Equivalent & Substitute Parts for ECO-S1JA122BA

Part Overview

The Panasonic ECO-S1JA122BA is a 1200 µF, 63 V aluminum electrolytic capacitor in radial, can snap-in package with a rated lifetime of 3000 hours at 105°C. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 105°C and is suitable for general-purpose applications requiring through-hole mounting with 10.00 mm lead spacing.

Key Parameters

Parameter	Value
Capacitance	1200 µF
Voltage Rating	63 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 105°C
Lifetime @ 105°C	3000 Hrs (minimum)
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance: Must be 1200 µF
Voltage Rating: Must be 63 V
Tolerance: Must be ±20%
Package Type: Must be Radial, Can - Snap-In
Lead Spacing: Must be 0.394" (10.00 mm)
Mounting Type: Must be Through Hole
Operating Temperature Range: Must support -40°C to 105°C
Polarization: Must be Polar

Parts are grouped into the following categories based on product status and lifetime rating:

Direct Equivalents (Active Status, 3000 Hrs @ 105°C): Parts meeting all core parameters with matching or superior lifetime specifications and active product status.

Upgrade Options (Active Status, 5000 Hrs @ 105°C): Parts exceeding the minimum lifetime requirement, offering extended operational reliability.

Similar Parts (Active Status, Reduced Lifetime): Parts meeting all core parameters but with reduced lifetime ratings below 3000 hours at 105°C.

Parametric Equivalents (Active Status, 3000 Hrs @ 105°C): Parts meeting all core parameters with matching lifetime specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Size / Dimension	Height (Max)	Lifetime @ 105°C	Product Status	RoHS Status
ECO-S1JA122BA	Panasonic	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	1.063" (27.00 mm)	3000 Hrs	Obsolete	Not Specified
381LX122M063H012	Cornell Dubilier Electronics (CDE)	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	1.063" (27.00 mm)	3000 Hrs	Active	ROHS3 Compliant
SLP122M063A1P3	Cornell Dubilier Electronics (CDE)	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	0.984" (25.00 mm)	3000 Hrs	Active	ROHS3 Compliant
63VXG1200MEFC22X25	Rubycon	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	1.063" (27.00 mm)	5000 Hrs	Active	ROHS3 Compliant
LGY1J122MELZ25	Nichicon	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	1.063" (27.00 mm)	5000 Hrs	Active	ROHS3 Compliant
B41252A8128M000	EPCOS - TDK Electronics	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	1.063" (27.00 mm)	2000 Hrs	Active	ROHS3 Compliant
LP122M063C1P3	Cornell Dubilier Electronics (CDE)	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.984" Dia (25.00 mm)	0.984" (25.00 mm)	1000 Hrs	Active	ROHS3 Compliant
LGU1J122MELZ	Nichicon	1200 µF	63 V	±20%	0.394" (10.00 mm)	0.866" Dia (22.00 mm)	1.063" (27.00 mm)	3000 Hrs	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Active Product Status:

The 381LX122M063H012 (Cornell Dubilier Electronics) and LGU1J122MELZ (Nichicon) are direct parametric equivalents meeting all core specifications with 3000-hour lifetime ratings and active product status. Both are ROHS3 compliant and maintain identical physical dimensions and electrical characteristics to the obsolete ECO-S1JA122BA.

For Extended Reliability Applications:

The 63VXG1200MEFC22X25 (Rubycon) and LGY1J122MELZ25 (Nichicon) offer upgrade specifications with 5000-hour lifetime ratings at 105°C, providing enhanced operational margin for applications requiring extended service life. Both maintain active product status and ROHS3 compliance.

For Space-Constrained Designs:

The SLP122M063A1P3 (Cornell Dubilier Electronics) provides a reduced-height option at 0.984" (25.00 mm) seated height while maintaining 3000-hour lifetime and active product status, suitable for designs with vertical space limitations.

Not Recommended for New Designs:

The B41252A8128M000 (EPCOS - TDK Electronics) and LP122M063C1P3 (Cornell Dubilier Electronics) have reduced lifetime ratings of 2000 hours and 1000 hours respectively, falling below the original specification. These parts are suitable only for applications with reduced reliability requirements or where cost optimization is prioritized over lifetime performance.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different lead spacing?

A: No. All substitute parts must maintain the 0.394" (10.00 mm) lead spacing to ensure compatibility with existing PCB layouts and through-hole mounting patterns.

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). Parts with 5000-hour ratings provide extended service life compared to the original 3000-hour specification. Parts with reduced ratings below 3000 hours do not meet the original performance envelope.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed are ROHS3 compliant. The original ECO-S1JA122BA does not specify RoHS status due to its obsolete classification.

Q: Can I use a substitute part with a larger physical diameter?

A: The LP122M063C1P3 has a 0.984" diameter compared to the standard 0.866" diameter. Physical fit must be verified against PCB layout and enclosure constraints before selection.

Q: Which substitute offers the best balance of availability and performance?

A: Selection depends on application requirements. The 381LX122M063H012 and LGU1J122MELZ provide direct equivalence with active status. The 63VXG1200MEFC22X25 and LGY1J122MELZ25 offer superior lifetime ratings for demanding applications.

Q: Are there electrical performance differences between substitute parts?

A: ESR (Equivalent Series Resistance) and ripple current ratings vary among substitutes. The SLP122M063A1P3 specifies 332 mOhm ESR at 120 Hz, while the LP122M063C1P3 specifies 210 mOhm ESR at 120 Hz. These differences may affect circuit performance in high-frequency or high-ripple-current applications.

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