337CKS010M Equivalent & Substitute Parts Reference

Part Overview

The 337CKS010M is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active status and serves general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part features a 2000-hour lifetime rating at 85°C with an ESR of 1.005 Ohm @ 120 Hz, making it suitable for power supply filtering, energy storage, and signal coupling applications. Equivalent and substitute parts are necessary when the original part becomes unavailable, when design requirements demand enhanced performance characteristics such as extended lifetime or higher ripple current handling, or when alternative manufacturers' components offer superior reliability margins for critical applications.

Key Parameters

Parameter	337CKS010M Value	Substitution Relevance
Capacitance	330 µF	Critical - must match exactly
Voltage Rating	10 V	Critical - minimum acceptable rating
Tolerance	±20%	Critical - must match or be tighter
Operating Temperature Range	-40°C ~ 85°C	Critical - minimum acceptable range
Lifetime @ Temperature	2000 Hrs @ 85°C	Important - higher ratings acceptable
ESR @ 120 Hz	1.005 Ohm	Important - lower values acceptable
Ripple Current @ 120 Hz	325 mA	Important - equal or higher acceptable
Lead Spacing	0.098" (2.50 mm)	Critical - must match for PCB compatibility
Package Type	Radial, Can	Critical - must match
Mounting Type	Through Hole	Critical - must match
RoHS Status	ROHS3 Compliant	Important - regulatory requirement

Substitute Part Grouping Explanation

Substitution logic for the 337CKS010M is based on strict electrical and mechanical compatibility criteria. All substitute parts must maintain the following parameters:

Critical Matching Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% or tighter
Lead Spacing: 0.098" (2.50 mm)
Package Type: Radial, Can
Mounting Type: Through Hole
Polarization: Polar

Acceptable Variation Parameters:

Voltage Rating: 10 V minimum (higher ratings are acceptable as they provide backward compatibility)
Operating Temperature Range: Must encompass -40°C to 85°C minimum (extended ranges acceptable)
Lifetime @ Temperature: 2000 Hrs @ 85°C minimum (extended lifetimes acceptable)
ESR: Lower values acceptable (1.005 Ohm or below)
Ripple Current: 325 mA @ 120 Hz minimum (higher values acceptable)

Substitute parts are categorized as Direct Equivalents (matching all primary specifications), Upgrades (enhanced performance characteristics), or Parametric Equivalents (same electrical function with minor specification variations). All listed substitutes maintain RoHS3 compliance and REACH Unaffected status consistent with the main part.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	ESR @ 120Hz	Ripple Current @ 120Hz	Lead Spacing	Height (Max)	Product Status
337CKS010M	Cornell Dubilier / Illinois Capacitor	330 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	1.005 Ohm	325 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
ECA-1AM331	Panasonic Electronic Components	330 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	—	330 mA	0.098" (2.50 mm)	0.480" (12.20 mm)	Active
UVR1A331MED	Nichicon	330 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	—	290 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Obsolete
10ZLH330MEFC6.3X11	Rubycon	330 µF	10 V	±20%	6000 Hrs @ 105°C	-40°C ~ 105°C	—	297 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
10ZLJ330M6.3X11	Rubycon	330 µF	10 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	—	385 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
EKZN100ELL331MF11D	Chemi-Con	330 µF	10 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	—	350 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
16PK330MEFC6.3X11	Rubycon	330 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	—	360 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
16YXJ330M6.3X11	Rubycon	330 µF	16 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	—	280 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
16ZLQ330MEFC6.3X11	Rubycon	330 µF	16 V	±20%	3000 Hrs @ 105°C	-40°C ~ 105°C	—	341 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Active
UVK1C331MED	Nichicon	330 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	—	320 mA	0.098" (2.50 mm)	0.492" (12.50 mm)	Obsolete

Engineering Selection Recommendations

Direct Equivalent Selection (10 V Rated):

ECA-1AM331 (Panasonic) is the primary direct equivalent for 337CKS010M. Both parts share identical electrical specifications: 330 µF capacitance, 10 V voltage rating, ±20% tolerance, 2000-hour lifetime at 85°C, and -40°C to 85°C operating range. ECA-1AM331 maintains Active product status and ROHS3 compliance. The part offers slightly higher ripple current capability (330 mA vs. 325 mA @ 120 Hz) and marginally lower seated height (12.20 mm vs. 12.50 mm), both favorable characteristics. This part is recommended for direct replacement in applications where the original specification is sufficient.

Upgrade Selection (10 V Rated, Enhanced Performance):

10ZLJ330M6.3X11 (Rubycon) and EKZN100ELL331MF11D (Chemi-Con) are upgrade options for 10 V applications. Both parts extend lifetime to 7000 hours at 105°C (compared to 2000 hours at 85°C for the main part) and expand operating temperature range to -40°C to 105°C. These upgrades provide superior reliability margins for applications subject to elevated ambient temperatures or requiring extended service life. 10ZLJ330M6.3X11 offers the highest ripple current capability at 385 mA @ 120 Hz. EKZN100ELL331MF11D provides 350 mA ripple current. Both maintain Active status and full regulatory compliance.

Higher Voltage Rating Selection (16 V Rated):

16PK330MEFC6.3X11, 16YXJ330M6.3X11, and 16ZLQ330MEFC6.3X11 (all Rubycon) are acceptable substitutes where circuit design permits 16 V rated components. These parts provide voltage margin above the 10 V requirement, enhancing circuit reliability. 16PK330MEFC6.3X11 matches the 2000-hour/85°C lifetime specification. 16YXJ330M6.3X11 and 16ZLQ330MEFC6.3X11 offer extended lifetime ratings (7000 and 3000 hours respectively at 105°C). All three maintain Active status and ROHS3 compliance. Selection among these depends on ripple current requirements and thermal environment.

Obsolete Part Handling:

UVR1A331MED (Nichicon) and UVK1C331MED (Nichicon) are marked Obsolete. While inventory remains available, these parts should not be selected for new designs. Existing applications using these parts may continue with current stock, but transition to Active alternatives is recommended for long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can I substitute 337CKS010M with a 16 V rated capacitor?

A: Yes. A 16 V rated capacitor is electrically compatible with a 10 V application. The higher voltage rating provides additional safety margin and does not degrade circuit performance. All 16 V substitute options listed (16PK330MEFC6.3X11, 16YXJ330M6.3X11, 16ZLQ330MEFC6.3X11) are mechanically and electrically compatible with the original 10 V design.

Q: What is the difference between Direct Equivalents and Upgrades?

A: Direct Equivalents (ECA-1AM331, UVR1A331MED) match all primary specifications of the 337CKS010M, including 2000-hour lifetime at 85°C. Upgrades (10ZLH330MEFC6.3X11, 10ZLJ330M6.3X11, EKZN100ELL331MF11D) extend lifetime to 6000-7000 hours at 105°C and expand operating temperature range to 105°C maximum. Upgrades provide enhanced reliability but are not required for applications meeting the original 2000-hour/85°C specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 Compliant status and REACH Unaffected designation, matching the regulatory compliance of the 337CKS010M.

Q: Does the slight height difference between ECA-1AM331 (12.20 mm) and 337CKS010M (12.50 mm) affect PCB compatibility?

A: No. The 0.30 mm height difference is within typical PCB design tolerances and does not affect mechanical fit or electrical performance. Both parts maintain identical lead spacing (0.098" / 2.50 mm) and radial can package configuration.

Q: Can I use an Obsolete part (UVR1A331MED or UVK1C331MED) in a new design?

A: Obsolete parts should not be used in new designs due to supply uncertainty and potential discontinuation. These parts are listed for reference only when servicing existing equipment. For new designs, select from Active status alternatives: ECA-1AM331 for direct equivalence or 10ZLJ330M6.3X11 / EKZN100ELL331MF11D for enhanced performance.

Q: Which substitute offers the best ripple current performance?

A: 10ZLJ330M6.3X11 (Rubycon) provides the highest ripple current at 385 mA @ 120 Hz, exceeding the original 325 mA specification by 18%. This part is optimal for applications with high AC ripple current requirements or thermal stress conditions.

Q: Are there any mechanical dimension differences I should consider?

A: All substitute parts maintain the critical dimensions: 0.248" diameter (6.30 mm) and 0.098" lead spacing (2.50 mm). Seated height varies slightly between 12.20 mm and 12.50 mm, which is negligible for PCB layout. Verify final assembly clearance if space constraints exist.

Q: What is the significance of ESR (Equivalent Series Resistance)?

A: ESR affects capacitor performance in high-frequency applications and thermal stability. The 337CKS010M specifies 1.005 Ohm @ 120 Hz. Substitute parts with lower ESR values provide improved high-frequency filtering and reduced heat generation. When ESR data is unavailable for substitutes, impedance values (measured in mOhms) provide equivalent performance indication.

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