEK101M160ST is a 100 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. 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 necessary when the original manufacturer's stock is unavailable, when design requirements demand extended operational lifetime, or when higher voltage ratings are required for circuit margin enhancement.

Key Parameters

Parameter	Value
Capacitance	100 µF
Tolerance	±20%
Voltage - Rated	160 V
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.197" (5.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SEK101M160ST is determined by strict equivalence in the following critical parameters: capacitance value (100 µF), tolerance (±20%), voltage rating (160 V minimum), polarization (Polar), mounting type (Through Hole), package type (Radial, Can), and lead spacing (0.197" / 5.00mm). All substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct compatibility in circuit applications.

Substitute parts are grouped into two categories:

Direct Equivalents (Same Voltage Rating): Parts maintaining the 160 V voltage rating provide one-to-one functional replacement with identical electrical stress conditions.

Upgraded Equivalents (Higher Voltage Rating): Parts rated at 200 V provide enhanced voltage margin while maintaining all other critical parameters. These parts are suitable for applications where increased design margin is beneficial.

Parameter Comparison

Parameter	SEK101M160ST (CDE)	EKXG161ELL101MK25S (Chemi-Con)	EKXJ201ELL101MK25S (Chemi-Con)	UCS2C101MHD (Nichicon)	UCY2D101MHD (Nichicon)
Manufacturer	Cornell Dubilier Electronics	Chemi-Con	Chemi-Con	Nichicon	Nichicon
Series	SEK	KXG	KXJ	UCS	UCY
Capacitance	100 µF	100 µF	100 µF	100 µF	100 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	160 V	160 V	200 V	160 V	200 V
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lifetime @ Temp.	2000 Hrs @ 105°C	10000 Hrs @ 105°C	12000 Hrs @ 105°C	10000 Hrs @ 105°C	12000 Hrs @ 105°C
Polarization	Polar	Polar	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size / Dimension	0.512" Dia (13.00mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)
Height - Seated (Max)	1.024" (26.00mm)	0.984" (25.00mm)	1.043" (26.50mm)	1.043" (26.50mm)	1.043" (26.50mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are Active product status components, ensuring continued manufacturer support and availability. All parts maintain ROHS3 compliance, satisfying environmental and regulatory requirements.

For Direct Replacement (Same Voltage Rating):

EKXG161ELL101MK25S (Chemi-Con KXG series) and UCS2C101MHD (Nichicon UCS series) are direct electrical equivalents at 160 V rating. Both parts provide extended lifetime (10000 hours at 105°C) compared to the original SEK101M160ST (2000 hours at 105°C). These parts are suitable for applications where the original component's stock is depleted and equivalent voltage performance is required.

For Upgraded Performance (Higher Voltage Rating):

EKXJ201ELL101MK25S (Chemi-Con KXJ series) and UCY2D101MHD (Nichicon UCY series) are rated at 200 V, providing 40 V additional voltage margin above the original 160 V specification. Both parts offer extended lifetime (12000 hours at 105°C). The EKXJ201ELL101MK25S carries AEC-Q200 automotive qualification. These parts are suitable for applications requiring enhanced voltage margin or automotive-grade reliability.

Physical dimensions vary slightly across substitute parts. The original SEK101M160ST has a larger diameter (0.512" / 13.00mm) compared to substitute parts (0.492" / 12.50mm). Height variations range from 0.984" to 1.043". PCB layout verification is necessary to confirm physical fit within the available mounting space.

Frequently Asked Questions (FAQ)

Q: Can EKXG161ELL101MK25S directly replace SEK101M160ST?

A: Yes. Both parts share identical capacitance (100 µF), tolerance (±20%), voltage rating (160 V), operating temperature range (-40°C to 105°C), polarization (Polar), mounting type (Through Hole), package type (Radial, Can), and lead spacing (0.197" / 5.00mm). The EKXG161ELL101MK25S provides extended lifetime (10000 hours at 105°C versus 2000 hours). Physical dimensions differ slightly; verify PCB layout clearance.

Q: What is the difference between 160 V and 200 V rated parts?

A: The 200 V rated parts (EKXJ201ELL101MK25S and UCY2D101MHD) provide 40 V additional voltage margin. All other electrical parameters remain equivalent. These parts are suitable for applications where increased design margin is required or where circuit voltage stress conditions benefit from higher rated voltage.

Q: Are the substitute parts physically interchangeable?

A: All substitute parts maintain the same lead spacing (0.197" / 5.00mm) and mounting type (Through Hole, Radial, Can). However, diameter and height dimensions vary. The original SEK101M160ST has a diameter of 0.512" (13.00mm) and height of 1.024" (26.00mm). Substitute parts have diameters of 0.492" (12.50mm) and heights ranging from 0.984" to 1.043" (25.00mm to 26.50mm). PCB layout verification is required to confirm physical fit.

Q: Which substitute part offers the longest operational lifetime?

A: EKXJ201ELL101MK25S and UCY2D101MHD both provide 12000 hours lifetime at 105°C, compared to 2000 hours for the original SEK101M160ST and 10000 hours for EKXG161ELL101MK25S and UCS2C101MHD.

Q: Is AEC-Q200 qualification important for my application?

A: AEC-Q200 qualification is specific to automotive applications. EKXJ201ELL101MK25S carries this qualification. For non-automotive applications, this certification is not a requirement. All parts listed are ROHS3 compliant and suitable for general purpose applications.

Q: What is the ripple current capability of substitute parts?

A: Ripple current specifications vary across substitute parts. EKXG161ELL101MK25S provides 620 mA at 120 Hz and 1.395 A at 100 kHz. UCS2C101MHD provides 710 mA at 120 Hz and 1.42 A at 100 kHz. EKXJ201ELL101MK25S provides 625 mA at 120 Hz and 1.40625 A at 100 kHz. UCY2D101MHD provides 695 mA at 120 Hz and 1.39 A at 100 kHz. The original SEK101M160ST provides 330 mA at 120 Hz and 528 mA at 10 kHz. Verify ripple current requirements for your specific application.

Q: Are all substitute parts REACH compliant?

A: EKXG161ELL101MK25S, EKXJ201ELL101MK25S, and UCS2C101MHD are REACH Unaffected. UCY2D101MHD is REACH Affected. Verify REACH compliance requirements for your application and supply chain.

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