UVR2E330MHD Equivalent & Substitute Parts

Part Overview

The UVR2E330MHD is a 33 µF, 250 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. The UVR series offers a 2000-hour lifetime rating at 85°C with general-purpose applications. Finding equivalent and substitute parts is necessary to support existing designs, ensure supply chain continuity, and evaluate performance upgrades where applicable.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage Rating	250 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Height (Seated Max)	0.866" (22.00 mm)
Mounting Type	Through Hole
Package	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UVR2E330MHD is determined by the following critical parameters:

Electrical Compatibility: Capacitance (33 µF), voltage rating (250 V minimum), and tolerance (±20%) must match or exceed the original specification.

Mechanical Compatibility: Lead spacing (0.197" / 5.00 mm), case diameter (0.492" / 12.50 mm), and height must fit within the PCB layout constraints. Parts with identical or smaller physical dimensions are mechanically compatible.

Thermal & Reliability: Operating temperature range (-40°C ~ 85°C minimum) and lifetime rating (2000 Hrs @ 85°C minimum) establish baseline performance requirements.

Regulatory Compliance: RoHS3 compliance is mandatory for all substitutes.

Substitutes are categorized as follows:

Upgrade Parts: Higher lifetime ratings (10,000–12,000 hours) or extended temperature ranges (-40°C ~ 105°C), offering improved reliability while maintaining electrical and mechanical compatibility.

Similar Parts: Same electrical specifications and lifetime but different physical dimensions (larger lead spacing or case size), requiring PCB layout verification.

Direct Equivalent: Different manufacturer (Chemi-Con, EPCOS) with identical electrical and mechanical specifications, suitable for direct replacement.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Case Dia	Height (Max)	Product Status
UVR2E330MHD	Nichicon	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	Not For New Designs
UCS2E330MHD	Nichicon	33 µF	250 V	10000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	Active
UCY2E330MHD3	Nichicon	33 µF	250 V	12000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	Active
UCY2V330MHD	Nichicon	33 µF	350 V	12000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	Active
URS2E330MHD	Nichicon	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.709" (18.00 mm)	0.650" (16.50 mm)	Active
URS2E330MHD6	Nichicon	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.295" (7.50 mm)	0.630" (16.00 mm)	0.846" (21.50 mm)	Active
ESMG251ELL330MK20S	Chemi-Con	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	Active
B43821K2336M000	EPCOS - TDK Electronics	33 µF	250 V	3000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	Active
B43851K2336M000	EPCOS - TDK Electronics	33 µF	250 V	3000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	Active
EKMG251ELL330MK20S	Chemi-Con	33 µF	250 V	2000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	Active
EKXJ351ELL330MK20S	Chemi-Con	33 µF	350 V	10000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	0.846" (21.50 mm)	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

ESMG251ELL330MK20S (Chemi-Con) provides a direct equivalent with matching electrical and mechanical specifications. Both the original UVR2E330MHD and ESMG251ELL330MK20S share identical capacitance, voltage, tolerance, lifetime, and physical dimensions. This part is Active and RoHS3 compliant.

For Improved Reliability (Same Voltage, Extended Lifetime):

UCS2E330MHD and UCY2E330MHD3 (Nichicon) offer extended lifetime ratings (10,000 and 12,000 hours respectively at 105°C) with expanded operating temperature ranges (-40°C ~ 105°C). Both maintain the same electrical specifications and lead spacing. Height is reduced by 0.020" (0.50 mm), which is mechanically compatible. These parts are Active and RoHS3 compliant.

EKMG251ELL330MK20S (Chemi-Con) provides 2000 hours at 105°C with extended temperature range, maintaining identical physical dimensions to the original.

B43851K2336M000 (EPCOS - TDK Electronics) offers 3000 hours at 105°C with extended temperature range and identical physical dimensions to the original.

For Higher Voltage Applications:

UCY2V330MHD (Nichicon) and EKXJ351ELL330MK20S (Chemi-Con) both provide 350 V rating with 12,000 and 10,000-hour lifetimes respectively. These are suitable only if the circuit design permits higher voltage operation. EKXJ351ELL330MK20S carries AEC-Q200 automotive qualification.

For Different Physical Layouts:

URS2E330MHD and URS2E330MHD6 (Nichicon) maintain identical electrical specifications but feature larger lead spacing (0.295" / 7.50 mm) and different case dimensions. These require PCB layout verification before substitution.

Frequently Asked Questions (FAQ)

Q: Can UCS2E330MHD replace UVR2E330MHD directly on the PCB?

A: Yes. Both parts share identical lead spacing (0.197" / 5.00 mm) and case diameter (0.492" / 12.50 mm). UCS2E330MHD height is 0.020" (0.50 mm) shorter, which does not affect through-hole mounting. Electrical specifications are compatible.

Q: What is the difference between UCS2E330MHD and UCY2E330MHD3?

A: Both are Nichicon upgrades with extended temperature range (-40°C ~ 105°C). UCS2E330MHD provides 10,000 hours at 105°C, while UCY2E330MHD3 provides 12,000 hours at 105°C. Physical dimensions are identical. UCY2E330MHD3 offers longer service life.

Q: Can I use EKXJ351ELL330MK20S (350 V) instead of UVR2E330MHD (250 V)?

A: Electrically, yes—a higher voltage-rated capacitor operates safely in a lower voltage circuit. However, this substitution is valid only if the circuit design permits it. EKXJ351ELL330MK20S is qualified to AEC-Q200 automotive standards and offers 10,000-hour lifetime at 105°C, making it suitable for demanding applications.

Q: Are URS2E330MHD and URS2E330MHD6 compatible with the original UVR2E330MHD footprint?

A: No. Both URS variants have larger lead spacing (0.295" / 7.50 mm) compared to the original (0.197" / 5.00 mm). PCB layout modification is required. Case dimensions also differ. These are suitable only for new designs or boards with compatible spacing.

Q: What is the advantage of EKMG251ELL330MK20S over ESMG251ELL330MK20S?

A: EKMG251ELL330MK20S extends the operating temperature range to -40°C ~ 105°C and maintains 2000-hour lifetime at 105°C, compared to ESMG251ELL330MK20S which operates to 85°C. Both are Chemi-Con products with identical physical dimensions and lead spacing.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed substitute parts are RoHS3 compliant, matching the regulatory status of the original UVR2E330MHD.

Q: Why is UVR2E330MHD marked "Not For New Designs"?

A: This designation indicates the part has been superseded in Nichicon's product lifecycle. Active alternatives with improved specifications (longer lifetime, extended temperature range) are available. Existing designs may continue using UVR2E330MHD, but new designs should evaluate UCS2E330MHD, UCY2E330MHD3, or equivalent alternatives.

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