ECO-S1HA392DA Equivalent & Substitute Parts

Part Overview

The ECO-S1HA392DA is a 3900 µF, 50 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, serving general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	3900 µF
Tolerance	±20%
Voltage Rating	50 V
ESR @ 120 Hz	64 mOhm
Lifetime @ 105°C	3000 Hrs
Operating Temperature	-40°C to 105°C
Ripple Current @ 120 Hz	2.2 A
Ripple Current @ 100 kHz	2.53 A
Lead Spacing	10.00 mm (0.394")
Case Diameter	30.00 mm (1.181")
Height (Seated)	27.00 mm (1.063")
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 electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 3900 µF
Tolerance: ±20%
Voltage Rating: 50 V
Lead Spacing: 10.00 mm
Package Type: Radial, Can - Snap-In
Mounting Type: Through Hole
Polarization: Polar
Operating Temperature Range: -40°C to 105°C

Compatible Variation Parameters:

ESR: Acceptable range 64–119 mOhm @ 120 Hz
Lifetime @ 105°C: Minimum 3000 hours (upgrades to 5000 hours acceptable)
Case Diameter: 25.00–30.00 mm
Height (Seated): 25.00–27.00 mm
Ripple Current @ 120 Hz: Minimum 1.9 A
Ripple Current @ High Frequency: Minimum 2.185 A

Parts are grouped as Direct Manufacturer Equivalents, Upgrades, Similar, or Parametric Equivalents based on how closely they match the original specification while maintaining functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Status	Capacitance	Voltage	ESR @ 120 Hz	Lifetime @ 105°C	Case Dia (mm)	Height (mm)	Ripple @ 120 Hz	RoHS
ECO-S1HA392DA	Panasonic	Obsolete	3900 µF	50 V	64 mOhm	3000 Hrs	30.00	27.00	2.2 A	—
381LX392M050K012	Cornell Dubilier	Active	3900 µF	50 V	—	3000 Hrs	30.00	27.00	2.2 A	ROHS3
SLP392M050E1P3	Cornell Dubilier	Active	3900 µF	50 V	119 mOhm	3000 Hrs	30.00	25.00	2.2 A	ROHS3
LGY1H392MELB25	Nichicon	Active	3900 µF	50 V	—	5000 Hrs	30.00	27.00	1.9 A	ROHS3
381LX392M050J032	Cornell Dubilier	Active	3900 µF	50 V	—	3000 Hrs	25.00	37.00	2.2 A	ROHS3
B41252C6398M	EPCOS - TDK	Active	3900 µF	50 V	—	2000 Hrs	30.00	27.00	2.54 A	ROHS3
LP392M050C7P3	Cornell Dubilier	Active	3900 µF	50 V	85 mOhm	1000 Hrs	25.00	40.00	1.97 A	ROHS3
SLP392M050A7P3	Cornell Dubilier	Active	3900 µF	50 V	119 mOhm	3000 Hrs	22.00	40.00	2.23 A	ROHS3
SLP392M050C3P3	Cornell Dubilier	Active	3900 µF	50 V	119 mOhm	3000 Hrs	25.00	30.00	2.2 A	ROHS3
LGU1H392MELB	Nichicon	Active	3900 µF	50 V	—	3000 Hrs	30.00	27.00	2.22 A	ROHS3

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Preferred for Drop-In Replacement):

381LX392M050K012 and LGU1H392MELB maintain identical case dimensions (30.00 mm diameter, 27.00 mm height) and lead spacing to the original ECO-S1HA392DA. Both are ROHS3 compliant active products with 3000-hour lifetime ratings at 105°C. These parts require no PCB layout modification and provide immediate functional compatibility.

Upgrade Option (Enhanced Reliability):

LGY1H392MELB25 from Nichicon extends the lifetime to 5000 hours at 105°C while maintaining identical external dimensions and lead spacing. This upgrade is suitable for applications requiring extended operational life. ROHS3 compliance and active product status ensure long-term availability.

Alternative Selections (Dimensional Variation):

SLP392M050C3P3 and SLP392M050E1P3 from Cornell Dubilier provide equivalent electrical performance with 3000-hour lifetimes and ROHS3 compliance. These parts feature reduced height (25.00–30.00 mm) compared to the original, requiring verification of available PCB clearance. ESR values of 119 mOhm remain within acceptable operating parameters.

Limited Compatibility (Reduced Lifetime):

B41252C6398M from EPCOS - TDK Electronics maintains identical case dimensions but specifies only 2000 hours lifetime at 105°C. Selection requires confirmation that reduced operational life meets application requirements.

Constrained Compatibility (Dimensional Mismatch):

LP392M050C7P3 and SLP392M050A7P3 feature reduced case diameters (22.00–25.00 mm) and increased heights (40.00 mm), requiring PCB redesign. LP392M050C7P3 additionally specifies only 1000 hours lifetime at 105°C. These parts are suitable only when PCB layout permits dimensional variation.

381LX392M050J032 presents a case diameter reduction to 25.00 mm with height increase to 37.00 mm, requiring layout verification before selection.

Frequently Asked Questions (FAQ)

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

A: Dimensional changes require PCB layout verification. Parts with reduced case diameter (22.00–25.00 mm) or increased height (37.00–40.00 mm) may not fit existing mounting holes or clearance zones. Confirm available space before selection. Direct equivalents with matching 30.00 mm diameter and 27.00 mm height eliminate this concern.

Q: What is the significance of ESR variation among substitute parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. The original part specifies 64 mOhm at 120 Hz. Substitute parts with ESR values up to 119 mOhm remain within acceptable operating range for general-purpose applications. Higher ESR values increase heat generation under ripple current stress; verify thermal management capability in high-ripple environments.

Q: Does lifetime rating affect part selection?

A: Lifetime rating indicates operational duration at maximum rated temperature (105°C). The original part specifies 3000 hours. Substitutes with equal or extended lifetime (3000–5000 hours) provide equivalent or improved reliability. Parts with reduced lifetime (2000 hours or less) require application review to confirm acceptable service intervals.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed are ROHS3 compliant. The original ECO-S1HA392DA does not specify RoHS status due to obsolete classification. ROHS3 compliance ensures compliance with current environmental regulations for new designs and procurement.

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

A: Direct equivalents match all critical electrical and mechanical parameters with identical case dimensions. Upgrades maintain compatibility while extending operational life or improving performance. Similar parts meet electrical specifications but vary in case dimensions or lifetime. Parametric equivalents satisfy electrical requirements with acceptable performance variation. Selection depends on PCB constraints and application requirements.

Q: Can I substitute a part with lower ripple current rating?

A: Ripple current rating indicates maximum AC current the capacitor can safely handle. The original part handles 2.2 A at 120 Hz. Substitutes with equal or higher ripple current ratings (2.2–2.79 A at 120 Hz) are acceptable. Parts with lower ratings (1.9–1.97 A) require verification that actual circuit ripple current does not exceed the substitute's specification.

Q: Which substitute offers the best long-term availability?

A: All listed substitute parts carry active product status, indicating current manufacturing and distribution. Cornell Dubilier Electronics (SLP392M050C3P3, 381LX392M050K012) and Nichicon (LGU1H392MELB, LGY1H392MELB25) maintain established supply chains. Verify with component distributors for regional availability and lead times specific to your procurement timeline.

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