ECO-S1CA123BA Equivalent & Substitute Parts

Part Overview

The ECO-S1CA123BA is a 12000 µF, 16 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 3000 hours at 105°C, serving general-purpose applications requiring high-capacitance energy storage in compact form factors.

Key Parameters

Parameter	Value
Capacitance	12000 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Operating Temperature	-40°C to 105°C
Lifetime @ 105°C	3000 Hours
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria (Direct Equivalents):

Capacitance: 12000 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)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Secondary Consideration (Operational Enhancement):

Lifetime @ 105°C: Parts with 3000 hours or greater are acceptable; parts with 5000 hours represent operational enhancement

Dimensional Tolerance:

Height variation within physical constraints of snap-in package design is permissible provided all other parameters match

Parts are categorized as Direct Manufacturer Equivalents, Upgrades, or Similar variants based on adherence to these criteria.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Height (Max)	Product Status	RoHS Status
ECO-S1CA123BA	Panasonic	12000 µF	16 V	±20%	3000 Hrs	0.394" (10.00 mm)	1.457" (37.00 mm)	Obsolete	REACH Affected
16MXG12000MEFCSN22X30	Rubycon	12000 µF	16 V	±20%	3000 Hrs	0.394" (10.00 mm)	1.260" (32.00 mm)	Active	ROHS3 Compliant
SLP123M016A5P3	Cornell Dubilier Electronics (CDE)	12000 µF	16 V	±20%	3000 Hrs	0.394" (10.00 mm)	1.378" (35.00 mm)	Active	ROHS3 Compliant
LGY1C123MELZ35	Nichicon	12000 µF	16 V	±20%	5000 Hrs	0.394" (10.00 mm)	1.457" (37.00 mm)	Active	ROHS3 Compliant
381LX123M016J022	Cornell Dubilier Electronics (CDE)	12000 µF	16 V	±20%	3000 Hrs	0.394" (10.00 mm)	1.260" (32.00 mm)	Active	ROHS3 Compliant
381LX123M016K012	Cornell Dubilier Electronics (CDE)	12000 µF	16 V	±20%	3000 Hrs	0.394" (10.00 mm)	1.063" (27.00 mm)	Active	ROHS3 Compliant
B41252A4129M	EPCOS - TDK Electronics	12000 µF	16 V	±20%	2000 Hrs	0.394" (10.00 mm)	1.457" (37.00 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

16MXG12000MEFCSN22X30 (Rubycon MXG Series) and SLP123M016A5P3 (Cornell Dubilier SLP Series) are direct electrical equivalents meeting all primary substitution criteria. Both are active products with ROHS3 compliance. The Rubycon part features reduced height (32.00 mm vs. 37.00 mm original), beneficial for space-constrained applications. The CDE part maintains intermediate height (35.00 mm).

Upgrade Option:

LGY1C123MELZ35 (Nichicon LGY Series) provides operational enhancement with extended lifetime of 5000 hours at 105°C versus the original 3000 hours. This part is ROHS3 compliant and active. Height matches the original specification at 37.00 mm.

Alternative Equivalents:

381LX123M016J022 and 381LX123M016K012 (Cornell Dubilier 381LX Series) meet all electrical requirements with active product status and ROHS3 compliance. The 381LX123M016K012 variant offers the most compact height at 27.00 mm, suitable for applications with vertical space constraints.

Lower-Tier Alternative:

B41252A4129M (EPCOS - TDK Electronics B41252 Series) meets electrical specifications but features reduced lifetime of 2000 hours at 105°C. Selection of this part is appropriate only when extended operational life is not a system requirement.

Frequently Asked Questions (FAQ)

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

A: Yes. All listed substitutes maintain the required 0.394" (10.00 mm) lead spacing and snap-in package configuration. Height variation is permissible provided the component fits within the physical envelope of your PCB layout and enclosure. Verify clearance above the capacitor before final design approval.

Q: What is the difference between direct equivalents and upgrade parts?

A: Direct equivalents (16MXG12000MEFCSN22X30, SLP123M016A5P3, 381LX123M016J022, 381LX123M016K012) match all electrical and mechanical specifications including 3000-hour lifetime. The upgrade part (LGY1C123MELZ35) provides extended 5000-hour lifetime at 105°C, enhancing system reliability in high-temperature applications without changing electrical performance.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed are ROHS3 compliant. The original ECO-S1CA123BA is marked as REACH Affected; all substitutes are REACH Unaffected, providing regulatory advantage for new designs and ongoing production.

Q: Can I substitute a 12000 µF capacitor rated at 10 V or 25 V?

A: No. Voltage rating is a primary substitution criterion. The original part is rated 16 V. Using a lower voltage rating (10 V) creates electrical stress and reliability risk. Using a higher voltage rating (25 V) is physically incompatible due to dimensional changes in the snap-in package. Only 16 V rated parts are acceptable substitutes.

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

A: ESR affects ripple current handling and thermal performance. The original part specifies 55 mOhm @ 120 Hz. Substitute parts with unspecified ESR are acceptable provided all other electrical parameters match. If ESR specification is critical to your application, verify with the manufacturer before final selection.

Q: Which substitute offers the best value for new designs?

A: Selection depends on application requirements. For standard applications, 16MXG12000MEFCSN22X30 or SLP123M016A5P3 provide cost-effective direct equivalence. For applications requiring extended operational life, LGY1C123MELZ35 justifies the upgrade cost through 5000-hour lifetime at 105°C. For space-constrained designs, 381LX123M016K012 offers the most compact height at 27.00 mm.

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