ECO-S2WB101BA Equivalent & Substitute Parts

Part Overview

The ECO-S2WB101BA is a 100 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new procurement requirements. The TS-HB series design provides general-purpose energy storage and filtering applications with a rated lifetime of 3000 hours at 105°C.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Size / Diameter	0.866" (22.00 mm)
Mounting Type	Through Hole
Polarization	Polar
Operating Temperature	-25°C ~ 105°C
Lifetime @ Temperature	3000 Hrs @ 105°C

Substitute Part Grouping Explanation

Substitution for the ECO-S2WB101BA is determined by strict equivalence across the following parameters:

Capacitance: 100 µF (exact match required)
Voltage Rating: 450 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)
Polarization: Polar (exact match required)

Substitute parts are grouped into two categories:

Direct Substitutes meet all core electrical and mechanical parameters with active product status or equivalent lifecycle support.

Similar Substitutes meet all core electrical and mechanical parameters but may have variations in height, ESR characteristics, or product lifecycle status that require engineering evaluation for specific applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ Frequency	Lifetime @ 105°C	Height (Max)	Product Status	RoHS Status
ECO-S2WB101BA	Panasonic Electronic Components	100 µF	450 V	±20%	1.658 Ω @ 120 Hz	3000 Hrs	1.378" (35.00 mm)	Obsolete	REACH Affected
B43508A5107M000	EPCOS - TDK Electronics	100 µF	450 V	±20%	1.23 Ω @ 100 Hz	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
LGN2W101MELZ30	Nichicon	100 µF	450 V	±20%	Not Specified	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
LGW2W101MELZ30	Nichicon	100 µF	450 V	±20%	Not Specified	3000 Hrs	1.181" (30.00 mm)	Active	ROHS3 Compliant
LGX2W101MELZ30	Nichicon	100 µF	450 V	±20%	Not Specified	5000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
LQS2W101MELZ30	Nichicon	100 µF	450 V	±20%	Not Specified	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
381LR101M450J022	Cornell Dubilier Electronics (CDE)	100 µF	450 V	±20%	1.326 Ω @ 120 Hz	3000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
381LX101M450J042	Cornell Dubilier Electronics (CDE)	100 µF	450 V	±20%	Not Specified	3000 Hrs	1.654" (42.00 mm)	Active	ROHS3 Compliant
B43504A5107M000	EPCOS - TDK Electronics	100 µF	450 V	±20%	1.35 Ω @ 100 Hz	3000 Hrs	1.457" (37.00 mm)	Not For New Designs	ROHS3 Compliant
MAL209457101E3	Vishay Beyschlag/Draloric/BC Components	100 µF	450 V	±20%	1.25 Ω @ 120 Hz	2000 Hrs	1.260" (32.00 mm)	Active	ROHS3 Compliant
SLP101M450A3P3	Cornell Dubilier Electronics (CDE)	100 µF	450 V	±20%	3.317 Ω	3000 Hrs	1.181" (30.00 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Preferred Direct Substitutes (Active Status, ROHS3 Compliant):

B43508A5107M000 (EPCOS - TDK Electronics): Active product status with lower ESR (1.23 Ω @ 100 Hz) and reduced height (32.00 mm). Suitable for direct replacement in new designs and legacy system support.
LGN2W101MELZ30, LQS2W101MELZ30 (Nichicon): Active products with standard height (32.00 mm) and equivalent electrical performance. Both series provide ROHS3 compliance and 3000-hour lifetime rating.
LGX2W101MELZ30 (Nichicon): Active product with extended lifetime (5000 hours @ 105°C), providing enhanced reliability for long-term applications. Height matches standard 32.00 mm dimension.

Alternative Substitutes (Active Status, Height Variations):

LGW2W101MELZ30 (Nichicon): Compact height (30.00 mm) for space-constrained PCB layouts. Active status with ROHS3 compliance.
381LR101M450J022 (Cornell Dubilier Electronics): Active product with ESR of 1.326 Ω @ 120 Hz and standard height (32.00 mm). Suitable where CDE sourcing is preferred.
MAL209457101E3 (Vishay Beyschlag/Draloric/BC Components): Active product with 2000-hour lifetime (reduced from 3000 hours). ESR of 1.25 Ω @ 120 Hz. Evaluate application lifetime requirements before selection.

Limited Use Substitutes:

B43504A5107M000 (EPCOS - TDK Electronics): Marked "Not For New Designs" but available for legacy system support. Increased height (37.00 mm) requires PCB layout verification.
381LX101M450J042 (Cornell Dubilier Electronics): Significantly increased height (42.00 mm). Use only where vertical space permits and legacy compatibility is required.
SLP101M450A3P3 (Cornell Dubilier Electronics): Elevated ESR (3.317 Ω) and compact height (30.00 mm). Evaluate thermal and ripple current performance for specific circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for ECO-S2WB101BA?

A: All listed substitute parts meet the core electrical and mechanical specifications: 100 µF capacitance, 450 V rating, ±20% tolerance, radial snap-in package, and 10.00 mm lead spacing. However, height variations exist. Verify PCB clearance before installation, particularly for parts with heights exceeding 35.00 mm (original specification).

Q: What is the difference between "Direct Substitutes" and "Similar Substitutes"?

A: Direct substitutes (B43508A5107M000, LGN2W101MELZ30, LQS2W101MELZ30, LGX2W101MELZ30) carry active product status and are recommended for new designs. Similar substitutes meet electrical and mechanical requirements but may have product lifecycle restrictions (B43504A5107M000) or height variations (381LX101M450J042, SLP101M450A3P3) requiring application-specific evaluation.

Q: Does product status affect my selection?

A: Yes. Parts marked "Active" are recommended for new designs and long-term procurement. B43504A5107M000 is marked "Not For New Designs" and should be used only for legacy system maintenance. The original ECO-S2WB101BA is obsolete, making active substitutes necessary for ongoing support.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. The original ECO-S2WB101BA is marked REACH Affected; all substitutes are REACH Unaffected, providing improved regulatory alignment.

Q: How do height differences affect my circuit?

A: The original part height is 35.00 mm. Substitutes range from 30.00 mm to 42.00 mm. Verify PCB layout clearance, particularly for compact designs or where vertical space is limited. Compact options (30.00 mm) include LGW2W101MELZ30 and SLP101M450A3P3.

Q: What is ESR and why does it vary among substitutes?

A: Equivalent Series Resistance (ESR) affects ripple current handling and thermal performance. Lower ESR values (1.23 Ω for B43508A5107M000) indicate better high-frequency performance. Higher ESR values (3.317 Ω for SLP101M450A3P3) may require thermal evaluation in ripple-current-intensive applications.

Q: Should I prioritize lifetime rating when selecting a substitute?

A: The original part specifies 3000 hours @ 105°C. Most substitutes match this rating. LGX2W101MELZ30 offers extended 5000-hour lifetime for applications requiring enhanced reliability. MAL209457101E3 provides reduced 2000-hour lifetime; evaluate application requirements before selection.

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

A: All substitutes meet the same electrical specifications and are mechanically compatible. However, maintain consistency within a single PCB assembly to simplify procurement, inventory management, and future maintenance.

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