ECO-S1HA332BA Equivalent & Substitute Parts

Part Overview

The Panasonic ECO-S1HA332BA is a 3300 µF, 50 V aluminum electrolytic capacitor in radial, can snap-in package with through-hole mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part delivers 70 mOhm ESR at 120 Hz with a 3000-hour lifetime rating at 105°C, suitable for general-purpose applications requiring stable capacitance and low ripple current handling.

Key Parameters

Parameter	Value
Capacitance	3300 µF
Tolerance	±20%
Voltage Rating	50 V
ESR @ 120 Hz	70 mOhm
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-40°C to 105°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.866" (22.00 mm)
Height (Seated Max)	1.457" (37.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can - Snap-In
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters: Capacitance (3300 µF), tolerance (±20%), and voltage rating (50 V) must match exactly. These parameters define functional compatibility in the circuit.

Mechanical Parameters: Lead spacing (10.00 mm), mounting type (through hole), and package configuration (radial, can snap-in) must be identical to ensure PCB compatibility without redesign.

Thermal & Reliability Parameters: Operating temperature range (-40°C to 105°C) and lifetime rating (3000 Hrs @ 105°C minimum) establish performance boundaries. Parts with lower lifetime ratings or narrower temperature ranges are classified as similar rather than direct equivalents.

Electrical Performance: ESR, ripple current ratings, and frequency response characteristics are secondary selection criteria when primary parameters match.

Substitute parts are grouped as follows:

Direct Manufacturer Equivalent: SLP332M050A5P3 (Cornell Dubilier) — matches all core parameters with active product status
Upgrade Option: LGY1H332MELZ35 (Nichicon) — exceeds lifetime rating (5000 Hrs vs. 3000 Hrs)
Similar Alternatives: 381LX332M050J022, B41252A6338M000, LP332M050C3P3, LP332M050C5P3, LP332M050E3P3, SLP332M050C3P3, LGU1H332MELZ — meet core electrical and mechanical parameters with variations in case diameter, height, or lifetime

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR @ 120 Hz	Lifetime @ 105°C	Case Dia (mm)	Height (mm)	Product Status	RoHS Status
ECO-S1HA332BA	Panasonic	3300 µF	50 V	70 mOhm	3000 Hrs	22.00	37.00	Obsolete	—
SLP332M050A5P3	Cornell Dubilier	3300 µF	50 V	141 mOhm	3000 Hrs	22.00	35.00	Active	ROHS3 Compliant
LGY1H332MELZ35	Nichicon	3300 µF	50 V	—	5000 Hrs	22.00	37.00	Active	ROHS3 Compliant
381LX332M050J022	Cornell Dubilier	3300 µF	50 V	—	3000 Hrs	25.00	32.00	Active	ROHS3 Compliant
B41252A6338M000	EPCOS - TDK Electronics	3300 µF	50 V	—	2000 Hrs	22.00	37.00	Active	ROHS3 Compliant
LP332M050C3P3	Cornell Dubilier	3300 µF	50 V	101 mOhm	1000 Hrs	25.00	30.00	Active	ROHS3 Compliant
LP332M050C5P3	Cornell Dubilier	3300 µF	50 V	101 mOhm	1000 Hrs	25.00	35.00	Active	ROHS3 Compliant
LP332M050E3P3	Cornell Dubilier	3300 µF	50 V	101 mOhm	1000 Hrs	30.00	30.00	Active	ROHS3 Compliant
SLP332M050C3P3	Cornell Dubilier	3300 µF	50 V	141 mOhm	3000 Hrs	25.00	30.00	Active	ROHS3 Compliant
LGU1H332MELZ	Nichicon	3300 µF	50 V	—	3000 Hrs	22.00	37.00	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (No PCB Modification Required):

SLP332M050A5P3 and LGU1H332MELZ are the primary candidates. Both maintain identical lead spacing (10.00 mm), case diameter (22.00 mm), and height within 2 mm of the original. SLP332M050A5P3 preserves the 3000-hour lifetime specification. LGY1H332MELZ35 offers extended reliability with 5000-hour lifetime while maintaining identical mechanical footprint. All three are active products with ROHS3 compliance.

Space-Constrained Applications:

381LX332M050J022 and SLP332M050C3P3 reduce height to 30-32 mm, suitable for designs with vertical clearance limitations. Both maintain 3000-hour lifetime ratings and active product status. Case diameter increases to 25.00 mm; verify PCB layout compatibility.

Cost-Optimized Selection:

B41252A6338M000 (EPCOS - TDK Electronics) matches the original footprint exactly but specifies 2000-hour lifetime at 105°C. Selection requires confirmation that reduced lifetime meets application requirements.

Lower-Reliability Applications:

LP332M050C3P3, LP332M050C5P3, and LP332M050E3P3 (Cornell Dubilier LP series) provide 1000-hour lifetime ratings. These are suitable only for non-critical applications where extended thermal endurance is not required. Case diameter increases to 25-30 mm.

All recommended substitutes carry ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements.

Frequently Asked Questions (FAQ)

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

A: Case diameter changes require PCB layout verification. The original ECO-S1HA332BA uses 22.00 mm diameter. Substitutes with 25.00 mm or 30.00 mm diameters fit standard snap-in footprints but may require clearance confirmation around adjacent components. Lead spacing (10.00 mm) remains constant across all options.

Q: What is the difference between direct equivalents and similar alternatives?

A: Direct equivalents (SLP332M050A5P3, LGU1H332MELZ) match all critical parameters including case diameter and height. Similar alternatives meet electrical and mechanical core requirements but vary in case dimensions or lifetime ratings. Selection depends on available PCB space and reliability requirements.

Q: Does the ECO-S1HA332BA have a direct drop-in replacement?

A: LGU1H332MELZ (Nichicon LGU series) is the closest match, maintaining identical case diameter (22.00 mm) and height (37.00 mm) with matching lead spacing. It is an active product with ROHS3 compliance and exceeds the original 3000-hour lifetime specification.

Q: Why do some substitutes have higher ESR values?

A: ESR (equivalent series resistance) varies by manufacturer design and series. Higher ESR (141 mOhm vs. 70 mOhm) increases heat dissipation but remains acceptable for general-purpose applications. Applications requiring low ESR should prioritize SLP332M050A5P3 or verify ripple current specifications against circuit requirements.

Q: Are all substitutes RoHS compliant?

A: Yes. All active substitute parts listed carry ROHS3 compliance certification. The original ECO-S1HA332BA (obsolete) does not specify RoHS status.

Q: What is the minimum lifetime rating I should accept?

A: The original part specifies 3000 hours at 105°C. Substitutes with 3000-hour or higher ratings (LGY1H332MELZ35 at 5000 hours) maintain equivalent thermal endurance. Parts rated at 2000 hours (B41252A6338M000) or 1000 hours (LP series) represent reduced reliability and require application-specific justification.

Q: Can I substitute based on capacitance and voltage alone?

A: No. Mechanical compatibility is equally critical. Lead spacing, case diameter, and height must accommodate the PCB footprint. Electrical parameters (ESR, ripple current, lifetime) determine performance under operating conditions. All three categories must align with application requirements.

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