EKMQ350ELL331MJC5S Equivalent & Substitute Parts

Part Overview

The EKMQ350ELL331MJC5S is a 330 µF, 35 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMQ series. This radial, through-hole component is rated for 2000 hours at 105°C and is designed for general-purpose applications. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical dimensions are required for design flexibility, inventory management, or component availability.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage - Rated	35 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Lead Spacing	0.197" (5.00mm)
Size / Dimension	0.394" Dia (10.00mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of aluminum electrolytic capacitors is determined by strict equivalence in the following parameters:

Critical Electrical Parameters:

Capacitance value: 330 µF
Rated voltage: 35 V
Tolerance: ±20%
Lifetime rating: 2000 Hrs @ 105°C
Operating temperature range: -55°C ~ 105°C

Critical Mechanical Parameters:

Lead spacing: 0.197" (5.00mm)
Diameter: 0.394" (10.00mm)
Mounting type: Through Hole
Package type: Radial, Can

Compliance Requirements:

RoHS3 compliance
REACH unaffected status

All identified substitute parts meet these criteria. Variations in height dimension (within 0.020" tolerance) and ripple current specifications at specific frequencies do not preclude substitution when all critical parameters align.

Parameter Comparison

Parameter	EKMQ350ELL331MJC5S (Chemi-Con)	ECA-1VHG331 (Panasonic)	UKA1V331MPD (Nichicon)	EEU-HD1V331 (Panasonic)	UVY1V331MPD (Nichicon)
Manufacturer	Chemi-Con	Panasonic Electronic Components	Nichicon	Panasonic Electronic Components	Nichicon
Series	KMQ	NHG-A	UKA	HD	UVY
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF
Voltage - Rated	35 V	35 V	35 V	35 V	35 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Lifetime @ Temp.	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size / Dimension	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)
Height - Seated (Max)	0.551" (14.00mm)	0.531" (13.50mm)	0.551" (14.00mm)	0.551" (14.00mm)	0.551" (14.00mm)
Ripple Current @ 120 Hz	350 mA	350 mA	350 mA	350 mA	350 mA
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Product Status	Active	Active	Not For New Designs	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Selection (Active Status):

ECA-1VHG331 (Panasonic NHG-A series) and EEU-HD1V331 (Panasonic HD series) are recommended as primary substitutes. Both maintain Active product status, ensuring long-term availability and manufacturer support. These parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Secondary Selection (Legacy Status):

UKA1V331MPD (Nichicon UKA series) and UVY1V331MPD (Nichicon UVY series) are classified as "Not For New Designs." These parts are electrically and mechanically equivalent but should be used only for replacement or maintenance of existing designs where component continuity is required.

Compliance Verification:

All substitute parts carry ROHS3 compliance and REACH unaffected status, matching the original EKMQ350ELL331MJC5S specification. No additional compliance documentation is required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can ECA-1VHG331 be used as a direct replacement for EKMQ350ELL331MJC5S?

A: Yes. ECA-1VHG331 meets all critical electrical and mechanical parameters: 330 µF capacitance, 35 V rating, ±20% tolerance, 2000 Hrs @ 105°C lifetime, -55°C to 105°C operating range, 5.00mm lead spacing, and 10.00mm diameter. The height difference of 0.020" (0.50mm) does not affect PCB compatibility for through-hole mounting.

Q: What is the difference between "Active" and "Not For New Designs" product status?

A: Active status indicates the manufacturer continues production and provides full technical support. "Not For New Designs" indicates the manufacturer has discontinued active development but maintains limited production for existing customer requirements. For new circuit designs, Active status parts are preferred.

Q: Are there electrical performance differences between the substitute parts?

A: All substitute parts share identical capacitance (330 µF), voltage rating (35 V), tolerance (±20%), and lifetime specification (2000 Hrs @ 105°C). Ripple current specifications at 120 Hz are identical (350 mA). Minor variations in ripple current at high frequencies (10 kHz vs. 100 kHz) do not affect general-purpose application performance.

Q: Can these capacitors be used interchangeably on the same PCB?

A: Yes, for through-hole mounting applications. All parts share identical lead spacing (5.00mm) and diameter (10.00mm). Height variations (13.50mm to 14.00mm) are within standard PCB clearance tolerances and do not require design modification.

Q: Which substitute part has the best long-term availability?

A: ECA-1VHG331 and EEU-HD1V331, both from Panasonic with Active status, offer the best long-term availability and manufacturer support. Current inventory levels are 22,199 pcs and 1,470 pcs respectively.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification and REACH unaffected status, matching the original EKMQ350ELL331MJC5S specification.

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