ECO-S1CP183BA Equivalent & Substitute Parts

Part Overview

The ECO-S1CP183BA is an 18000 µF, 16 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-UP series. This radial, can-type snap-in capacitor is rated for 3000 hours at 85°C with an ESR of 46 mOhm @ 120 Hz and is designed for general-purpose applications. The part is currently obsolete, making equivalent and substitute components necessary for ongoing system support and new designs requiring this capacitance and voltage specification.

Key Parameters

Parameter	Value
Capacitance	18000 µF
Voltage Rating	16 V
Tolerance	±20%
ESR @ 120 Hz	46 mOhm
Lifetime @ 85°C	3000 Hrs
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.866" (22.00 mm)
Height	1.654" (42.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the ECO-S1CP183BA is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 18000 µF
Voltage Rating: 16 V
Tolerance: ±20%
Operating Temperature Range: -40°C ~ 85°C
Polarization: Polar
Package Type: Radial, Can - Snap-In
Mounting Type: Through Hole
Lead Spacing: 0.394" (10.00 mm)

Allowable Variations:

ESR @ 120 Hz: Substitute parts may have lower ESR values (37 mOhm to 46 mOhm range acceptable)
Lifetime @ 85°C: Substitute parts rated for 2000 Hrs or higher are acceptable
Case Diameter: Substitute parts with case diameters from 0.866" to 1.181" (22.00 mm to 30.00 mm) are acceptable
Height: Substitute parts with heights from 1.181" to 1.654" (30.00 mm to 42.00 mm) are acceptable
Ripple Current: Variations acceptable within design margin

Substitute parts are grouped as Direct Equivalents (identical electrical and mechanical specifications), Similar Equivalents (minor dimensional variations within allowable range), and Parametric Equivalents (electrical performance variations within acceptable limits).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	ESR @ 120 Hz	Lifetime @ 85°C	Case Dia (mm)	Height (mm)	Product Status
ECO-S1CP183BA	Panasonic	TS-UP	18000 µF	16 V	46 mOhm	3000 Hrs	22.00	42.00	Obsolete
SLPX183M016A7P3	Cornell Dubilier Electronics	SLPX	18000 µF	16 V	37 mOhm	3000 Hrs	22.00	40.00	Active
380LX183M016H042	Cornell Dubilier Electronics	380LX	18000 µF	16 V	45 mOhm	3000 Hrs	22.00	42.00	Active
B41231A4189M000	EPCOS - TDK Electronics	B41231	18000 µF	16 V	—	2000 Hrs	22.00	42.00	Active
SLPX183M016C5P3	Cornell Dubilier Electronics	SLPX	18000 µF	16 V	37 mOhm	3000 Hrs	25.00	35.00	Active
SLPX183M016E3P3	Cornell Dubilier Electronics	SLPX	18000 µF	16 V	37 mOhm	3000 Hrs	30.00	30.00	Active
380LX183M016J022	Cornell Dubilier Electronics	380LX	18000 µF	16 V	45 mOhm	3000 Hrs	25.00	32.00	Active
LLS1C183MELZ	Nichicon	LLS	18000 µF	16 V	—	3000 Hrs	22.00	42.00	Active

Engineering Selection Recommendations

Direct Equivalent (Preferred for Direct Replacement):

380LX183M016H042 (Cornell Dubilier Electronics): Matches original dimensions (22.00 mm diameter, 42.00 mm height) with ESR of 45 mOhm and 3000-hour lifetime. ROHS3 compliant and active product status ensure long-term availability.

Electrical Performance Equivalent (Lower ESR):

SLPX183M016A7P3 (Cornell Dubilier Electronics): Provides superior ESR performance at 37 mOhm with identical 3000-hour lifetime. Dimensions vary slightly (22.00 mm diameter, 40.00 mm height). ROHS3 compliant and active status.

Dimensional Alternatives (Compact Form Factors):

SLPX183M016C5P3 (Cornell Dubilier Electronics): Reduced height (35.00 mm) and increased diameter (25.00 mm) with 37 mOhm ESR and 3000-hour lifetime. Suitable for space-constrained applications with modified PCB layout.
SLPX183M016E3P3 (Cornell Dubilier Electronics): Compact square form (30.00 mm × 30.00 mm) with 37 mOhm ESR and 3000-hour lifetime. Requires significant PCB redesign.

Extended Availability Option:

LLS1C183MELZ (Nichicon): Matches original dimensions (22.00 mm diameter, 42.00 mm height) with 3000-hour lifetime. ROHS3 compliant and active status. ESR data not provided; verify performance requirements before selection.

Cost-Optimized Alternative (Reduced Lifetime):

B41231A4189M000 (EPCOS - TDK Electronics): Matches original dimensions with 2000-hour lifetime at 85°C (1000 hours less than original specification). ROHS3 compliant and active status. Suitable only for applications with reduced thermal stress or shorter service life requirements.

All substitute parts maintain the required 18000 µF capacitance, 16 V voltage rating, ±20% tolerance, -40°C to 85°C operating range, and through-hole snap-in package configuration.

Frequently Asked Questions (FAQ)

Q: Can SLPX183M016A7P3 be used as a direct replacement for ECO-S1CP183BA? A: SLPX183M016A7P3 is electrically compatible with superior ESR performance (37 mOhm vs. 46 mOhm). Height differs by 2.00 mm (40.00 mm vs. 42.00 mm), which is acceptable for most through-hole applications. Verify PCB clearance and mechanical constraints before installation.

Q: What is the difference between the 380LX series and SLPX series substitutes? A: Both series maintain identical electrical specifications (18000 µF, 16 V, 3000-hour lifetime). The 380LX series offers ESR of 45 mOhm, closely matching the original 46 mOhm specification. The SLPX series provides lower ESR at 37 mOhm, reducing heat generation. Selection depends on thermal design requirements.

Q: Are dimensional variations acceptable for PCB-mounted applications? A: Dimensional variations are acceptable only if PCB layout accommodates the new form factor. Case diameter increases from 22.00 mm to 25.00 mm or 30.00 mm require modified mounting holes and clearance verification. Height variations of ±2.00 mm are typically acceptable for standard through-hole designs.

Q: Why does B41231A4189M000 have a shorter lifetime specification? A: B41231A4189M000 is rated for 2000 hours at 85°C versus the original 3000 hours. This part is suitable only for applications with reduced thermal stress or where the shorter service life meets design requirements. Verify thermal operating conditions before selection.

Q: What compliance certifications apply to all substitute parts? A: All active substitute parts listed are ROHS3 compliant. REACH compliance status varies: Cornell Dubilier Electronics (SLPX and 380LX series) are REACH Unaffected; EPCOS and Nichicon parts are REACH Unaffected. All parts carry EAR99 export classification and HTSUS code 8532.22.0040.

Q: Can substitute parts with different case diameters be used in existing designs? A: Substitute parts with different case diameters require PCB redesign. SLPX183M016C5P3 (25.00 mm diameter) and SLPX183M016E3P3 (30.00 mm diameter) are not suitable for direct PCB mounting without layout modification. Evaluate mechanical constraints and redesign feasibility before selection.

Q: Which substitute offers the best thermal performance? A: SLPX183M016A7P3, SLPX183M016C5P3, and SLPX183M016E3P3 all provide 37 mOhm ESR, the lowest among available substitutes. Lower ESR reduces heat generation and improves ripple current handling. Select based on dimensional compatibility with your PCB layout.

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