ECO-S2GP820BA Equivalent & Substitute Parts

Part Overview

The ECO-S2GP820BA is an 82 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. 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 -25°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.

Key Parameters

Parameter	Value
Capacitance	82 µF
Voltage Rating	400 V
Tolerance	±20%
ESR @ 120 Hz	2.022 Ohm
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-25°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.866" (22.00 mm)
Height (Seated Max)	0.984" (25.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

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

Capacitance: 82 µF (exact match required)
Voltage Rating: 400 V minimum (equal or higher voltage ratings are acceptable)
Tolerance: ±20% (matching tolerance specification)
Package Type: Radial, Can - Snap-In (identical mechanical form factor)
Lead Spacing: 0.394" (10.00 mm) (exact match for PCB compatibility)
Case Diameter: 0.866" (22.00 mm) (exact match for mechanical fit)
Mounting Type: Through Hole (identical mounting method)
Polarization: Polar (identical polarity requirement)

Parts are categorized as direct equivalents when all parameters match the original specification. Upgrade parts offer enhanced performance characteristics such as higher temperature ratings, improved ESR, or higher voltage ratings while maintaining mechanical and electrical compatibility. Similar parts meet core electrical and mechanical requirements but may have reduced lifetime ratings or narrower operating temperature ranges.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120 Hz	Lifetime @ Temp	Operating Temp	Case Dia	Height (Max)	Product Status	RoHS Status
ECO-S2GP820BA	Panasonic	82 µF	400 V	±20%	2.022 Ohm	3000 Hrs @ 85°C	-25°C ~ 85°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Obsolete	RoHS Non-Compliant
380LX820M400H012	Cornell Dubilier Electronics	82 µF	400 V	±20%	2 Ohm	3000 Hrs @ 85°C	-25°C ~ 85°C	0.866" (22.00 mm)	1.063" (27.00 mm)	Active	RoHS3 Compliant
400USG82MEFCSN20X25	Rubycon	82 µF	400 V	±20%	Not Specified	3000 Hrs @ 85°C	-25°C ~ 85°C	0.787" (20.00 mm)	1.063" (27.00 mm)	Active	RoHS3 Compliant
381LR820M400H012	Cornell Dubilier Electronics	82 µF	400 V	±20%	2.44 Ohm	3000 Hrs @ 105°C	-25°C ~ 105°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
381LR820M420H012	Cornell Dubilier Electronics	82 µF	420 V	±20%	2.43 Ohm	3000 Hrs @ 105°C	-25°C ~ 105°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
381LR820M450H012	Cornell Dubilier Electronics	82 µF	450 V	±20%	1.617 Ohm	3000 Hrs @ 105°C	-25°C ~ 105°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
LGU2G820MELZ	Nichicon	82 µF	400 V	±20%	Not Specified	3000 Hrs @ 105°C	-25°C ~ 105°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
LGUW6820MELZ	Nichicon	82 µF	420 V	±20%	Not Specified	3000 Hrs @ 105°C	-25°C ~ 105°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
LGW2W820MELZ25	Nichicon	82 µF	450 V	±20%	Not Specified	3000 Hrs @ 105°C	-25°C ~ 105°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
LLS2W820MELZ	Nichicon	82 µF	450 V	±20%	Not Specified	3000 Hrs @ 85°C	-25°C ~ 85°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant
LPX820M400A1P3	Cornell Dubilier Electronics	82 µF	400 V	±20%	2.426 Ohm	1000 Hrs @ 85°C	-40°C ~ 85°C	0.866" (22.00 mm)	0.984" (25.00 mm)	Active	RoHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Mechanical & Electrical Match):

The 381LR820M400H012 from Cornell Dubilier Electronics provides the closest direct equivalent to the ECO-S2GP820BA. Both parts share identical case diameter (0.866"), height (0.984"), lead spacing (10.00 mm), and capacitance/voltage/tolerance specifications. The 381LR820M400H012 is active in production and RoHS3 compliant, addressing the obsolescence of the original part while maintaining full mechanical compatibility with existing PCB designs.

Upgrade Options (Enhanced Performance):

The 381LR820M420H012 and 381LR820M450H012 offer higher voltage ratings (420 V and 450 V respectively) with extended operating temperature range (-25°C to 105°C) and improved ESR characteristics. These parts maintain identical mechanical form factors and are suitable for applications requiring enhanced thermal stability or higher voltage margins.

The LGU2G820MELZ and LGUW6820MELZ from Nichicon provide 400 V and 420 V ratings with extended temperature operation to 105°C. These parts maintain the original case dimensions and are RoHS3 compliant.

The LGW2W820MELZ25 and LLS2W820MELZ from Nichicon offer 450 V ratings with identical mechanical compatibility. The LGW2W820MELZ25 extends operating temperature to 105°C, while the LLS2W820MELZ maintains the original 85°C thermal rating.

Mechanical Compatibility Consideration:

The 380LX820M400H012 from Cornell Dubilier Electronics meets all electrical specifications but has a maximum seated height of 1.063" (27.00 mm) compared to the original 0.984" (25.00 mm). This 2 mm height difference requires verification against PCB clearance constraints before selection.

The 400USG82MEFCSN20X25 from Rubycon has a case diameter of 0.787" (20.00 mm), which differs from the original 0.866" (22.00 mm). This dimensional variance may affect mechanical fit in applications with tight component spacing.

Limited Lifetime Application:

The LPX820M400A1P3 from Cornell Dubilier Electronics has a reduced lifetime rating of 1000 hours at 85°C compared to the original 3000 hours. This part is suitable only for applications with lower thermal stress or shorter operational life requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the original ECO-S2GP820BA?

A: Yes. The ECO-S2GP820BA is rated at 400 V. Substitute parts with 420 V or 450 V ratings (such as 381LR820M420H012, 381LR820M450H012, LGUW6820MELZ, LGW2W820MELZ25, or LLS2W820MELZ) are electrically compatible and provide additional voltage margin. Higher voltage ratings do not affect circuit operation when the applied voltage remains within the original 400 V specification.

Q: What is the significance of the case diameter difference in the 400USG82MEFCSN20X25?

A: The 400USG82MEFCSN20X25 has a case diameter of 0.787" (20.00 mm) versus the original 0.866" (22.00 mm). This 0.079" (2.00 mm) reduction in diameter may affect mechanical fit in component holders, sockets, or applications with tight radial spacing constraints. PCB layout verification is required before substitution.

Q: Why does the 380LX820M400H012 have a greater seated height than the original part?

A: The 380LX820M400H012 has a maximum seated height of 1.063" (27.00 mm) compared to the ECO-S2GP820BA at 0.984" (25.00 mm). This 0.079" (2.00 mm) height difference is within typical component tolerance ranges but requires clearance verification in applications with limited vertical space, such as compact power supplies or enclosed assemblies.

Q: Is the LPX820M400A1P3 suitable as a direct replacement?

A: The LPX820M400A1P3 meets the electrical and mechanical specifications but has a reduced lifetime rating of 1000 hours at 85°C versus the original 3000 hours. This part is suitable only for applications with lower thermal stress or shorter operational life. For continuous-duty or high-reliability applications, upgrade parts with 3000-hour ratings are recommended.

Q: What does RoHS3 compliance mean for substitute parts?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances regulations, restricting lead, cadmium, mercury, and other hazardous materials. The original ECO-S2GP820BA is RoHS non-compliant. All recommended substitute parts are RoHS3 compliant, making them suitable for applications subject to environmental and regulatory requirements.

Q: Can I substitute parts with different ESR values?

A: ESR (Equivalent Series Resistance) affects ripple current handling and heat dissipation. The original part has 2.022 Ohm ESR at 120 Hz. Substitute parts with lower ESR values (such as 381LR820M450H012 at 1.617 Ohm) provide improved performance. Parts with higher ESR or unspecified ESR values require circuit analysis to confirm acceptable performance in ripple-current-sensitive applications.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts listed are packaged as radial, can snap-in components with through-hole mounting. Lead spacing is standardized at 0.394" (10.00 mm) across all parts. Case diameter and height variations are noted in the parameter comparison table and require mechanical verification.

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