ECO-S2AP681BA Equivalent & Substitute Parts

Part Overview

The ECO-S2AP681BA is a 680 µF, 100 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Panasonic Electronic Components. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. 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
Tolerance	±20%
Voltage - Rated	100 V
ESR (Equivalent Series Resistance)	317 mOhm @ 120 Hz
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility for the ECO-S2AP681BA is determined by the following mandatory parameters:

Capacitance: 680 µF (exact match required)
Voltage Rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Package / Case: 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)

All three substitute parts meet these core electrical and mechanical parameters. Variations in ESR, lifetime ratings, and operating temperature ranges are permitted within the scope of general-purpose capacitor applications, provided the rated voltage and capacitance remain unchanged.

Parameter Comparison

Parameter	ECO-S2AP681BA (Panasonic)	380LX681M100J202 (CDE)	B41505A9687M000 (EPCOS - TDK)	SLP681M100A1P3 (CDE)
Capacitance	680 µF	680 µF	680 µF	680 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage - Rated	100 V	100 V	100 V	100 V
ESR	317 mOhm @ 120 Hz	390 mOhm	146 mOhm @ 100 Hz	390 mOhm
Lifetime @ Temperature	3000 Hrs @ 85°C	3000 Hrs @ 85°C	5000 Hrs @ 105°C	3000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Size / Dimension (Diameter)	0.866" (22.00 mm)	0.984" (25.00 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)
Height - Seated (Max)	0.984" (25.00 mm)	0.866" (22.00 mm)	1.457" (37.00 mm)	0.984" (25.00 mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing status, providing long-term procurement availability compared to the obsolete ECO-S2AP681BA. Selection among the substitutes depends on physical space constraints and thermal operating requirements:

380LX681M100J202 (Cornell Dubilier Electronics): Maintains identical thermal specifications (3000 Hrs @ 85°C) and operating temperature range (-40°C ~ 85°C) to the original part. Physical dimensions differ in diameter (0.984" vs. 0.866") and height (0.866" vs. 0.984"), requiring PCB layout verification. ROHS3 compliant.

B41505A9687M000 (EPCOS - TDK Electronics): Offers superior ESR performance (146 mOhm @ 100 Hz) and extended thermal rating (5000 Hrs @ 105°C) with expanded operating temperature range (-40°C ~ 105°C). Height dimension of 1.457" exceeds the original part, necessitating clearance verification in confined spaces. ROHS3 compliant.

SLP681M100A1P3 (Cornell Dubilier Electronics): Maintains physical dimensions matching the original part (0.866" diameter, 0.984" height) with extended operating temperature range (-40°C ~ 105°C). ESR specification (390 mOhm) is higher than the original. ROHS3 compliant.

All substitute parts carry REACH Unaffected or REACH Affected status and share the same ECCN (EAR99) and HTSUS classification as the original component.

Frequently Asked Questions (FAQ)

Q: Can the 380LX681M100J202 be used as a direct replacement in existing PCB layouts?

A: Physical dimensions differ. The 380LX681M100J202 has a larger diameter (0.984" vs. 0.866") and reduced height (0.866" vs. 0.984"). PCB layout verification is required to confirm adequate spacing around the component footprint and clearance above the board surface.

Q: Which substitute offers the best performance characteristics?

A: The B41505A9687M000 provides the lowest ESR (146 mOhm @ 100 Hz) and longest thermal lifetime (5000 Hrs @ 105°C). However, its height of 1.457" may not fit in space-constrained applications. The SLP681M100A1P3 maintains original physical dimensions while offering extended temperature range.

Q: Are all substitutes RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant, meeting current environmental regulations for lead-free manufacturing.

Q: What is the impact of ESR differences on circuit performance?

A: ESR affects ripple current handling and heat dissipation. The original part specifies 317 mOhm @ 120 Hz. The B41505A9687M000 (146 mOhm) provides lower impedance, while the 380LX681M100J202 and SLP681M100A1P3 (both 390 mOhm) have slightly higher impedance. Selection depends on ripple current requirements in the specific application.

Q: Can substitutes be used in applications requiring the original -40°C ~ 85°C temperature range?

A: Yes. All substitutes support the original operating temperature range. The 380LX681M100J202 matches this range exactly. The B41505A9687M000 and SLP681M100A1P3 extend the upper limit to 105°C, providing additional thermal margin without compromising lower-temperature performance.

Q: What is the lead spacing requirement, and do all substitutes meet it?

A: Lead spacing of 0.394" (10.00 mm) is required for through-hole PCB compatibility. All three substitutes maintain this specification, ensuring mechanical compatibility with existing PCB designs.

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