Equivalent & Substitute Parts for UTM1A331MHD

Part Overview

The Nichicon UTM1A331MHD is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 2000 hours at 85°C. This component is classified as obsolete, making substitute parts necessary for ongoing production and maintenance applications. The UTM series has been discontinued, requiring engineers to identify functionally compatible alternatives that maintain electrical performance within the application's design parameters.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Size / Dimension	0.492" Dia (12.50 mm)
Height - Seated (Max)	1.024" (26.00 mm)
Mounting Type	Through Hole
Operating Temperature	-40°C ~ 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C
Polarization	Polar
Applications	General Purpose

Substitute Part Grouping Explanation

Substitution for the UTM1A331MHD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance value: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Package type: Radial, Can (exact match required)
Lead spacing: 0.197" (5.00 mm) (exact match required)
Size / Dimension: 0.492" Dia (12.50 mm) (exact match required)
Mounting type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Secondary Substitution Criteria:

Voltage rating: Equal to or greater than 10 V
Operating temperature range: Must encompass or exceed -40°C ~ 85°C
Lifetime @ temperature: Equal to or greater than 2000 Hrs @ 85°C

All substitute parts listed meet these criteria. Voltage ratings above 10 V provide design margin and are acceptable for direct substitution in applications designed for 10 V operation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Lead Spacing	Size / Dimension	Height (Max)	Operating Temp	Lifetime @ Temp	Product Status
UTM1A331MHD	Nichicon	330 µF	10 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.024" (26.00 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Obsolete
UPJ1J331MHD	Nichicon	330 µF	63 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	5000 Hrs @ 105°C	Not For New Designs
100PX330MEFC12.5X25	Rubycon	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	2000 Hrs @ 105°C	Active
337CKE100M	Cornell Dubilier / Illinois Capacitor	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 105°C	2000 Hrs @ 105°C	Active
337CKS100M	Cornell Dubilier / Illinois Capacitor	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active
EGXF800ELL331MK25S	Chemi-Con	330 µF	80 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 125°C	3000 Hrs @ 125°C	Active
EKMQ101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	2000 Hrs @ 105°C	Active
EKMQ101ETD331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	2000 Hrs @ 105°C	Active
EKZE800ELL331MK25S	Chemi-Con	330 µF	80 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 105°C	5000 Hrs @ 105°C	Active
ESMG101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active
ESMQ101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" Dia (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active

Engineering Selection Recommendations

Primary Recommendation for New Designs:

For applications requiring direct replacement of the UTM1A331MHD, select from active product status components. The Chemi-Con EKMQ101ELL331MK25S, EKMQ101ETD331MK25S, ESMG101ELL331MK25S, and ESMQ101ELL331MK25S are all active products with 330 µF, 100 V ratings and meet all mechanical and electrical substitution criteria. These components provide extended operating temperature ranges and improved lifetime ratings compared to the obsolete UTM series.

Alternative Selections:

The Rubycon 100PX330MEFC12.5X25 and Cornell Dubilier 337CKE100M and 337CKS100M are active products suitable for substitution. The 337CKS100M matches the original operating temperature range (-40°C ~ 85°C) and lifetime specification (2000 Hrs @ 85°C), making it a direct functional equivalent with higher voltage rating.

Compliance Considerations:

All listed substitute parts are RoHS3 compliant or RoHS compliant and REACH unaffected, meeting current regulatory requirements. The Chemi-Con EGXF800ELL331MK25S carries AEC-Q200 automotive qualification, suitable for applications requiring automotive-grade components.

Voltage Rating Selection:

The original UTM1A331MHD operates at 10 V. All substitute parts are rated at 63 V or higher, providing design margin. Selection of higher voltage ratings does not compromise performance in 10 V applications and extends component reliability.

Frequently Asked Questions (FAQ)

Q: Can I use a 100 V rated capacitor in place of the 10 V UTM1A331MHD?

A: Yes. Higher voltage ratings are acceptable substitutes for lower voltage applications. A 100 V capacitor operates safely in a 10 V circuit and provides additional design margin. The capacitance value (330 µF) and tolerance (±20%) remain the critical parameters for functional equivalence.

Q: What is the difference between the Chemi-Con EKMQ101ELL331MK25S and ESMG101ELL331MK25S?

A: Both are 330 µF, 100 V Chemi-Con capacitors with identical mechanical dimensions and lead spacing. The EKMQ101ELL331MK25S operates across -55°C ~ 105°C with 2000 Hrs @ 105°C lifetime. The ESMG101ELL331MK25S operates across -40°C ~ 85°C with 2000 Hrs @ 85°C lifetime. Selection depends on the application's temperature requirements.

Q: Is the height difference between the original UTM1A331MHD (1.024") and substitute parts (1.043") significant?

A: The height difference of 0.019" (0.5 mm) is within typical PCB layout tolerances for through-hole components. Both dimensions are acceptable for standard radial capacitor footprints. Verify PCB clearance during layout if space is constrained.

Q: Why is the UPJ1J331MHD listed as "Not For New Designs"?

A: The UPJ1J331MHD is a legacy Nichicon product with restricted design-in status. For new designs, select from active product status components such as the Chemi-Con or Rubycon alternatives listed in this reference.

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

A: All substitute parts are radial, can package with through-hole mounting and 0.197" (5.00 mm) lead spacing, matching the original UTM1A331MHD mechanical interface. Packaging variations (Bulk vs. other options) do not affect electrical or mechanical compatibility.

Q: What is the significance of ESR (Equivalent Series Resistance) specifications?

A: ESR values are provided for substitute parts where available. The original UTM1A331MHD does not specify ESR. For applications sensitive to ESR characteristics, refer to the specific ESR values listed for substitute parts (e.g., 337CKE100M at 402 mOhm @ 120 Hz, EGXF800ELL331MK25S at 72 mOhm @ 100 kHz).

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