ECO-S1KA821BA Equivalent & Substitute Parts

Part Overview

The ECO-S1KA821BA is a 820 µF, 80 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 -40°C to 105°C with a rated lifetime of 3000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	820 µF
Voltage Rating	80 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.866" (22.00 mm)
Height (Seated Max)	1.063" (27.00 mm)
Mounting Type	Through Hole
Operating Temperature	-40°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitute parts for the ECO-S1KA821BA are categorized based on the following substitution criteria:

Direct Equivalents maintain identical electrical and mechanical specifications: 820 µF capacitance, 80 V voltage rating, ±20% tolerance, identical physical dimensions (22.00 mm diameter, 27.00 mm height, 10.00 mm lead spacing), radial snap-in package, and through-hole mounting. These parts are interchangeable without circuit modification.

Upgrade Options increase the voltage rating to 100 V while maintaining all other parameters (820 µF, ±20% tolerance, identical package dimensions and mounting). These provide enhanced voltage margin and are backward-compatible in applications where the original 80 V rating was not a limiting constraint.

Parametric Equivalents match all critical electrical parameters (820 µF, 80 V, ±20% tolerance) and physical form factor but may differ in lifetime ratings or ripple current specifications. These are suitable for applications where the specific lifetime or ripple current values are not design-critical constraints.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	ESR @ 120 Hz	Product Status	RoHS Status
ECO-S1KA821BA	Panasonic Electronic Components	820 µF	80 V	±20%	3000 Hrs	222 mOhm	Obsolete	Not Specified
B41252A827M	EPCOS - TDK Electronics	820 µF	80 V	±20%	2000 Hrs	Not Specified	Active	ROHS3 Compliant
LGY1K821MELZ25	Nichicon	820 µF	80 V	±20%	5000 Hrs	Not Specified	Active	ROHS3 Compliant
381LX821M100H012	Cornell Dubilier Electronics (CDE)	820 µF	100 V	±20%	3000 Hrs	303 mOhm	Active	ROHS3 Compliant
80VXG820MEFC22X25	Rubycon	820 µF	80 V	±20%	5000 Hrs	Not Specified	Active	ROHS3 Compliant
381LX821M080H012	Cornell Dubilier Electronics (CDE)	820 µF	80 V	±20%	3000 Hrs	Not Specified	Active	ROHS3 Compliant
LGU1K821MELZ	Nichicon	820 µF	80 V	±20%	3000 Hrs	Not Specified	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement Priority: B41252A827M (EPCOS - TDK Electronics), 381LX821M080H012 (Cornell Dubilier Electronics), and LGU1K821MELZ (Nichicon) are active-status direct equivalents with identical electrical and mechanical specifications. All three are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

Extended Lifetime Option: LGY1K821MELZ25 (Nichicon) and 80VXG820MEFC22X25 (Rubycon) both provide 5000-hour lifetime ratings at 105°C, compared to the original 3000-hour specification. Both are active products with ROHS3 compliance and REACH unaffected status, offering improved reliability for long-term applications.

Voltage Upgrade Path: 381LX821M100H012 (Cornell Dubilier Electronics) increases the voltage rating to 100 V while maintaining 820 µF capacitance and identical physical dimensions. This upgrade is suitable for applications where additional voltage margin is beneficial and the circuit design permits higher voltage operation.

All substitute parts maintain the same radial snap-in package configuration, lead spacing (10.00 mm), and case dimensions (22.00 mm diameter, 27.00 mm height), ensuring mechanical compatibility with existing PCB layouts and mounting hardware.

Frequently Asked Questions (FAQ)

Q: Can I use a 100 V rated capacitor (381LX821M100H012) in place of the 80 V original?

A: Yes. The 100 V part maintains identical capacitance (820 µF), tolerance (±20%), physical dimensions, and mounting configuration. Higher voltage rating provides additional safety margin and is backward-compatible in circuits designed for 80 V operation.

Q: What is the difference between direct equivalents and parametric equivalents?

A: Direct equivalents (B41252A827M, 381LX821M080H012, LGU1K821MELZ) match all electrical and mechanical specifications of the original part. Parametric equivalents match core electrical parameters (capacitance, voltage, tolerance) and physical form factor but may have different lifetime or ripple current ratings. Selection depends on whether specific lifetime or ripple current values are design requirements.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant. The original ECO-S1KA821BA does not specify RoHS status. All substitutes are REACH unaffected except where noted as REACH affected.

Q: Do the substitute parts fit the same PCB footprint?

A: Yes. All substitute parts maintain identical lead spacing (10.00 mm), case diameter (22.00 mm), and seated height (27.00 mm). They are mechanically interchangeable with the original part in through-hole snap-in mounting applications.

Q: Which substitute offers the best reliability for long-term operation?

A: LGY1K821MELZ25 (Nichicon) and 80VXG820MEFC22X25 (Rubycon) both provide 5000-hour lifetime ratings at 105°C, compared to 3000 hours for the original and most other substitutes. Selection between these two depends on availability and specific ripple current requirements for your application.

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