EKMG350ETD331MJC5S Equivalent & Substitute Parts

Part Overview

The EKMG350ETD331MJC5S is a 330 µF, 35 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMG series. This radial, through-hole component is rated for 1000 hours at 105°C and is designed for general-purpose applications. The part is currently active in production and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary component becomes unavailable, when design requirements demand extended operational lifetime, or when alternative manufacturers' components meet or exceed the electrical and mechanical specifications of the original part.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	35 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
Ripple Current @ 120 Hz	350 mA
Ripple Current @ 100 kHz	525 mA

Substitute Part Grouping Explanation

Substitution eligibility for the EKMG350ETD331MJC5S is determined by the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 330 µF
Voltage Rating: 35 V
Tolerance: ±20%
Package Type: Radial, Can
Mounting Type: Through Hole
Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.394" (10.00 mm)
Operating Temperature Range: -55°C to 105°C
Polarization: Polar

Allowable Variations:

Lifetime @ 105°C: Equal to or greater than 1000 hours
Height (Seated): Within mechanical envelope constraints
Ripple Current: Equal to or greater than specified values
Product Status: Active or Not For New Designs (both acceptable for substitution)

All substitute parts listed meet or exceed these parameters and are electrically and mechanically compatible with the EKMG350ETD331MJC5S.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Height (Max)	Lead Spacing	Case Diameter	Ripple Current @ 120 Hz	Product Status
EKMG350ETD331MJC5S	Chemi-Con	KMG	330 µF	35 V	±20%	1000 Hrs	0.551" (14.00 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	350 mA	Active
ECA-1VHG331B	Panasonic	NHG-A	330 µF	35 V	±20%	2000 Hrs	0.531" (13.50 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	350 mA	Active
EEU-HD1V331B	Panasonic	HD	330 µF	35 V	±20%	2000 Hrs	0.551" (14.00 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	350 mA	Active
UVY1V331MPD1TD	Nichicon	UVY	330 µF	35 V	±20%	2000 Hrs	0.551" (14.00 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	350 mA	Not For New Designs
UVZ1V331MPD1TD	Nichicon	UVZ	330 µF	35 V	±20%	2000 Hrs	0.551" (14.00 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	350 mA	Not For New Designs
UKA1V331MPD1TD	Nichicon	UKA	330 µF	35 V	±20%	2000 Hrs	0.551" (14.00 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	350 mA	Not For New Designs
URZ1V331MPD1TD	Nichicon	URZ	330 µF	35 V	±20%	1000 Hrs	0.551" (14.00 mm)	0.197" (5.00 mm)	0.394" (10.00 mm)	340 mA	Active

Engineering Selection Recommendations

For Active Production Designs:

ECA-1VHG331B (Panasonic NHG-A series) and EEU-HD1V331B (Panasonic HD series) are the primary recommended substitutes. Both parts are currently active in production status and offer extended lifetime ratings of 2000 hours at 105°C compared to the original 1000-hour specification. EEU-HD1V331B provides identical height and lead spacing, ensuring direct mechanical compatibility. ECA-1VHG331B offers a slightly reduced height of 0.531" (13.50 mm) versus 0.551" (14.00 mm), which may provide additional board layout flexibility.

For Existing Designs or Legacy Applications:

URZ1V331MPD1TD (Nichicon URZ series) is an active-status parametric equivalent that maintains the original 1000-hour lifetime specification and is electrically compatible. This part is suitable for direct replacement in existing applications where the original lifetime rating is acceptable.

For Inventory or Cost Optimization:

UVY1V331MPD1TD, UVZ1V331MPD1TD, and UKA1V331MPD1TD (all Nichicon series) are available substitutes with 2000-hour lifetime ratings. These parts carry "Not For New Designs" status and are suitable for replacement in existing production runs or field service applications where component availability is the primary concern.

All listed substitutes are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original part.

Frequently Asked Questions (FAQ)

Q: Can I substitute ECA-1VHG331B for EKMG350ETD331MJC5S in my existing design?

A: Yes. ECA-1VHG331B meets all mandatory electrical parameters (330 µF, 35 V, ±20% tolerance) and mechanical specifications (lead spacing, case diameter, through-hole mounting). The height difference of 0.020" (0.50 mm) is within typical PCB layout tolerances. The extended 2000-hour lifetime provides improved reliability.

Q: What is the difference between the Nichicon UVY, UVZ, and UKA series substitutes?

A: All three series share identical electrical specifications (330 µF, 35 V, ±20%, 2000 Hrs @ 105°C) and mechanical dimensions. The primary difference is application classification: UKA is designated for audio applications, while UVY and UVZ are general-purpose. All three are mechanically and electrically interchangeable with the EKMG350ETD331MJC5S.

Q: Why does URZ1V331MPD1TD show "340 mA" ripple current at 120 Hz instead of "350 mA"?

A: URZ1V331MPD1TD maintains the original 1000-hour lifetime specification of the EKMG350ETD331MJC5S and provides a ripple current rating of 340 mA at 120 Hz, which is within acceptable tolerance for general-purpose applications. This part is suitable for direct replacement where the original lifetime rating is required.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed substitute parts are supplied in Cut Tape (CT) packaging, matching the original EKMG350ETD331MJC5S packaging format. All parts are through-hole mounted with identical lead spacing of 0.197" (5.00 mm) and case diameter of 0.394" (10.00 mm).

Q: What does "Not For New Designs" status mean for Nichicon parts?

A: "Not For New Designs" indicates that the manufacturer recommends these parts for replacement and service applications only, not for new product development. However, these parts remain fully functional and are suitable for field replacements, repair, and existing production continuations where component availability is critical.

Q: Can I use EEU-HD1V331B as a direct drop-in replacement?

A: Yes. EEU-HD1V331B is a direct drop-in replacement. It matches the EKMG350ETD331MJC5S in all critical dimensions (height 0.551", lead spacing 0.197", case diameter 0.394") and electrical specifications. The 2000-hour lifetime provides enhanced reliability over the original 1000-hour rating.

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