ECO-S1CP183CA Equivalent & Substitute Parts

Part Overview

The Panasonic ECO-S1CP183CA is an 18000 µF, 16 V aluminum electrolytic capacitor in radial, can snap-in package configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and procurement planning. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 3000 hours at 85°C, serving general-purpose applications requiring high-capacitance energy storage.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution eligibility for the ECO-S1CP183CA is determined by strict equivalence across the following parameters: capacitance value (18000 µF), voltage rating (16 V), tolerance (±20%), polarization (polar), package type (radial, can snap-in), mounting type (through hole), and lead spacing (10.00 mm). All identified substitute parts maintain these core electrical and mechanical specifications. Variations in ESR, ripple current ratings, physical dimensions (diameter and height), and product status are documented but do not disqualify substitution when core parameters align.

Parameter Comparison

Parameter	ECO-S1CP183CA (Panasonic)	380LX183M016J022 (CDE)	380LX183M016H042 (CDE)	SLPX183M016A7P3 (CDE)	SLPX183M016C5P3 (CDE)	SLPX183M016E3P3 (CDE)
Capacitance	18000 µF	18000 µF	18000 µF	18000 µF	18000 µF	18000 µF
Voltage Rating	16 V	16 V	16 V	16 V	16 V	16 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
ESR @ 120Hz	46 mOhm	45 mOhm	45 mOhm	37 mOhm	37 mOhm	37 mOhm
Lifetime @ 85°C	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Lead Spacing	10.00 mm	10.00 mm	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Polarization	Polar	Polar	Polar	Polar	Polar	Polar
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All five substitute parts maintain electrical and mechanical equivalence to the ECO-S1CP183CA across core parameters. The primary distinction is product status: the original Panasonic part is obsolete, while all Cornell Dubilier Electronics (CDE) alternatives are active production items. All CDE substitutes carry ROHS3 compliance certification, supporting regulatory requirements for new designs and procurement cycles.

The 380LX series parts (380LX183M016J022 and 380LX183M016H042) offer ESR values of 45 mOhm, marginally lower than the original 46 mOhm specification. The SLPX series parts (SLPX183M016A7P3, SLPX183M016C5P3, and SLPX183M016E3P3) provide further ESR reduction to 37 mOhm, representing improved performance characteristics. Physical dimensions vary across the substitute set; dimensional compatibility with existing PCB layouts and mechanical enclosures must be verified during integration.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts directly replace the ECO-S1CP183CA without circuit modification?

A: Yes. All substitute parts maintain identical capacitance (18000 µF), voltage rating (16 V), tolerance (±20%), lead spacing (10.00 mm), and package configuration (radial, can snap-in). Direct electrical substitution is supported. Physical fit verification is required to confirm compatibility with existing PCB footprints and mechanical mounting constraints.

Q: What is the significance of the ESR differences between the original and substitute parts?

A: The original ECO-S1CP183CA specifies 46 mOhm ESR at 120 Hz. The 380LX series substitutes provide 45 mOhm, while the SLPX series provides 37 mOhm. Lower ESR values reduce heat dissipation and improve ripple current handling capability. These differences do not prevent substitution but may improve circuit performance in applications sensitive to impedance characteristics.

Q: Are there physical dimension differences that affect PCB layout?

A: Yes. The original part specifies 0.984" diameter (25.00 mm) and 1.260" height (32.00 mm). Substitute parts vary: 380LX183M016H042 uses 0.866" diameter (22.00 mm) and 1.654" height (42.00 mm); SLPX183M016A7P3 uses 0.866" diameter (22.00 mm) and 1.575" height (40.00 mm); SLPX183M016C5P3 uses 0.984" diameter (25.00 mm) and 1.378" height (35.00 mm); SLPX183M016E3P3 uses 1.181" diameter (30.00 mm) and 1.181" height (30.00 mm). Verify mechanical clearance before selection.

Q: What is the difference between the 380LX and SLPX series?

A: Both are Cornell Dubilier Electronics products meeting the core electrical specifications. The 380LX series maintains ESR closer to the original specification (45 mOhm), while the SLPX series achieves lower ESR (37 mOhm). The SLPX series is available in bulk packaging, whereas 380LX series packaging details are not specified in the provided data.

Q: Why is the original part listed as obsolete?

A: The ECO-S1CP183CA is classified as obsolete by Panasonic, indicating discontinued production. Active substitute parts from Cornell Dubilier Electronics ensure continued availability for system maintenance, repair, and new procurement cycles.

Q: Are all substitute parts RoHS compliant?

A: Yes. All five substitute parts carry ROHS3 compliance certification, meeting regulatory requirements for electronic component procurement in regulated markets.

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