335CKS100M Equivalent & Substitute Parts Reference

Part Overview

The 335CKS100M is a 3.3 µF, 100 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the CKS series. This radial, through-hole component is designed for general-purpose applications with a rated lifetime of 2000 hours at 85°C and an operating temperature range of -40°C to 85°C. The part maintains active product status with 1058 units in current inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across manufacturers while meeting the same application requirements. Alternative components may be selected based on availability, lead time, product lifecycle status, or enhanced performance characteristics within the same parameter envelope.

Key Parameters

Parameter	Value	Unit
Capacitance	3.3	µF
Voltage - Rated	100	V
Tolerance	±20%	-
Polarization	Polar	-
Mounting Type	Through Hole	-
Package / Case	Radial, Can	-
Lead Spacing	0.079" (2.00mm)	-
Size / Dimension	0.197" Dia (5.00mm)	-
Operating Temperature	-40°C ~ 85°C	-
Lifetime @ Temp.	2000 Hrs @ 85°C	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the 335CKS100M is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

Capacitance: 3.3 µF (exact match required)
Voltage Rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)
Lead Spacing: 0.079" (2.00mm) (exact match required)
Size / Dimension: 0.197" Dia (5.00mm) (exact match required)

Acceptable Variation Parameters:

Lifetime @ Temperature: Equal to or greater than 2000 Hrs @ 85°C
Operating Temperature Range: Equal to or wider than -40°C ~ 85°C
ESR (Equivalent Series Resistance): Lower values indicate improved performance
Ripple Current: Equal to or greater than specified values
Product Status: Active or Obsolete (both acceptable for substitution)
Compliance: ROHS3 Compliant, REACH Unaffected (all substitutes meet these requirements)

All identified substitute parts maintain identical electrical and mechanical specifications within the allowed parameter envelope, ensuring direct functional compatibility in circuit applications.

Parameter Comparison

Parameter	335CKS100M (Cornell Dubilier)	ECA-2AM3R3 (Panasonic)	100YXJ3.3M5X11 (Rubycon)	UPM2A3R3MDD (Nichicon)	ESK335M100AC3AA (KEMET)	UVR2A3R3MDD (Nichicon)
Capacitance	3.3 µF	3.3 µF	3.3 µF	3.3 µF	3.3 µF	3.3 µF
Voltage - Rated	100 V	100 V	100 V	100 V	100 V	100 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Polarization	Polar	Polar	Polar	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Size / Dimension	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)	0.197" Dia (5.00mm)
Height - Seated (Max)	0.492" (12.50mm)	0.472" (12.00mm)	0.492" (12.50mm)	0.492" (12.50mm)	0.492" (12.50mm)	0.492" (12.50mm)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Lifetime @ Temp.	2000 Hrs @ 85°C	2000 Hrs @ 85°C	5000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
ESR @ 120Hz	40.191 Ohm	-	-	-	-	-
Ripple Current @ 120 Hz	45 mA	40 mA	16.8 mA	27 mA	45 mA	40 mA
Product Status	Active	Active	Active	Obsolete	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Selection (Active Status):

The ECA-2AM3R3 (Panasonic M-A series) and ESK335M100AC3AA (KEMET ESK series) are recommended as primary substitutes. Both maintain active product status, ensuring long-term availability and consistent manufacturing quality. The ECA-2AM3R3 offers a slightly reduced height of 0.472" (12.00mm) compared to the 335CKS100M at 0.492" (12.50mm), which may provide advantages in space-constrained PCB layouts. The ESK335M100AC3AA maintains identical height and ripple current specifications at 120 Hz (45 mA), providing direct electrical equivalence.

Enhanced Performance Selection:

The 100YXJ3.3M5X11 (Rubycon YXJ series) provides enhanced thermal performance with a 5000-hour lifetime at 105°C, compared to the 2000-hour lifetime at 85°C of the main part. This component extends the operating temperature range to -40°C ~ 105°C and is suitable for applications requiring improved reliability in elevated temperature environments.

Automotive-Qualified Selection:

The UPM2A3R3MDD (Nichicon UPM series) carries AEC-Q200 automotive qualification and operates across an extended temperature range of -55°C ~ 105°C. This part is designated as Obsolete but remains available in inventory (1140 units). Selection of this component is appropriate for automotive applications requiring automotive-grade component certification.

Compatibility Consideration:

The UVR2A3R3MDD (Nichicon UVR series) is designated as Obsolete and should be selected only when existing designs specifically reference this part number or when inventory depletion of active alternatives necessitates transition planning.

Frequently Asked Questions (FAQ)

Q: Can the ECA-2AM3R3 be used as a direct replacement for the 335CKS100M?

A: Yes. The ECA-2AM3R3 maintains identical capacitance (3.3 µF), voltage rating (100 V), tolerance (±20%), polarization (Polar), mounting type (Through Hole), package type (Radial, Can), lead spacing (0.079" / 2.00mm), and size (0.197" Dia / 5.00mm). The reduced height of 0.472" (12.00mm) versus 0.492" (12.50mm) is within acceptable mechanical tolerance for through-hole applications. Both parts are ROHS3 Compliant and REACH Unaffected.

Q: What is the difference between the 100YXJ3.3M5X11 and the 335CKS100M?

A: The 100YXJ3.3M5X11 provides enhanced thermal performance with a 5000-hour lifetime at 105°C compared to the 2000-hour lifetime at 85°C of the 335CKS100M. The operating temperature range extends to 105°C. All other electrical and mechanical parameters remain equivalent. This part is suitable for applications requiring improved reliability in elevated temperature environments.

Q: Are the obsolete parts (UPM2A3R3MDD and UVR2A3R3MDD) acceptable for new designs?

A: Obsolete parts are available in current inventory but are not recommended for new designs due to uncertain future availability. The UPM2A3R3MDD is appropriate for automotive applications requiring AEC-Q200 qualification. For general-purpose applications, active alternatives (ECA-2AM3R3, ESK335M100AC3AA, or 100YXJ3.3M5X11) are preferred.

Q: Does the height difference between ECA-2AM3R3 (12.00mm) and 335CKS100M (12.50mm) affect PCB layout?

A: The 0.5mm height reduction of the ECA-2AM3R3 provides additional clearance in space-constrained applications. This difference does not affect electrical performance or lead spacing compatibility. PCB layouts designed for the 335CKS100M will accommodate the ECA-2AM3R3 without modification.

Q: What ripple current specifications should be considered when selecting a substitute?

A: The 335CKS100M specifies 45 mA ripple current at 120 Hz. Substitute parts must maintain equal or greater ripple current capacity at the same frequency. The ECA-2AM3R3 and UVR2A3R3MDD specify 40 mA at 120 Hz, which is slightly lower. The ESK335M100AC3AA matches the 45 mA specification. The 100YXJ3.3M5X11 specifies 16.8 mA at 120 Hz, which is lower and may require circuit evaluation for high-ripple-current applications.

Q: Are all substitute parts compliant with RoHS3 and REACH regulations?

A: Yes. All identified substitute parts (ECA-2AM3R3, 100YXJ3.3M5X11, UPM2A3R3MDD, ESK335M100AC3AA, and UVR2A3R3MDD) are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the 335CKS100M.

Q: Which substitute part is recommended for automotive applications?

A: The UPM2A3R3MDD (Nichicon UPM series) carries AEC-Q200 automotive qualification and operates across an extended temperature range of -55°C ~ 105°C. This part is designated as Obsolete but remains available in inventory. For new automotive designs, evaluate the 100YXJ3.3M5X11 (Rubycon YXJ series) for enhanced thermal performance, though automotive qualification status is not specified in the provided data.

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