Equivalent & Substitute Parts for UVR2A331MHA

Part Overview

The UVR2A331MHA is a 330 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, with 960 units currently in stock. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 2000 hours at 85°C, suitable for general-purpose applications requiring through-hole mounting.

Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production support. The following alternatives maintain the core electrical and mechanical specifications while offering improved availability and compliance certifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	100 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.492" (12.50 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 100 V (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)
Diameter: 0.492" (12.50 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

All substitute parts listed below meet these core electrical and mechanical requirements. Variations in operating temperature range, lifetime ratings at different temperatures, ripple current specifications, and RoHS compliance status are noted but do not disqualify substitution eligibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Diameter	Height (Max)	Operating Temp Range	Lifetime @ Temp	Product Status	RoHS Status
UVR2A331MHA	Nichicon	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Obsolete	Non-compliant
UVK2A331MHD	Nichicon	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Not For New Designs	ROHS3 Compliant
UVR2A331MHD6	Nichicon	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active	Not specified
100PX330MEFC12.5X25	Rubycon	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	2000 Hrs @ 105°C	Active	ROHS3 Compliant
337CKE100M	Cornell Dubilier / Illinois Capacitor	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 105°C	2000 Hrs @ 105°C	Active	ROHS3 Compliant
337CKS100M	Cornell Dubilier / Illinois Capacitor	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active	ROHS3 Compliant
ESMG101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active	ROHS3 Compliant
ESMQ101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active	ROHS3 Compliant
EKMQ101ELL331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	2000 Hrs @ 105°C	Active	ROHS3 Compliant
EKMQ101ETD331MK25S	Chemi-Con	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.043" (26.50 mm)	-55°C ~ 105°C	2000 Hrs @ 105°C	Active	ROHS3 Compliant
ECA-2AM331	Panasonic Electronic Components	330 µF	100 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	-40°C ~ 85°C	2000 Hrs @ 85°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for Active Designs:

UVR2A331MHD6 (Nichicon) is the direct successor within the same manufacturer's product line, maintaining identical electrical and mechanical specifications while offering active product status. This part provides continuity for existing designs with minimal qualification effort.

Alternative Active Options:

For designs requiring extended operating temperature range or enhanced thermal performance, EKMQ101ELL331MK25S or EKMQ101ETD331MK25S (Chemi-Con) offer operation to 105°C with 2000-hour lifetime at elevated temperature. Both are ROHS3 compliant and actively manufactured.

For applications requiring exact thermal matching to the original specification (2000 Hrs @ 85°C), ECA-2AM331 (Panasonic), ESMG101ELL331MK25S, or ESMQ101ELL331MK25S (Chemi-Con) provide equivalent performance with ROHS3 compliance and active product status.

100PX330MEFC12.5X25 (Rubycon) and 337CKE100M (Cornell Dubilier) are active alternatives with extended temperature capability to 105°C and ROHS3 compliance. 337CKS100M (Cornell Dubilier) matches the original thermal specification at 85°C.

All recommended substitutes maintain the core 330 µF, 100 V, ±20% tolerance specification with identical through-hole radial can package geometry and 5.00 mm lead spacing.

Frequently Asked Questions (FAQ)

Q: Can UVR2A331MHA be directly replaced with UVK2A331MHD?

A: Yes. Both parts share identical electrical specifications (330 µF, 100 V, ±20% tolerance) and mechanical dimensions (0.492" diameter, 5.00 mm lead spacing, radial can package). UVK2A331MHD offers ROHS3 compliance but carries "Not For New Designs" status. For new applications, UVR2A331MHD6 is preferred.

Q: What is the difference between parts with 2000 Hrs @ 85°C and 2000 Hrs @ 105°C ratings?

A: The lifetime rating indicates the expected operational duration at the specified temperature. Parts rated 2000 Hrs @ 105°C maintain this lifetime across a wider operating range (-55°C to 105°C) compared to 2000 Hrs @ 85°C parts (-40°C to 85°C). Selection depends on the application's thermal environment. Both are electrically equivalent at 100 V, 330 µF.

Q: Are all substitute parts physically interchangeable?

A: All listed substitutes share the same lead spacing (0.197", 5.00 mm), diameter (0.492", 12.50 mm), and through-hole radial can package. Height varies slightly: UVR2A331MHA, UVK2A331MHD, UVR2A331MHD6, and ECA-2AM331 measure 1.063" (27.00 mm), while Rubycon, Cornell Dubilier, and Chemi-Con alternatives measure 1.043" (26.50 mm). This 0.020" difference is within typical PCB layout tolerances for through-hole applications.

Q: Which substitute offers the best compliance profile?

A: All active substitutes listed carry ROHS3 compliance. UVR2A331MHA is RoHS non-compliant. For compliance-critical applications, select from active parts with ROHS3 designation: UVK2A331MHD, 100PX330MEFC12.5X25, 337CKE100M, 337CKS100M, ESMG101ELL331MK25S, ESMQ101ELL331MK25S, EKMQ101ELL331MK25S, EKMQ101ETD331MK25S, or ECA-2AM331.

Q: Can I use a substitute with higher temperature rating in place of the original?

A: Yes. Parts with extended temperature ratings (105°C maximum) are backward-compatible with applications designed for 85°C operation. The higher rating provides additional thermal margin without affecting electrical performance at the original operating point.

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