ECA-0JM331I Equivalent & Substitute Parts

Part Overview

The ECA-0JM331I is a 330 µF, 6.3 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 2000 hours at 85°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently in active production status with ROHS3 compliance.

Equivalent and substitute parts are necessary when the original component becomes unavailable, when design requirements demand enhanced performance characteristics such as higher voltage ratings or extended temperature ranges, or when alternative manufacturers' components offer superior ripple current handling or operational longevity at elevated temperatures.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	6.3 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ 10 kHz	510 mA
Lead Spacing	0.098" (2.50 mm)
Case Diameter	0.248" (6.30 mm)
Height (Seated Max)	0.480" (12.20 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ECA-0JM331I is determined by the following criteria:

Primary Compatibility Parameters:

Capacitance value: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Lead spacing: 0.098" (2.50 mm) (exact match required)
Case diameter: 0.248" (6.30 mm) (exact match required)
Mounting type: Through Hole (exact match required)
Package configuration: Radial, Can (exact match required)

Allowable Variation Parameters:

Voltage rating: May be equal to or higher than 6.3 V
Operating temperature range: May be equal to or extended beyond -40°C ~ 85°C
Lifetime @ temperature: May be equal to or exceed 2000 Hrs @ 85°C
Ripple current: May be equal to or exceed specified values

Substitute parts are grouped into two categories: direct equivalents at 6.3 V (UKA0J331MED1TD, UPS0J331MED1TD, UPW0J331MED1TD) and upgraded voltage-rated alternatives (ECA-1AM331I at 10 V, UFW1A331MED1TD at 10 V, UVK1C331MED1TD at 16 V). All substitute parts maintain identical physical dimensions and lead spacing, ensuring mechanical compatibility with existing PCB layouts.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 10 kHz	Lead Spacing	Case Diameter	Height (Max)	Product Status	RoHS Status
ECA-0JM331I	Panasonic	330 µF	6.3 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	510 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.480" (12.20 mm)	Active	ROHS3
ECA-1AM331I	Panasonic	330 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	561 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.480" (12.20 mm)	Active	ROHS3
UFW1A331MED1TD	Nichicon	330 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	405 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
UKA0J331MED1TD	Nichicon	330 µF	6.3 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	292.5 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
UPS0J331MED1TD	Nichicon	330 µF	6.3 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	250 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
UPW0J331MED1TD	Nichicon	330 µF	6.3 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	290 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
UVK1C331MED1TD	Nichicon	330 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	480 mA	0.098" (2.50 mm)	0.248" (6.30 mm)	0.492" (12.50 mm)	Obsolete	ROHS3

Engineering Selection Recommendations

For Active Production Designs: ECA-1AM331I (Panasonic, 10 V) is the preferred substitute when the original ECA-0JM331I becomes unavailable. Both components are manufactured by Panasonic, share identical physical dimensions and lead spacing, and maintain the same operational temperature range. The 10 V rating provides voltage margin above the 6.3 V specification while delivering superior ripple current performance (561 mA vs. 510 mA @ 10 kHz). Both parts carry ROHS3 compliance and active product status.

For Extended Temperature Applications: UKA0J331MED1TD, UPS0J331MED1TD, or UPW0J331MED1TD (Nichicon) are suitable when designs require operation beyond the standard -40°C ~ 85°C range. These components extend the operating temperature to -55°C ~ 105°C and provide 2000-hour lifetime at 105°C. All three maintain 6.3 V voltage rating and identical lead spacing. Note that these parts are obsolete and should be selected only when extended temperature performance is a design requirement.

For Higher Voltage Margin Applications: UFW1A331MED1TD (Nichicon, 10 V) or UVK1C331MED1TD (Nichicon, 16 V) provide increased voltage headroom. Both are obsolete products but maintain mechanical compatibility. UVK1C331MED1TD offers the highest voltage rating (16 V) with ripple current performance (480 mA @ 10 kHz) comparable to the original specification.

All substitute parts maintain ROHS3 compliance and are suitable for through-hole PCB assembly without modification to existing footprints.

Frequently Asked Questions (FAQ)

Q: Can I use ECA-1AM331I as a direct replacement for ECA-0JM331I? A: Yes. ECA-1AM331I is mechanically and electrically compatible. It maintains identical lead spacing (0.098"), case diameter (0.248"), and height (0.480"), with the same capacitance and tolerance. The higher voltage rating (10 V vs. 6.3 V) provides additional safety margin and does not affect circuit operation in applications designed for 6.3 V or lower.

Q: What is the difference between the Panasonic and Nichicon substitute options? A: Panasonic ECA-1AM331I is currently in active production, while Nichicon alternatives (UFW1A331MED1TD, UKA0J331MED1TD, UPS0J331MED1TD, UPW0J331MED1TD, UVK1C331MED1TD) are obsolete. For new designs, Panasonic ECA-1AM331I is recommended. Nichicon parts are suitable only when specific performance characteristics (extended temperature range or higher voltage rating) are required and availability can be confirmed.

Q: Will the slightly taller Nichicon parts (0.492" vs. 0.480") cause PCB assembly issues? A: The 0.012" (0.30 mm) height difference is within typical PCB design tolerances and should not cause assembly or clearance issues. However, verify clearance in your specific PCB layout, particularly if components are mounted near low-profile shields or connectors.

Q: Which substitute should I select for high-ripple-current applications? A: ECA-1AM331I delivers the highest ripple current performance at 561 mA @ 10 kHz, exceeding the original specification of 510 mA. This makes it the optimal choice for applications with demanding ripple current requirements.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original ECA-0JM331I specification.

Q: Can I use UKA0J331MED1TD, UPS0J331MED1TD, or UPW0J331MED1TD interchangeably? A: These three Nichicon parts are electrically interchangeable at the 6.3 V, 330 µF specification level. All three extend the operating temperature range to -55°C ~ 105°C and provide 2000-hour lifetime at 105°C. Selection between them should be based on ripple current requirements and impedance specifications for your application. UPW0J331MED1TD offers the lowest impedance (250 mOhms) and highest ripple current at 100 kHz (290 mA).

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