ECO-S2AA122DA Equivalent & Substitute Parts

Part Overview

The ECO-S2AA122DA is a 1200 µF, 100 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-HA series. This radial, can-style snap-in capacitor is rated for 3000 hours at 105°C with an ESR of 152 mOhm @ 120 Hz and is designed for general-purpose applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this capacitance and voltage specification.

Key Parameters

Parameter	Value
Capacitance	1200 µF
Voltage Rating	100 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Operating Temperature Range	-40°C to 105°C
Lifetime @ 105°C	3000 Hrs
Polarization	Polar
Application	General Purpose

Substitute Part Grouping Explanation

Substitution for the ECO-S2AA122DA is determined by strict adherence to the following electrical and mechanical parameters:

Capacitance: 1200 µF (exact match required)
Voltage Rating: 100 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)
Operating Temperature Range: -40°C to 105°C (exact match required)
Polarization: Polar (exact match required)

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalent: Parts meeting all electrical and mechanical parameters with identical or superior performance characteristics.

Upgrade Parts: Parts meeting all core parameters with enhanced lifetime ratings or compliance improvements.

Similar/Parametric Equivalents: Parts meeting all core electrical and mechanical parameters with variations in physical dimensions (diameter and height) that may require board layout verification.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Diameter (mm)	Height (mm)	Lifetime @ 105°C	Product Status	RoHS Status
ECO-S2AA122DA	Panasonic	1200 µF	100 V	±20%	30.00	27.00	3000 Hrs	Obsolete	Not Specified
100MXG1200MEFCSN25X25	Rubycon	1200 µF	100 V	±20%	25.00	27.00	3000 Hrs	Active	ROHS3 Compliant
LGY2A122MELB25	Nichicon	1200 µF	100 V	±20%	30.00	27.00	5000 Hrs	Active	ROHS3 Compliant
381LX122M100H042	Cornell Dubilier Electronics (CDE)	1200 µF	100 V	±20%	22.00	42.00	3000 Hrs	Active	ROHS3 Compliant
381LX122M100J032	Cornell Dubilier Electronics (CDE)	1200 µF	100 V	±20%	25.00	37.00	3000 Hrs	Active	ROHS3 Compliant
B41252C9128M	EPCOS - TDK Electronics	1200 µF	100 V	±20%	30.00	27.00	2000 Hrs	Active	ROHS3 Compliant
SLP122M100A5P3	Cornell Dubilier Electronics (CDE)	1200 µF	100 V	±20%	22.00	35.00	3000 Hrs	Active	ROHS3 Compliant
SLP122M100C3P3	Cornell Dubilier Electronics (CDE)	1200 µF	100 V	±20%	25.00	30.00	3000 Hrs	Active	ROHS3 Compliant
LGU2A122MELB	Nichicon	1200 µF	100 V	±20%	30.00	27.00	3000 Hrs	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Identical Dimensions:

LGY2A122MELB25 (Nichicon) and LGU2A122MELB (Nichicon) are the preferred selections. Both maintain the original 30.00 mm diameter and 27.00 mm height, requiring no board layout modifications. LGY2A122MELB25 offers extended lifetime (5000 hours @ 105°C) compared to the original 3000 hours. Both parts are ROHS3 compliant and currently in active production status.

For Compact Form Factor:

100MXG1200MEFCSN25X25 (Rubycon) reduces the diameter to 25.00 mm while maintaining the 27.00 mm height. This part is suitable for space-constrained applications and is ROHS3 compliant with active product status.

For Alternative Footprints:

SLP122M100C3P3 (Cornell Dubilier Electronics) provides a 25.00 mm diameter with 30.00 mm height. B41252C9128M (EPCOS - TDK Electronics) maintains the original 30.00 mm diameter and 27.00 mm height but offers a reduced lifetime of 2000 hours @ 105°C, suitable only for applications with lower reliability requirements.

For Extended Height Applications:

381LX122M100H042 and 381LX122M100J032 (Cornell Dubilier Electronics) accommodate applications requiring taller component profiles (42.00 mm and 37.00 mm respectively) with reduced diameters (22.00 mm and 25.00 mm).

All recommended substitutes are ROHS3 compliant and maintain the required electrical specifications: 1200 µF capacitance, 100 V voltage rating, ±20% tolerance, and -40°C to 105°C operating temperature range.

Frequently Asked Questions (FAQ)

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

A: Yes, provided the lead spacing remains 0.394" (10.00 mm) and the mounting type is through-hole snap-in. However, diameter and height variations require verification of available board space. Consult your PCB layout to confirm clearance before substitution.

Q: What is the significance of the lifetime rating difference between parts?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C). The original ECO-S2AA122DA is rated for 3000 hours. Substitutes with higher ratings (such as LGY2A122MELB25 at 5000 hours) provide extended service life. Parts with lower ratings (such as B41252C9128M at 2000 hours) should only be used in applications where reduced lifetime is acceptable.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant. The original ECO-S2AA122DA does not specify RoHS status. If RoHS compliance is required for your application, select from the active substitute parts listed.

Q: What does "snap-in" packaging mean for mechanical compatibility?

A: Snap-in refers to the mounting mechanism where the capacitor leads engage with spring-loaded contacts on the PCB. All listed parts use identical snap-in technology with 0.394" (10.00 mm) lead spacing, ensuring mechanical compatibility with existing snap-in sockets.

Q: Which substitute offers the best overall compatibility?

A: LGY2A122MELB25 (Nichicon) provides the closest match to the original part with identical dimensions (30.00 mm diameter, 27.00 mm height), extended lifetime (5000 hours @ 105°C), ROHS3 compliance, and active production status. This part requires no board layout modifications.

Q: Can I mix different substitute parts in the same circuit?

A: Yes, all listed substitutes meet the same electrical specifications (1200 µF, 100 V, ±20% tolerance) and operating temperature range (-40°C to 105°C). However, for consistency and simplified inventory management, using a single substitute part across your design is recommended.

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