ECO-S2EP151BA Equivalent & Substitute Parts

Part Overview

The ECO-S2EP151BA is a 150 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 maintenance, repair, and legacy system support.

Substiute Parts

ECO-S2EP151BA

Panasonic Electronic ComponentsIn Stock: 826ECO-S2EP151BA Datasheet

Current PartRFQ

B43231E2157M

EPCOS - TDK ElectronicsIn Stock: 912B43231E2157M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECO-S2EP151BA is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 150 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)
• Operating temperature range: -40°C ~ 85°C (minimum requirement)
• Polarization: Polar (exact match required)

The B43231E2157M from EPCOS - TDK Electronics meets all these criteria and qualifies as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The B43231E2157M is the qualified equivalent substitute for the ECO-S2EP151BA. Both parts share identical electrical specifications (150 µF, 250 V, ±20% tolerance) and mechanical compatibility (radial snap-in package, 10.00mm lead spacing, 22.00mm diameter).

The B43231E2157M offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance supports modern manufacturing and environmental standards
• REACH Unaffected status simplifies regulatory documentation
• Ripple current performance at high frequency (1.395 A @ 20 kHz) exceeds the original specification

The B43231E2157M has a slightly reduced lifetime rating (2000 Hrs @ 85°C versus 3000 Hrs @ 85°C) and a maximum seated height of 1.063" (27.00mm) compared to 0.984" (25.00mm) for the original part. These differences must be evaluated against specific application requirements and available board space.

Frequently Asked Questions (FAQ)

Q: Can the B43231E2157M be used as a direct replacement for the ECO-S2EP151BA?

A: Yes. Both parts have identical capacitance (150 µF), voltage rating (250 V), tolerance (±20%), lead spacing (10.00mm), case diameter (22.00mm), and mounting type (through-hole radial snap-in). Physical board layout must accommodate the B43231E2157M's maximum height of 1.063" (27.00mm).

Q: What is the difference in lifetime between these parts?

A: The ECO-S2EP151BA is rated for 3000 hours at 85°C, while the B43231E2157M is rated for 2000 hours at 85°C. Application-specific thermal and operational profiles determine whether this difference is significant for your use case.

Q: Are there any compliance differences between these parts?

A: The B43231E2157M is ROHS3 compliant and REACH unaffected, while the ECO-S2EP151BA is REACH affected. For applications subject to environmental regulations, the B43231E2157M provides simplified compliance documentation.

Q: Will the B43231E2157M fit in the same PCB footprint?

A: Lead spacing and case diameter are identical. The B43231E2157M has a maximum seated height of 1.063" (27.00mm) versus 0.984" (25.00mm) for the original part. Verify available vertical clearance on your PCB assembly.

Q: What are the ripple current specifications?

A: Both parts support 890-900 mA ripple current at 120 Hz. At high frequency, the B43231E2157M delivers 1.395 A @ 20 kHz, compared to 1.25 A @ 100 kHz for the original part. High-frequency ripple current performance depends on your circuit's operating frequency.