Equivalent & Substitute Parts for UVR2A3R3MDD

Part Overview

The Nichicon UVR2A3R3MDD is a 3.3 µF, 100 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 2000 hours at 85°C. This part is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value
Capacitance	3.3 µF
Voltage Rating	100 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.079" (2.00 mm)
Size / Diameter	0.197" (5.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)
Operating Temperature Range	-40°C to 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UVR2A3R3MDD is determined by strict equivalence across the following parameters:

Electrical Parameters: Capacitance (3.3 µF), voltage rating (100 V), and tolerance (±20%) must match exactly
Physical Parameters: Package type (radial, can), lead spacing (0.079" / 2.00 mm), diameter (0.197" / 5.00 mm), and height (0.492" / 12.50 mm) must be identical for PCB compatibility
Mounting Type: Through-hole mounting is required
Compliance: ROHS3 compliance is maintained across all substitutes
Polarization: Polar configuration is mandatory

Substitute parts are grouped into three categories based on their relationship to the main part:

Upgrade Substitutes: Parts with enhanced operating temperature ranges or extended lifetime ratings at higher temperatures
Direct Substitutes: Parts with equivalent electrical and mechanical specifications from active manufacturers
Parametric Equivalents: Parts meeting all core electrical and mechanical requirements with minor variations in ripple current or impedance specifications

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Size / Diameter	Height (Max)	Product Status	RoHS Status
UVR2A3R3MDD	Nichicon	3.3 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C to 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
UPM2A3R3MDD	Nichicon	3.3 µF	100 V	±20%	2000 Hrs @ 105°C	-55°C to 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Obsolete	ROHS3
100YXJ3.3M5X11	Rubycon	3.3 µF	100 V	±20%	5000 Hrs @ 105°C	-40°C to 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Active	ROHS3
335CKE100M	Cornell Dubilier / Illinois Capacitor	3.3 µF	100 V	±20%	2000 Hrs @ 105°C	-40°C to 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Active	ROHS3
335KXM100M	Cornell Dubilier / Illinois Capacitor	3.3 µF	100 V	±20%	2000 Hrs @ 105°C	-55°C to 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Active	ROHS3
ECA-2AM3R3	Panasonic Electronic Components	3.3 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C to 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.472" (12.00 mm)	Active	ROHS3
EKYA101ELL3R3ME11D	Chemi-Con	3.3 µF	100 V	±20%	5000 Hrs @ 105°C	-40°C to 105°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Active	ROHS3
ECA-2AM3R3I	Panasonic Electronic Components	3.3 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C to 85°C	0.098" (2.50 mm)	0.197" (5.00 mm)	0.472" (12.00 mm)	Active	ROHS3
SK3R3M100ST	Cornell Dubilier Electronics (CDE)	3.3 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C to 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.512" (13.00 mm)	Active	ROHS3
100PK3R3MEFC5X11	Rubycon	3.3 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C to 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Active	ROHS3
335CKS100M	Cornell Dubilier / Illinois Capacitor	3.3 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C to 85°C	0.079" (2.00 mm)	0.197" (5.00 mm)	0.492" (12.50 mm)	Active	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Identical Operating Conditions)

Parts meeting identical electrical and thermal specifications to the UVR2A3R3MDD are:

100PK3R3MEFC5X11 (Rubycon): Active product status, identical lifetime rating (2000 Hrs @ 85°C), matching operating temperature range (-40°C to 85°C), and identical physical dimensions. Recommended for direct substitution in existing designs.
335CKS100M (Cornell Dubilier / Illinois Capacitor): Active product status, identical lifetime and temperature specifications, matching lead spacing and diameter. Suitable for direct replacement.
ECA-2AM3R3 (Panasonic Electronic Components): Active product status with identical electrical specifications. Height is 0.472" (12.00 mm) versus 0.492" (12.50 mm) on the original part. Verify PCB layout clearance before substitution.

For Enhanced Thermal Performance

Parts with extended operating temperature ranges or longer lifetime ratings at elevated temperatures:

100YXJ3.3M5X11 (Rubycon): Active product status, extended lifetime (5000 Hrs @ 105°C), operating range -40°C to 105°C. Identical physical dimensions and lead spacing. Recommended for applications requiring improved thermal margin.
EKYA101ELL3R3ME11D (Chemi-Con): Active product status, extended lifetime (5000 Hrs @ 105°C), operating range -40°C to 105°C. Identical physical dimensions. Suitable for high-reliability applications.
335CKE100M (Cornell Dubilier / Illinois Capacitor): Active product status, operating range -40°C to 105°C. Identical physical dimensions and lead spacing.
335KXM100M (Cornell Dubilier / Illinois Capacitor): Active product status, extended operating range (-55°C to 105°C). Identical physical dimensions and lead spacing.

Parts Requiring PCB Layout Verification

ECA-2AM3R3I (Panasonic Electronic Components): Lead spacing is 0.098" (2.50 mm) versus 0.079" (2.00 mm) on the original part. PCB footprint compatibility must be verified before use.
SK3R3M100ST (Cornell Dubilier Electronics): Height is 0.512" (13.00 mm) versus 0.492" (12.50 mm) on the original part. Verify PCB clearance and component placement constraints.

All substitute parts maintain ROHS3 compliance and are available from active manufacturers, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different lead spacing?

A: Lead spacing differences require PCB footprint verification. The original UVR2A3R3MDD uses 0.079" (2.00 mm) lead spacing. The ECA-2AM3R3I uses 0.098" (2.50 mm) spacing. Verify that your PCB layout accommodates the alternative spacing before substitution. Physical board modifications may be required.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain identical electrical and thermal specifications to the original part. Upgrade substitutes offer extended lifetime ratings or wider operating temperature ranges. Upgrade substitutes are backward-compatible but provide enhanced performance margins. Selection depends on application thermal requirements and design margins.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, matching the original UVR2A3R3MDD specification.

Q: Why is the UVR2A3R3MDD obsolete?

A: The UVR2A3R3MDD is classified as obsolete by Nichicon. Active equivalent parts from Rubycon, Panasonic, Cornell Dubilier, and Chemi-Con provide equivalent or enhanced performance with guaranteed long-term availability.

Q: Can I use a part with a longer lifetime rating as a direct replacement?

A: Yes. Parts with extended lifetime ratings (5000 Hrs @ 105°C versus 2000 Hrs @ 85°C) are backward-compatible and provide improved reliability margins. Verify that physical dimensions and lead spacing match your PCB layout.

Q: What parameters must match exactly for substitution?

A: Capacitance (3.3 µF), voltage rating (100 V), tolerance (±20%), polarization (polar), package type (radial, can), and mounting type (through-hole) must match exactly. Lead spacing (0.079" / 2.00 mm), diameter (0.197" / 5.00 mm), and height (0.492" / 12.50 mm) should match unless PCB layout permits alternative dimensions. Operating temperature range and lifetime ratings may be enhanced without affecting compatibility.

Q: Which substitute offers the best long-term availability?

A: Parts with active product status from established manufacturers provide the best long-term availability. Recommended options include 100YXJ3.3M5X11 (Rubycon), EKYA101ELL3R3ME11D (Chemi-Con), 335CKE100M (Cornell Dubilier), and ECA-2AM3R3 (Panasonic). All are currently in active production.

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