Equivalent & Substitute Parts for UTM1A331MHD1TO

Part Overview

The UTM1A331MHD1TO is a 330 µF, 10 V aluminum electrolytic capacitor in radial through-hole configuration, manufactured by Nichicon under the UTM series. This component is rated for 2000 hours at 85°C and is designed for general-purpose applications requiring polar capacitive storage.

The UTM1A331MHD1TO has reached obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Polarization	Polar
Mounting Type	Through Hole
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)
Operating Temperature Range	-40°C ~ 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C

Substitute Part Grouping Explanation

Substitution of the UTM1A331MHD1TO is determined by the following critical parameters:

Capacitance Value: 330 µF (exact match required)
Voltage Rating: Minimum 10 V (equal or higher voltage ratings are acceptable)
Tolerance: ±20% (standard tolerance for general-purpose applications)
Polarization: Polar (electrolytic capacitor type)
Mounting Configuration: Through-hole radial can package
Lead Spacing: 0.197" (5.00 mm) pitch
Physical Dimensions: Compatible with 0.492" diameter and maximum height constraints

The EKZE800ETD331MK25S from Chemi-Con meets all substitution criteria. This part maintains identical capacitance, tolerance, polarization, and mechanical compatibility while providing enhanced electrical performance characteristics.

Parameter Comparison

Parameter	UTM1A331MHD1TO (Nichicon)	EKZE800ETD331MK25S (Chemi-Con)	Compatibility
Capacitance	330 µF	330 µF	Exact Match
Voltage Rating	10 V	80 V	Compatible (Higher Rating)
Tolerance	±20%	±20%	Exact Match
Polarization	Polar	Polar	Exact Match
Mounting Type	Through Hole	Through Hole	Exact Match
Package Type	Radial, Can	Radial, Can	Exact Match
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	Exact Match
Size / Dimension	0.492" Dia (12.50 mm)	0.492" Dia (12.50 mm)	Exact Match
Height - Seated (Max)	1.024" (26.00 mm)	1.043" (26.50 mm)	Compatible (Minimal Variance)
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 105°C	Compatible (Extended Range)
Lifetime @ Temperature	2000 Hrs @ 85°C	5000 Hrs @ 105°C	Compatible (Enhanced Reliability)
Product Status	Obsolete	Active	Substitute Available

Engineering Selection Recommendations

The EKZE800ETD331MK25S is the qualified substitute for the obsolete UTM1A331MHD1TO based on the following factors:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity.
Compliance: The EKZE800ETD331MK25S is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements.
Electrical Compatibility: The higher voltage rating (80 V versus 10 V) provides design margin without affecting circuit performance in applications rated for 10 V operation.
Mechanical Compatibility: Physical dimensions and lead spacing are identical or within acceptable tolerance, enabling direct board-level substitution.
Performance Enhancement: Extended operating temperature range (-40°C ~ 105°C) and increased lifetime rating (5000 Hrs @ 105°C) provide improved reliability over the original component.

Frequently Asked Questions (FAQ)

Q: Can the EKZE800ETD331MK25S be used as a direct replacement for the UTM1A331MHD1TO?

A: Yes. The substitute part maintains identical capacitance (330 µF), tolerance (±20%), polarization (polar), mounting type (through-hole radial), lead spacing (5.00 mm), and physical dimensions (0.492" diameter). The higher voltage rating and extended temperature range do not create compatibility issues in applications designed for the original 10 V component.

Q: What is the significance of the higher voltage rating on the substitute part?

A: The EKZE800ETD331MK25S is rated for 80 V compared to the original 10 V rating. In circuit applications, using a capacitor with a higher voltage rating than required provides design margin and does not degrade performance. The capacitance value and tolerance remain unchanged.

Q: Are there physical dimension differences between these parts?

A: The height dimension shows a minimal variance: the original part is 1.024" (26.00 mm) maximum, while the substitute is 1.043" (26.50 mm) maximum. This 0.019" (0.50 mm) difference is within acceptable tolerance for through-hole PCB applications and does not require board redesign.

Q: What packaging options are available for the substitute part?

A: The EKZE800ETD331MK25S is supplied in Tape & Box (TB) packaging, suitable for both manual and automated assembly processes.

Q: Does the substitute part meet current regulatory standards?

A: Yes. The EKZE800ETD331MK25S is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

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