ECO-S1EP103BA Equivalent & Substitute Parts

Part Overview

The ECO-S1EP103BA is a 10000 µF, 25 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 85°C with a rated lifetime of 3000 hours at 85°C, serving general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	10000 µF
Tolerance	±20%
Voltage - Rated	25 V
ESR (Equivalent Series Resistance)	58 mOhm @ 120 Hz
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution of the ECO-S1EP103BA is determined by strict equivalence across the following critical parameters: capacitance value (10000 µF), voltage rating (25 V), tolerance (±20%), lead spacing (10.00 mm), package type (Radial, Can - Snap-In), and mounting configuration (Through Hole). All substitute parts listed maintain these core electrical and mechanical specifications. Variations in ESR, ripple current ratings, physical dimensions (diameter and height), and lifetime specifications are documented to enable informed selection based on application requirements. Product status and compliance certifications are provided to support procurement decisions for active versus obsolete components.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120 Hz	Lifetime @ 85°C	Lead Spacing	Diameter	Height (Max)	Product Status
ECO-S1EP103BA	Panasonic	10000 µF	25 V	±20%	58 mOhm	3000 Hrs	10.00 mm	22.00 mm	35.00 mm	Obsolete
380LX103M025H032	Cornell Dubilier Electronics	10000 µF	25 V	±20%	58 mOhm	3000 Hrs	10.00 mm	22.00 mm	37.00 mm	Active
380LX103M025J022	Cornell Dubilier Electronics	10000 µF	25 V	±20%	58 mOhm	3000 Hrs	10.00 mm	25.00 mm	32.00 mm	Active
380LX103M025K012	Cornell Dubilier Electronics	10000 µF	25 V	±20%	136 mOhm	3000 Hrs	10.00 mm	30.00 mm	27.00 mm	Active
B41231A5109M000	EPCOS - TDK Electronics	10000 µF	25 V	±20%	Not Specified	2000 Hrs	10.00 mm	22.00 mm	42.00 mm	Active
SLPX103M025C3P3	Cornell Dubilier Electronics	10000 µF	25 V	±20%	60 mOhm	3000 Hrs	10.00 mm	25.00 mm	30.00 mm	Active
SLPX103M025E1P3	Cornell Dubilier Electronics	10000 µF	25 V	±20%	60 mOhm	3000 Hrs	10.00 mm	30.00 mm	25.00 mm	Active
SLPX103M025A5P3	Cornell Dubilier Electronics	10000 µF	25 V	±20%	60 mOhm	3000 Hrs	10.00 mm	22.00 mm	35.00 mm	Active

Engineering Selection Recommendations

All substitute parts maintain the core electrical specifications of capacitance, voltage rating, tolerance, and lead spacing required for direct functional replacement. Selection among active alternatives should prioritize parts with matching or superior product status and compliance certifications.

SLPX103M025A5P3 provides the closest dimensional match to the original ECO-S1EP103BA, with identical diameter (22.00 mm) and height (35.00 mm), combined with active product status and ROHS3 compliance. This part is recommended as the primary substitute for applications requiring minimal mechanical redesign.

380LX103M025H032 offers direct electrical equivalence with matching ESR (58 mOhm @ 120 Hz) and lifetime rating (3000 Hrs @ 85°C), with active status and ROHS3 compliance. Height variation (37.00 mm versus 35.00 mm) requires verification of available mounting clearance.

380LX103M025K012 and SLPX103M025C3P3 present alternative form factors with different physical dimensions. 380LX103M025K012 exhibits elevated ESR (136 mOhm @ 120 Hz), which may impact ripple current performance in high-frequency applications. SLPX103M025C3P3 maintains lower ESR (60 mOhm @ 120 Hz) with compact height (30.00 mm).

B41231A5109M000 provides active status and ROHS3 compliance but specifies reduced lifetime (2000 Hrs @ 85°C) compared to the original specification. ESR is not specified for this part. Selection requires confirmation that reduced lifetime meets application requirements.

Frequently Asked Questions (FAQ)

Q: Can SLPX103M025A5P3 be used as a direct replacement for ECO-S1EP103BA?

A: Yes. SLPX103M025A5P3 maintains identical capacitance (10000 µF), voltage rating (25 V), tolerance (±20%), lead spacing (10.00 mm), and physical dimensions (22.00 mm diameter, 35.00 mm height). The part is active and ROHS3 compliant, making it suitable for direct substitution without circuit board modification.

Q: What is the significance of ESR variation among substitute parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. The original ECO-S1EP103BA specifies 58 mOhm @ 120 Hz. Substitute parts with matching ESR (380LX103M025H032 at 58 mOhm) maintain identical ripple current performance. Parts with slightly elevated ESR (SLPX series at 60 mOhm) show minimal deviation. 380LX103M025K012 at 136 mOhm represents significant ESR increase and requires application-specific evaluation for ripple current compatibility.

Q: Are there mechanical constraints when substituting parts with different physical dimensions?

A: Yes. While all substitute parts maintain 10.00 mm lead spacing for through-hole mounting, diameter and height vary. SLPX103M025A5P3 matches original dimensions exactly. 380LX103M025H032 is 2.00 mm taller (37.00 mm). 380LX103M025J022 has increased diameter (25.00 mm) with reduced height (32.00 mm). SLPX103M025E1P3 has maximum diameter (30.00 mm) with minimum height (25.00 mm). Verify available mounting space and clearance to adjacent components before selection.

Q: What is the impact of lifetime rating differences?

A: The original ECO-S1EP103BA specifies 3000 hours at 85°C. Most substitute parts maintain this rating. B41231A5109M000 specifies 2000 hours at 85°C, representing a 33% reduction in rated lifetime. Applications requiring extended operational life or high-temperature environments should prioritize parts with 3000-hour ratings.

Q: Which substitute part offers the best compliance profile?

A: All active substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. SLPX103M025A5P3 combines full compliance with dimensional equivalence and active product status, making it the most straightforward compliance-aligned choice.

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