ECO-S1KP392DA Equivalent & Substitute Parts

Part Overview

The ECO-S1KP392DA is a 3900 µF, 80 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the TS-UP series. This radial, can-style snap-in capacitor is rated for general purpose applications with a 3000-hour lifetime at 85°C and an operating temperature range of -40°C to 85°C. The part is currently obsolete, making equivalent substitutes necessary for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Capacitance	3900 µF
Voltage Rating	80 V
Tolerance	±20%
ESR @ 120Hz	77 mOhm
Lifetime @ 85°C	3000 Hrs
Operating Temperature	-40°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.181" (30.00 mm)
Height	1.378" (35.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution for the ECO-S1KP392DA is determined by strict equivalence across the following parameters:

Capacitance: 3900 µF (exact match required)
Voltage Rating: 80 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime: 3000 Hrs @ 85°C (minimum requirement)
Operating Temperature: -40°C ~ 85°C (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Mounting Type: Through Hole (exact match required)

Substitute parts are classified into three categories:

Direct Manufacturer Substitutes meet all electrical and mechanical parameters with identical or superior specifications. These parts are fully interchangeable with the original component.

Similar Manufacturer Substitutes meet core electrical parameters but may have minor dimensional variations (case diameter or height) that remain within acceptable mechanical tolerances for snap-in mounting applications.

Parametric Equivalents satisfy all critical electrical specifications and physical mounting requirements, providing functional equivalence for circuit operation.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	ESR @ 120Hz	Lifetime @ 85°C	Case Dia	Height	Status
ECO-S1KP392DA	Panasonic	3900 µF	80 V	±20%	77 mOhm	3000 Hrs	1.181" (30 mm)	1.378" (35 mm)	Obsolete
380LX392M080K032	Cornell Dubilier Electronics	3900 µF	80 V	±20%	80 mOhm	3000 Hrs	1.181" (30 mm)	1.457" (37 mm)	Active
80USG3900MEFCSN30X35	Rubycon	3900 µF	80 V	±20%	—	3000 Hrs	1.181" (30 mm)	1.457" (37 mm)	Active
B41231C398M	EPCOS - TDK Electronics	3900 µF	80 V	±20%	—	2000 Hrs	1.181" (30 mm)	1.457" (37 mm)	Active
380LX392M080J452	Cornell Dubilier Electronics	3900 µF	80 V	±20%	80 mOhm	3000 Hrs	0.984" (25 mm)	1.850" (47 mm)	Active
SLPX392M080C4P3	Cornell Dubilier Electronics	3900 µF	80 V	±20%	85 mOhm	3000 Hrs	0.984" (25 mm)	1.772" (45 mm)	Active
SLPX392M080E5P3	Cornell Dubilier Electronics	3900 µF	80 V	±20%	85 mOhm	3000 Hrs	1.181" (30 mm)	1.378" (35 mm)	Active

Engineering Selection Recommendations

First Priority: SLPX392M080E5P3 (Cornell Dubilier Electronics)

This parametric equivalent provides the closest dimensional match to the original ECO-S1KP392DA, with identical case diameter (1.181" / 30 mm) and height (1.378" / 35 mm). It maintains 3000-hour lifetime at 85°C, meets all electrical specifications, and carries ROHS3 compliance. Inventory availability is highest at 2209 units.

Second Priority: 380LX392M080K032 (Cornell Dubilier Electronics)

This direct manufacturer substitute meets all core electrical parameters with 80 mOhm ESR and 3000-hour lifetime. Height is slightly increased to 1.457" (37 mm), which remains compatible with snap-in mounting applications. ROHS3 compliant with 838 units in stock.

Third Priority: 80USG3900MEFCSN30X35 (Rubycon)

This direct substitute maintains identical case dimensions to the original part (1.181" × 1.457"). It delivers 3000-hour lifetime and meets all electrical specifications. ROHS3 compliant with 766 units available.

Alternative: B41231C398M (EPCOS - TDK Electronics)

This part meets all dimensional and electrical requirements but has a reduced lifetime specification of 2000 hours at 85°C compared to the original 3000 hours. Use only when lifetime reduction is acceptable for the application. ROHS3 compliant with 1113 units in stock.

Not Recommended for Direct Substitution: 380LX392M080J452 and SLPX392M080C4P3

These similar substitutes have reduced case diameter (0.984" / 25 mm) and increased height (1.850" / 47 mm and 1.772" / 45 mm respectively). While electrically equivalent, the dimensional changes may create mechanical fit issues in applications designed for the original 30 mm diameter snap-in form factor.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different case diameter?

A: Case diameter affects the snap-in mounting interface. The original ECO-S1KP392DA uses a 1.181" (30 mm) diameter can. Substitutes with 0.984" (25 mm) diameter may not seat properly in fixtures designed for the original part. Verify mechanical compatibility with your specific mounting hardware before selection.

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

A: ESR affects ripple current handling and heat dissipation. The original part specifies 77 mOhm @ 120Hz. Substitutes with slightly higher ESR (80-85 mOhm) remain functionally equivalent for general purpose applications but may generate marginally more heat under high ripple current conditions. For noise-sensitive or high-current applications, prioritize parts with ESR closest to the original specification.

Q: Does lifetime rating affect substitution eligibility?

A: Yes. The original ECO-S1KP392DA is rated for 3000 hours at 85°C. Substitutes must meet or exceed this specification. The B41231C398M part has a reduced 2000-hour rating and should only be used if your application does not require the full 3000-hour lifetime.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed carry ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing.

Q: What is the difference between "Direct," "Similar," and "Parametric Equivalent" classifications?

A: Direct substitutes match all electrical and mechanical specifications. Similar substitutes meet electrical requirements but have minor dimensional variations. Parametric equivalents satisfy all critical electrical specifications and mounting requirements. For the ECO-S1KP392DA, SLPX392M080E5P3 is the closest parametric equivalent with identical dimensions.

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

A: All listed substitutes are electrically equivalent and can be used interchangeably within the same circuit. However, for consistency and to simplify inventory management, use a single substitute part number across your design.

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