ECO-S1CP333EA Equivalent & Substitute Parts

Part Overview

The ECO-S1CP333EA is a 33000 µF, 16 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The component is rated for general purpose applications with a 3000-hour lifetime at 85°C and operates across the temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Capacitance	33000 µF
Voltage Rating	16 V
Tolerance	±20%
ESR @ 120Hz	25 mOhm
Lifetime @ 85°C	3000 Hrs
Operating Temperature	-40°C to 85°C
Lead Spacing	0.394" (10.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution for the ECO-S1CP333EA is determined by strict alignment of the following parameters:

Capacitance: 33000 µF (exact match required)
Voltage Rating: 16 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Operating Temperature Range: -40°C to 85°C (exact match required)
Lifetime @ 85°C: 3000 Hrs (exact match required)

Parts are classified as direct equivalents when all parameters match. Parts with identical electrical and mechanical specifications but different physical dimensions (diameter and height) are classified as similar substitutes, as they maintain functional equivalence while requiring PCB layout verification. Parametric equivalents meet all electrical specifications but may have minor variations in ripple current performance or ESR characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120Hz	Lifetime @ 85°C	Size Dia (mm)	Height (mm)	Product Status
ECO-S1CP333EA	Panasonic	33000 µF	16 V	±20%	25 mOhm	3000 Hrs	35.00	32.00	Obsolete
16USG33000MEFCSN35X30	Rubycon	33000 µF	16 V	±20%	—	3000 Hrs	35.00	32.00	Active
SLPX333M016H3P3	Cornell Dubilier Electronics	33000 µF	16 V	±20%	20 mOhm	3000 Hrs	35.00	30.00	Active
380LX333M016J052	Cornell Dubilier Electronics	33000 µF	16 V	±20%	25 mOhm	3000 Hrs	25.00	52.00	Active
380LX333M016K042	Cornell Dubilier Electronics	33000 µF	16 V	±20%	25 mOhm	3000 Hrs	30.00	42.00	Active
B41231B4339M000	EPCOS - TDK Electronics	33000 µF	16 V	±20%	—	2000 Hrs	35.00	32.00	Active
SLPX333M016C9P3	Cornell Dubilier Electronics	33000 µF	16 V	±20%	20 mOhm	3000 Hrs	25.00	50.00	Active
SLPX333M016E7P3	Cornell Dubilier Electronics	33000 µF	16 V	±20%	20 mOhm	3000 Hrs	30.00	40.00	Active
339LBB016M2ED	Cornell Dubilier / Illinois Capacitor	33000 µF	16 V	±20%	25.12 mOhm	3000 Hrs	35.00	32.00	Active
380LX333M016A022	Cornell Dubilier Electronics	33000 µF	16 V	±20%	25 mOhm	3000 Hrs	35.00	32.00	Active
LLS1C333MELC	Nichicon	33000 µF	16 V	±20%	—	3000 Hrs	35.00	32.00	Active

Engineering Selection Recommendations

Direct equivalents with identical physical dimensions (35.00 mm diameter, 32.00 mm height) are preferred for drop-in replacement without PCB modification:

16USG33000MEFCSN35X30 (Rubycon USG series) - Active status, identical footprint
339LBB016M2ED (Cornell Dubilier / Illinois Capacitor LBB series) - Active status, identical footprint, ROHS3 compliant
380LX333M016A022 (Cornell Dubilier 380LX series) - Active status, identical footprint, ROHS3 compliant
LLS1C333MELC (Nichicon LLS series) - Active status, identical footprint, ROHS3 compliant

The part B41231B4339M000 (EPCOS - TDK Electronics) maintains identical physical dimensions but specifies a reduced lifetime of 2000 hours at 85°C compared to the 3000-hour specification of the main part and other substitutes.

Similar substitutes with different physical dimensions require PCB layout verification but maintain full electrical equivalence:

SLPX333M016H3P3 (Cornell Dubilier SLPX series, 35.00 mm diameter, 30.00 mm height) - Lower ESR at 20 mOhm
SLPX333M016C9P3 (Cornell Dubilier SLPX series, 25.00 mm diameter, 50.00 mm height) - Lower ESR at 20 mOhm
SLPX333M016E7P3 (Cornell Dubilier SLPX series, 30.00 mm diameter, 40.00 mm height) - Lower ESR at 20 mOhm
380LX333M016J052 (Cornell Dubilier 380LX series, 25.00 mm diameter, 52.00 mm height)
380LX333M016K042 (Cornell Dubilier 380LX series, 30.00 mm diameter, 42.00 mm height)

All active substitutes carry ROHS3 compliance and are classified as REACH Unaffected or REACH Affected, consistent with the original part designation.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different physical dimensions?

A: Yes, similar substitutes with different diameters and heights maintain full electrical equivalence. However, PCB layout must be verified to confirm the new dimensions fit within available board space and do not interfere with adjacent components or mounting structures.

Q: What is the difference between direct equivalents and similar substitutes?

A: Direct equivalents share identical physical dimensions (35.00 mm diameter, 32.00 mm height) with the ECO-S1CP333EA and can be used as drop-in replacements without PCB modification. Similar substitutes meet all electrical specifications but have different physical dimensions, requiring layout verification before implementation.

Q: Does ESR variation affect circuit performance?

A: ESR is provided in the specification data. Parts with lower ESR (20 mOhm) compared to the original (25 mOhm) will exhibit improved performance characteristics. Parts with ESR data not specified in the provided information should be cross-referenced with manufacturer datasheets for complete electrical characterization.

Q: Why is the B41231B4339M000 listed if it has a shorter lifetime?

A: The B41231B4339M000 meets all other electrical and mechanical specifications but specifies 2000 hours at 85°C versus the 3000-hour requirement of the original part. This part is included for reference but should only be selected if the application permits reduced lifetime specifications.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed carry ROHS3 compliance certification. The original ECO-S1CP333EA does not specify RoHS status in the provided data.

Q: What is the significance of lead spacing in substitution?

A: Lead spacing of 0.394" (10.00 mm) is maintained across all substitute parts and the original component. This ensures compatibility with existing PCB through-hole patterns and mounting hardware.

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