ECO-S2EP102DX Equivalent & Substitute Parts

Part Overview

The ECO-S2EP102DX is a 1000 µF, 250 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. 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	1000 µF
Voltage Rating	250 V
Tolerance	±20%
ESR @ 120Hz	182 mOhm
Lifetime @ 85°C	3000 Hrs
Operating Temperature	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.181" (30.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters: capacitance (1000 µF), voltage rating (250 V), tolerance (±20%), package type (radial can snap-in), lead spacing (10.00 mm), and operating temperature range (-40°C to 85°C). Parts are grouped into two categories:

Direct Substitutes maintain identical or superior electrical performance characteristics, including ESR specifications and lifetime ratings at 85°C. These parts are interchangeable without circuit redesign.

Similar Substitutes meet all core electrical and mechanical parameters but may exhibit variations in case diameter or height. These parts require physical fit verification in the target application before deployment.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 120Hz	Lifetime @ 85°C	Case Dia (mm)	Height (mm)	Status
ECO-S2EP102DX	Panasonic	1000 µF	250 V	182 mOhm	3000 Hrs	30.00	45.00	Obsolete
250USG1000MEFCSN25X45	Rubycon	1000 µF	250 V	—	3000 Hrs	25.00	47.00	Active
380LQ102M250K032	CDE	1000 µF	250 V	199 mOhm	2000 Hrs	30.00	37.00	Active
380LX102M250K452	CDE	1000 µF	250 V	182 mOhm	3000 Hrs	30.00	47.00	Active
B43501C2108M000	EPCOS - TDK Electronics	1000 µF	250 V	100 mOhm	10000 Hrs	30.00	47.00	Active
LLS2E102MELB	Nichicon	1000 µF	250 V	—	3000 Hrs	30.00	40.00	Active
LPX102M250E4P3	CDE	1000 µF	250 V	199 mOhm	1000 Hrs	30.00	45.00	Active
SLPX102M250E5P3	CDE	1000 µF	250 V	199 mOhm	3000 Hrs	30.00	35.00	Active
380LQ102M250A022	CDE	1000 µF	250 V	199 mOhm	2000 Hrs	35.00	32.00	Active
380LQ102M250J452	CDE	1000 µF	250 V	199 mOhm	2000 Hrs	25.00	47.00	Active
380LX102M250A032	CDE	1000 µF	250 V	182 mOhm	3000 Hrs	35.00	37.00	Active

Engineering Selection Recommendations

Primary Recommendation: 380LX102M250K452 (Cornell Dubilier Electronics)

This part provides direct electrical equivalence to the ECO-S2EP102DX with identical ESR (182 mOhm @ 120Hz) and lifetime rating (3000 Hrs @ 85°C). The 380LX102M250K452 maintains the same case diameter (30.00 mm) and lead spacing (10.00 mm), ensuring mechanical compatibility. Active product status and ROHS3 compliance support long-term supply chain stability.

Secondary Recommendation: B43501C2108M000 (EPCOS - TDK Electronics)

This part exceeds the original specification with superior ESR performance (100 mOhm @ 100Hz) and extended lifetime (10000 Hrs @ 85°C). Identical case diameter and lead spacing ensure direct mechanical fit. Active status and ROHS3 compliance provide supply assurance. Selection is appropriate for applications requiring enhanced reliability margins.

Alternative for Space-Constrained Designs: SLPX102M250E5P3 (Cornell Dubilier Electronics)

This part offers the lowest profile height (35.00 mm versus 45.00 mm original) while maintaining identical capacitance, voltage, and 3000-hour lifetime rating. ESR is slightly elevated (199 mOhm @ 120Hz). Suitable for applications where vertical clearance is limited.

Not Recommended: LPX102M250E4P3 (Cornell Dubilier Electronics)

Lifetime rating of 1000 Hrs @ 85°C falls below the original 3000-hour specification, reducing component reliability in thermal stress conditions.

Frequently Asked Questions (FAQ)

Q: Can 380LX102M250K452 be used as a direct replacement for ECO-S2EP102DX?

A: Yes. Both parts share identical capacitance (1000 µF), voltage rating (250 V), ESR (182 mOhm @ 120Hz), and lifetime (3000 Hrs @ 85°C). Lead spacing and case diameter are identical, confirming mechanical and electrical interchangeability.

Q: What is the significance of ESR in capacitor substitution?

A: Equivalent Series Resistance directly affects ripple current handling and heat dissipation. Lower ESR values indicate superior high-frequency performance. The ECO-S2EP102DX specifies 182 mOhm @ 120Hz; substitutes with equal or lower ESR maintain or improve circuit performance.

Q: Why do some substitute parts have different case diameters?

A: Case diameter variations (25.00 mm, 30.00 mm, 35.00 mm) reflect different internal construction while maintaining identical electrical ratings. Physical fit verification is required before substitution when case diameter differs from the original specification.

Q: Is lifetime rating critical for substitution?

A: Lifetime rating indicates component durability under rated thermal stress (85°C). Substitutes with equal or extended lifetime ratings are acceptable. Parts with reduced lifetime (e.g., 1000 Hrs versus 3000 Hrs) may compromise long-term reliability and are not recommended for direct replacement.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance certifies that the component meets Restriction of Hazardous Substances regulations, ensuring environmental and regulatory compliance in manufacturing and end-of-life disposal. All active substitute parts listed carry ROHS3 certification.

Q: Can I substitute a part with higher voltage rating?

A: Yes. A 250 V rated capacitor can be replaced with a higher voltage-rated part (e.g., 400 V) without circuit modification. The higher voltage rating provides additional safety margin. However, physical dimensions may increase, requiring fit verification.

Q: What is the difference between "Direct" and "Similar" substitutes?

A: Direct substitutes maintain identical electrical performance and physical dimensions. Similar substitutes meet all core electrical parameters but may have variations in case diameter or height, requiring physical fit assessment before deployment.

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