ECO-S2DP122EA Equivalent & Substitute Parts

Part Overview

The Panasonic ECO-S2DP122EA is a 1200 µF, 200 V aluminum electrolytic capacitor in radial, can snap-in package with 3000 hours lifetime at 85°C. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The part operates across a temperature range of -40°C to 85°C and is suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	1200 µF
Voltage Rating	200 V
Tolerance	±20%
ESR @ 120 Hz	166 mOhm
Lifetime @ 85°C	3000 Hours
Operating Temperature Range	-40°C to 85°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.378" (35.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution for the ECO-S2DP122EA is determined by strict adherence to the following parameters:

Primary Substitution Criteria:

Capacitance: 1200 µF (exact match required)
Voltage Rating: 200 V minimum (higher ratings acceptable as upgrades)
Tolerance: ±20%
Lead Spacing: 0.394" (10.00 mm)
Package Type: Radial, Can - Snap-In
Mounting Type: Through Hole
Polarization: Polar

Substitution Categories:

Direct Equivalents maintain all electrical and mechanical parameters identical to the original part, including case diameter (35.00 mm), ESR characteristics, and lifetime ratings.

Upgrade Substitutes provide enhanced performance through higher temperature ratings (105°C vs. 85°C) or higher voltage ratings (220 V or 250 V vs. 200 V), while maintaining mechanical compatibility and core electrical specifications.

Similar Substitutes share the core electrical parameters but may differ in case dimensions, lifetime ratings, or ESR values. These parts are mechanically compatible but require verification of space constraints and thermal performance requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120 Hz	Lifetime @ Temp	Case Dia (mm)	Height (mm)	Status
ECO-S2DP122EA	Panasonic	1200 µF	200 V	±20%	166 mOhm	3000 Hrs @ 85°C	35.00	35.00	Obsolete
200USG1200MEFC35X30	Rubycon	1200 µF	200 V	±20%	—	3000 Hrs @ 85°C	35.00	32.00	Active
LLS2D122MELC	Nichicon	1200 µF	200 V	±20%	—	3000 Hrs @ 85°C	35.00	30.00	Active
LGU2D122MELC	Nichicon	1200 µF	200 V	±20%	—	3000 Hrs @ 105°C	35.00	35.00	Active
LLS2E122MELC	Nichicon	1200 µF	250 V	±20%	—	3000 Hrs @ 85°C	35.00	35.00	Active
SLPX122M220H5P3	CDE	1200 µF	220 V	±20%	166 mOhm	3000 Hrs @ 85°C	35.00	35.00	Active
380LQ122M200H052	CDE	1200 µF	200 V	±20%	166 mOhm	2000 Hrs @ 85°C	22.00	52.00	Active
LPX122M200E4P3	CDE	1200 µF	200 V	±20%	166 mOhm	1000 Hrs @ 85°C	30.00	45.00	Active
LPX122M200H5P3	CDE	1200 µF	200 V	±20%	166 mOhm	1000 Hrs @ 85°C	35.00	35.00	Active
SLPX122M200C9P3	CDE	1200 µF	200 V	±20%	166 mOhm	3000 Hrs @ 85°C	25.00	50.00	Active
SLPX122M200E4P3	CDE	1200 µF	200 V	±20%	166 mOhm	3000 Hrs @ 85°C	30.00	45.00	Active

Engineering Selection Recommendations

For Direct Replacement (Mechanical and Electrical Equivalence):

Select LGU2D122MELC (Nichicon) when the application permits operation at elevated temperatures. This part maintains identical mechanical dimensions (35.00 mm diameter, 35.00 mm height) and electrical specifications while offering extended temperature operation to 105°C and active product status with ROHS3 compliance.

For Voltage Margin Applications:

Select LLS2E122MELC (Nichicon) when the circuit design benefits from higher voltage rating (250 V vs. 200 V). This upgrade maintains identical case dimensions and 3000-hour lifetime at 85°C while providing additional voltage headroom. ROHS3 compliant and actively manufactured.

For Compact Form Factor with Equivalent Performance:

Select LLS2D122MELC (Nichicon) when space constraints favor reduced height (30.00 mm vs. 35.00 mm). This part maintains 3000-hour lifetime at 85°C, identical capacitance and voltage ratings, and active production status with ROHS3 compliance.

For Higher Voltage Rating with Equivalent Thermal Performance:

Select SLPX122M220H5P3 (Cornell Dubilier Electronics) when 220 V rating is required. This part matches the original ESR specification (166 mOhm @ 120 Hz), maintains 3000-hour lifetime at 85°C, and provides identical case dimensions. ROHS3 compliant and actively produced.

For Cost-Optimized Substitution with Reduced Lifetime:

Select SLPX122M200C9P3 or SLPX122M200E4P3 (Cornell Dubilier Electronics) when application requirements permit 1000-hour lifetime at 85°C. Both parts maintain 200 V rating, ±20% tolerance, and ESR specification of 166 mOhm @ 120 Hz. ROHS3 compliant and in active production.

All recommended substitutes maintain through-hole mounting compatibility, radial snap-in package configuration, and 10.00 mm lead spacing required for direct PCB mounting.

Frequently Asked Questions (FAQ)

Q: Can LGU2D122MELC replace ECO-S2DP122EA in all applications?

A: LGU2D122MELC is mechanically and electrically compatible for direct replacement. The extended temperature rating to 105°C provides additional operational margin. Verify that the application does not require the specific ESR value of 166 mOhm @ 120 Hz, as this specification is not provided for the Nichicon part.

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

A: Direct equivalents maintain all original specifications. Upgrade substitutes enhance performance through higher temperature ratings or voltage ratings while preserving mechanical compatibility and core electrical parameters. Upgrades are suitable when the application can utilize the enhanced capability.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed are ROHS3 compliant. The original ECO-S2DP122EA is obsolete and does not carry ROHS3 certification. Verify compliance requirements for your application before selection.

Q: Can parts with different case diameters be used interchangeably?

A: Parts with different case diameters (22.00 mm, 25.00 mm, 30.00 mm, 35.00 mm) maintain the same 10.00 mm lead spacing and through-hole mounting compatibility. However, verify available PCB space before substitution. Taller or wider cases may require layout modification.

Q: What does ESR specification mean for capacitor selection?

A: Equivalent Series Resistance (ESR) determines the capacitor's ability to handle ripple current and dissipate heat. The original part specifies 166 mOhm @ 120 Hz. Substitute parts without published ESR values should be evaluated through manufacturer datasheets if ESR performance is critical to circuit operation.

Q: Is LLS2E122MELC (250 V) suitable for a 200 V application?

A: Yes. Higher voltage-rated capacitors are suitable for lower voltage applications. The 250 V rating provides additional safety margin and is mechanically compatible. This is an upgrade substitution that enhances circuit reliability.

Q: What is the significance of lifetime ratings (1000 Hrs, 2000 Hrs, 3000 Hrs)?

A: Lifetime rating indicates the expected operational duration at the specified temperature (85°C or 105°C) before capacitance degradation reaches specified limits. Applications requiring extended service life should prioritize 3000-hour rated parts. Lower lifetime ratings are suitable for cost-optimized designs with shorter service requirements.

Q: Can I use SLPX122M200C9P3 in place of ECO-S2DP122EA?

A: SLPX122M200C9P3 is electrically equivalent but has a smaller case diameter (25.00 mm vs. 35.00 mm) and greater height (50.00 mm vs. 35.00 mm). Verify PCB layout accommodates the different form factor before substitution. Lead spacing remains compatible at 10.00 mm.

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