ECO-S1KP122BA Equivalent & Substitute Parts

Part Overview

The ECO-S1KP122BA is a 1200 µF, 80 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system support and component procurement. 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.

Substiute Parts

ECO-S1KP122BA

Panasonic Electronic ComponentsIn Stock: 1105ECO-S1KP122BA Datasheet

Current PartRFQ

B41231A128M

EPCOS - TDK ElectronicsIn Stock: 1351B41231A128M Datasheet

SimilarRFQ

SLPX122M080A1P3

Cornell Dubilier Electronics (CDE)In Stock: 780SLPX122M080A1P3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECO-S1KP122BA is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 1200 µF (exact match required)
• Voltage rating: 80 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package configuration: Radial, Can - Snap-In (exact match required)
• Lead spacing: 0.394" (10.00 mm) (exact match required)
• Case diameter: 0.866" (22.00 mm) (exact match required)
• Mounting type: Through Hole (exact match required)
• Operating temperature range: -40°C to 85°C (exact match required)
• Polarization: Polar (exact match required)

Two substitute parts meet these criteria: B41231A128M (EPCOS - TDK Electronics) and SLPX122M080A1P3 (Cornell Dubilier Electronics). Both parts satisfy all mandatory electrical and mechanical parameters for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status, addressing the obsolescence of the ECO-S1KP122BA.

B41231A128M (EPCOS - TDK Electronics): This substitute meets all mandatory electrical and mechanical parameters. The part is ROHS3 compliant. Height dimension is 1.063" (27.00 mm), which exceeds the original 0.984" (25.00 mm) by 0.079" (2.00 mm). Lifetime rating is 2000 hours at 85°C, lower than the original 3000 hours. ESR specification is not provided for this part.

SLPX122M080A1P3 (Cornell Dubilier Electronics): This substitute meets all mandatory electrical and mechanical parameters with identical height dimension of 0.984" (25.00 mm) to the original part. The part is ROHS3 compliant. Lifetime rating matches the original at 3000 hours at 85°C. ESR is specified at 276 mOhm @ 120 Hz, compared to the original 221 mOhm @ 120 Hz.

Selection between these two substitutes depends on physical space constraints and thermal performance requirements. The SLPX122M080A1P3 provides closer parametric alignment to the original part, including matching height and lifetime specifications.

Frequently Asked Questions (FAQ)

Q: Can B41231A128M be used in applications with strict height constraints? A: The B41231A128M has a maximum seated height of 1.063" (27.00 mm), which is 2.00 mm taller than the original ECO-S1KP122BA at 0.984" (25.00 mm). Physical clearance verification is required before selection.

Q: What is the difference in lifetime between the substitute parts? A: The B41231A128M is rated for 2000 hours at 85°C, while the SLPX122M080A1P3 matches the original specification at 3000 hours at 85°C. Applications requiring extended operational life at elevated temperatures should consider this difference.

Q: Are both substitute parts RoHS compliant? A: Both B41231A128M and SLPX122M080A1P3 are ROHS3 compliant. The original ECO-S1KP122BA RoHS status is not specified in available documentation.

Q: How do the ESR values compare across all three parts? A: The original ECO-S1KP122BA specifies 221 mOhm @ 120 Hz. The SLPX122M080A1P3 specifies 276 mOhm @ 120 Hz. The B41231A128M does not provide ESR specification. Applications sensitive to equivalent series resistance should prioritize the ECO-S1KP122BA or SLPX122M080A1P3.

Q: Are the lead spacing and case diameter identical across all three parts? A: Yes. All three parts share identical lead spacing of 0.394" (10.00 mm) and case diameter of 0.866" (22.00 mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.

Q: What is the ripple current capability of each substitute? A: The ECO-S1KP122BA handles 1.81 A @ 120 Hz. The B41231A128M handles 2.24 A @ 120 Hz. The SLPX122M080A1P3 handles 1.77 A @ 120 Hz. Applications with specific ripple current requirements should verify compatibility with the selected substitute.