UKZ1E331MHM1TO Equivalent & Substitute Parts

Part Overview

The UKZ1E331MHM1TO is a 330 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 1000 hours at 85°C and is designed for audio applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage - Rated	25 V
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00mm)
Size / Dimension	0.492" Dia (12.50mm)
Height - Seated (Max)	1.043" (26.50mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UKZ1E331MHM1TO is determined by the following criteria:

Primary Substitution Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 0.197" (5.00mm) (exact match required)
Size / Dimension: 0.492" Dia (12.50mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)

Secondary Substitution Parameters (allowable variations):

Voltage - Rated: May be equal to or greater than 25 V
Operating Temperature Range: May be equal to or greater than -40°C ~ 85°C
Lifetime @ Temperature: May be equal to or greater than 1000 Hrs @ 85°C

Substitute parts are grouped into two categories: Upgrade parts (higher voltage rating and/or extended lifetime) and Similar parts (higher voltage rating with comparable performance).

Parameter Comparison

Parameter	UKZ1E331MHM1TO (Main)	UBT1J331MHD8TO (Upgrade)	UHE1J331MHD1TO (Upgrade)	EGXE630ETE331MK25S (Upgrade)	EKZE800ETD331MK25S (Similar)
Manufacturer	Nichicon	Nichicon	Nichicon	Chemi-Con	Chemi-Con
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	25 V	63 V	63 V	63 V	80 V
Lifetime @ Temperature	1000 Hrs @ 85°C	5000 Hrs @ 125°C	10000 Hrs @ 105°C	5000 Hrs @ 125°C	5000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 125°C	-40°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	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)
Height - Seated (Max)	1.043" (26.50mm)	1.063" (27.00mm)	1.063" (27.00mm)	1.063" (27.00mm)	1.043" (26.50mm)
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	Obsolete	Active	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

UBT1J331MHD8TO (Nichicon UBT Series): This upgrade substitute offers 63 V rated voltage, extended lifetime of 5000 hours at 125°C, and expanded operating temperature range to 125°C. Product status is Active. This part is suitable for applications requiring enhanced thermal performance and voltage margin. Automotive-rated with AEC-Q200 compliance consideration.

UHE1J331MHD1TO (Nichicon UHE Series): This upgrade substitute provides 63 V rated voltage and extended lifetime of 10000 hours at 105°C. Product status is Not For New Designs, limiting its use to legacy system support only. Operating temperature range extends to 105°C.

EGXE630ETE331MK25S (Chemi-Con GXE Series): This upgrade substitute from an alternative manufacturer offers 63 V rated voltage, 5000-hour lifetime at 125°C, and AEC-Q200 automotive rating. Product status is Active. This part provides cross-manufacturer compatibility with automotive-grade reliability.

EKZE800ETD331MK25S (Chemi-Con KZE Series): This similar substitute provides the highest voltage rating at 80 V with 5000-hour lifetime at 105°C. Product status is Active. This part offers maximum voltage headroom for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute? A: Yes. A capacitor with voltage rating equal to or greater than 25 V is electrically compatible. Higher voltage ratings provide additional safety margin and do not degrade circuit performance in applications designed for 25 V operation.

Q: What is the impact of height variation between parts? A: The main part has a maximum seated height of 1.043" (26.50mm). Upgrade substitutes UBT1J331MHD8TO, UHE1J331MHD1TO, and EGXE630ETE331MK25S have a maximum seated height of 1.063" (27.00mm), a 0.020" (0.50mm) increase. EKZE800ETD331MK25S maintains the original 1.043" (26.50mm) height. Verify PCB layout clearance before selection.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the main part.

Q: Which substitute is recommended for new designs? A: UBT1J331MHD8TO and EGXE630ETE331MK25S both have Active product status and are suitable for new designs. UHE1J331MHD1TO is marked Not For New Designs and should be used only for legacy system support.

Q: What is the difference between Upgrade and Similar categories? A: Upgrade parts (UBT1J331MHD8TO, UHE1J331MHD1TO, EGXE630ETE331MK25S) provide enhanced performance through higher voltage ratings and extended lifetime specifications. The Similar part (EKZE800ETD331MK25S) offers the highest voltage rating at 80 V with comparable lifetime performance.

Q: Can I substitute across manufacturers? A: Yes. EGXE630ETE331MK25S (Chemi-Con) and EKZE800ETD331MK25S (Chemi-Con) are cross-manufacturer substitutes that maintain all critical mechanical and electrical parameters. Verify application-specific requirements such as automotive certification before selection.

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