ECO-S2EP181BA Equivalent & Substitute Parts

Part Overview

The ECO-S2EP181BA is a 180 µF, 250 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-UP series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring through-hole mounting. The part is currently obsolete, making equivalent substitutes necessary for ongoing system maintenance, repairs, and component sourcing.

Substiute Parts

ECO-S2EP181BA

Panasonic Electronic ComponentsIn Stock: 1081ECO-S2EP181BA Datasheet

Current PartRFQ

380LX181M250H012

Cornell Dubilier Electronics (CDE)In Stock: 910380LX181M250H012 Datasheet

DirectRFQ

SLP181M250A1P3

Cornell Dubilier Electronics (CDE)In Stock: 2982SLP181M250A1P3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECO-S2EP181BA is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 180 µF (exact match required)
• Voltage rating: 250 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package configuration: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)
• Case diameter: 0.866" (22.00mm) (exact match required)

The substitute parts identified below meet all these core parameters. Variations in ESR, ripple current ratings, operating temperature ranges, and case height are secondary considerations that do not prevent functional substitution within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products from Cornell Dubilier Electronics and provide direct functional equivalence to the obsolete ECO-S2EP181BA across all critical electrical and mechanical parameters.

380LX181M250H012 is the direct manufacturer equivalent. It maintains identical electrical specifications and operating temperature range (-40°C ~ 85°C) as the original part. This part is ROHS3 compliant and REACH unaffected, making it suitable for applications requiring modern regulatory compliance. The case height of 1.063" (27.00mm) is 0.079" taller than the original; verify clearance in confined mounting spaces before selection.

SLP181M250A1P3 offers an extended operating temperature range (-25°C ~ 105°C) and higher temperature lifetime rating (3000 Hrs @ 105°C). This part maintains the original case height of 0.984" (25.00mm), eliminating height-related clearance concerns. It is also ROHS3 compliant and REACH unaffected. The higher operating temperature capability may provide additional margin in thermally demanding applications.

Both substitutes are available in active inventory and carry identical ECCN and HTSUS classifications as the original part.

Frequently Asked Questions (FAQ)

Q: Can I use either substitute part interchangeably with the ECO-S2EP181BA?

A: Both substitute parts meet the core electrical and mechanical specifications required for functional equivalence. However, verify case height clearance in your specific PCB layout. The 380LX181M250H012 is 2mm taller than the original; the SLP181M250A1P3 matches the original height.

Q: What is the difference between the two substitute parts?

A: Both are 180 µF, 250 V capacitors with identical lead spacing and case diameter. The 380LX181M250H012 maintains the original operating temperature range. The SLP181M250A1P3 extends the operating temperature to 105°C and provides a higher temperature lifetime rating, which may be beneficial in thermally stressed environments.

Q: Are these parts RoHS and REACH compliant?

A: Both substitute parts are ROHS3 compliant and REACH unaffected. The original ECO-S2EP181BA is REACH affected, making the substitutes preferable for new designs or systems requiring modern regulatory compliance.

Q: Does the higher ESR of the substitute parts affect performance?

A: The substitute parts have slightly higher ESR values (1.11 Ohm and 1.106 Ohm) compared to the original (921 mOhm). Both remain within acceptable ranges for general-purpose aluminum electrolytic capacitor applications. Verify ESR specifications against your circuit's ripple current and thermal requirements.

Q: What is the significance of the case height difference?

A: The 380LX181M250H012 has a maximum seated height of 1.063" (27.00mm), compared to 0.984" (25.00mm) for the original and the SLP181M250A1P3. Confirm available vertical clearance on your PCB before selecting this part. The SLP181M250A1P3 eliminates this concern by matching the original height.