ECO-S2DP681DA Equivalent & Substitute Parts

Part Overview

The ECO-S2DP681DA is a 680 µF 200 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 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	680 µF
Voltage Rating	200 V
Tolerance	±20%
ESR @ 120Hz	268 mOhm
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across electrical and mechanical specifications. The primary substitution criteria are:

Core Electrical Parameters: Capacitance value (680 µF), voltage rating (200 V minimum), tolerance (±20%), and lifetime rating (3000 Hrs @ 85°C minimum).

Mechanical Compatibility: Lead spacing (0.394" / 10.00 mm), package type (Radial, Can - Snap-In), and mounting method (Through Hole).

Performance Characteristics: ESR values within acceptable range for the application, ripple current ratings at standard frequencies (120 Hz and 100 kHz / 20 kHz / 50 kHz).

Direct substitutes maintain identical electrical specifications and physical dimensions. Upgrade substitutes provide enhanced performance through higher temperature ratings (105°C vs. 85°C) or higher voltage ratings (220 V or 250 V vs. 200 V) while maintaining mechanical compatibility. Similar substitutes meet core electrical requirements but may have dimensional variations that require mechanical verification.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 120Hz	Lifetime @ Temp	Operating Temp	Height (Max)	Product Status
ECO-S2DP681DA	Panasonic	680 µF	200 V	268 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30.00 mm)	Obsolete
380LX681M200K022	Cornell Dubilier	680 µF	200 V	270 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.260" (32.00 mm)	Active
LLS2D681MELB	Nichicon	680 µF	200 V	—	3000 Hrs @ 85°C	-40°C ~ 85°C	0.984" (25.00 mm)	Active
SLPX681M200E3P3	Cornell Dubilier	680 µF	200 V	293 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30.00 mm)	Active
LGU2D681MELB	Nichicon	680 µF	200 V	—	3000 Hrs @ 105°C	-40°C ~ 105°C	1.181" (30.00 mm)	Active
LGW2E681MELB30	Nichicon	680 µF	250 V	—	3000 Hrs @ 105°C	-40°C ~ 105°C	1.181" (30.00 mm)	Active
LLS2E681MELB	Nichicon	680 µF	250 V	—	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30.00 mm)	Active
SLPX681M220E3P3	Cornell Dubilier	680 µF	220 V	293 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.181" (30.00 mm)	Active
380LQ681M200J022	Cornell Dubilier	680 µF	200 V	293 mOhm	2000 Hrs @ 85°C	-40°C ~ 85°C	1.260" (32.00 mm)	Active
380LX681M200H452	Cornell Dubilier	680 µF	200 V	270 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.850" (47.00 mm)	Active
380LX681M200J032	Cornell Dubilier	680 µF	200 V	270 mOhm	3000 Hrs @ 85°C	-40°C ~ 85°C	1.457" (37.00 mm)	Active

Engineering Selection Recommendations

Direct Substitutes (Preferred for Drop-In Replacement):

380LX681M200K022, LLS2D681MELB, and SLPX681M200E3P3 are active production parts meeting the core electrical specifications of the ECO-S2DP681DA. All three maintain 680 µF capacitance, 200 V voltage rating, and 3000-hour lifetime at 85°C. The 380LX681M200K022 and SLPX681M200E3P3 match the original height specification (1.181" / 30.00 mm), while LLS2D681MELB offers a more compact form factor at 0.984" (25.00 mm) height. All direct substitutes are RoHS3 compliant and REACH unaffected, supporting modern manufacturing requirements.

Upgrade Substitutes (Enhanced Performance):

LGU2D681MELB extends the operating temperature range to 105°C and provides 3000-hour lifetime at the elevated temperature, suitable for applications requiring higher thermal margin. LGW2E681MELB30 and LLS2E681MELB offer voltage ratings of 250 V and 220 V respectively, providing overvoltage protection while maintaining mechanical compatibility. SLPX681M220E3P3 combines 220 V rating with active production status.

Similar Substitutes (Dimensional Variation):

380LQ681M200J022, 380LX681M200H452, and 380LX681M200J032 meet electrical requirements but feature different physical dimensions. 380LQ681M200J022 has reduced lifetime (2000 Hrs @ 85°C) and should be evaluated against application requirements. 380LX681M200H452 and 380LX681M200J032 provide alternative height options (1.850" and 1.457" respectively) for space-constrained or space-available designs.

Frequently Asked Questions (FAQ)

Q: Can I use a 250 V rated capacitor in place of the 200 V ECO-S2DP681DA?

A: Yes. Higher voltage-rated capacitors (LGW2E681MELB30 at 250 V or LLS2E681MELB at 250 V) are electrically compatible and provide additional safety margin. The 680 µF capacitance and ±20% tolerance remain identical. Physical dimensions are maintained, ensuring mechanical fit.

Q: What is the difference between direct and upgrade substitutes?

A: Direct substitutes maintain all original specifications including voltage rating (200 V) and temperature rating (85°C). Upgrade substitutes enhance one or more parameters: LGU2D681MELB raises temperature rating to 105°C; LGW2E681MELB30 and LLS2E681MELB increase voltage rating to 250 V. Both categories maintain 680 µF capacitance and mechanical compatibility.

Q: Does the height difference between substitute parts affect compatibility?

A: Height variations must be evaluated against available board space and circuit layout constraints. LLS2D681MELB (0.984" height) is more compact; 380LX681M200H452 (1.850" height) requires additional clearance. Lead spacing remains constant at 0.394" (10.00 mm) across all substitutes, ensuring PCB footprint compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Direct substitutes 380LX681M200K022, LLS2D681MELB, and SLPX681M200E3P3 are RoHS3 compliant. Upgrade substitutes LGU2D681MELB, LGW2E681MELB30, LLS2E681MELB, and SLPX681M220E3P3 are also RoHS3 compliant. Similar substitute 380LQ681M200J022 is RoHS3 compliant; 380LX681M200H452 and 380LX681M200J032 are RoHS3 compliant.

Q: What is the significance of ESR (Equivalent Series Resistance) in capacitor selection?

A: ESR affects ripple current handling and heat generation. The original ECO-S2DP681DA specifies 268 mOhm @ 120Hz. Direct substitutes range from 270 mOhm (380LX681M200K022) to 293 mOhm (SLPX681M200E3P3). Slightly higher ESR values remain within acceptable operating parameters for general-purpose applications.

Q: Can I substitute a part with reduced lifetime rating?

A: 380LQ681M200J022 offers 2000 Hrs @ 85°C versus the original 3000 Hrs @ 85°C. This reduction must be evaluated against application duty cycle and expected service life. For applications requiring the full 3000-hour rating, direct substitutes with matching lifetime specifications are recommended.

Q: Are all substitutes available in active production?

A: Yes. All listed substitutes maintain active production status except the original ECO-S2DP681DA, which is obsolete. Active production status ensures long-term availability and supply chain stability for design support and production requirements.

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