UVR2E330MHA Equivalent & Substitute Parts

Part Overview

The UVR2E330MHA is a 33 µF, 250 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete and rated for 2000 hours at 85°C. Due to its obsolete status, direct replacement with equivalent or upgraded alternatives is necessary for new designs and ongoing production support. Substitute parts maintain the same electrical specifications (33 µF capacitance, 250 V rated voltage, ±20% tolerance) while offering improved reliability, extended operational lifetime, or enhanced compliance certifications.

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)
Package Type	Radial, Can
Mounting Type	Through Hole
Polarization	Polar

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Electrical Compatibility: All substitute parts maintain 33 µF capacitance and 250 V rated voltage with ±20% tolerance, ensuring direct electrical equivalence in circuit applications.

Mechanical Compatibility: Lead spacing (5.00 mm), package type (radial, can), and mounting method (through hole) are identical across all substitutes, enabling direct PCB footprint compatibility without layout modifications.

Thermal & Reliability Characteristics: Substitutes are grouped by operational lifetime and temperature rating. Direct substitutes maintain 2000 hours at 85°C. Upgraded alternatives extend lifetime to 3000–12000 hours and/or increase maximum operating temperature to 105°C, providing enhanced reliability margins.

Compliance & Status: Substitutes are selected based on RoHS3 compliance and active product status where available, ensuring long-term supply chain viability and regulatory alignment.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ Temp.	Operating Temp. Range	Product Status	RoHS Status
UVR2E330MHA	Nichicon	UVR	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Obsolete	Non-compliant
UVR2E330MHD	Nichicon	UVR	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	ROHS3 Compliant
ESMG251ELL330MK20S	Chemi-Con	SMG	33 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Active	ROHS3 Compliant
UCS2E330MHD	Nichicon	UCS	33 µF	250 V	10000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
UCY2E330MHD3	Nichicon	UCY	33 µF	250 V	12000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
UCY2V330MHD	Nichicon	UCY	33 µF	350 V	12000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
B43821K2336M000	EPCOS - TDK Electronics	B43821	33 µF	250 V	3000 Hrs @ 85°C	-40°C ~ 85°C	Active	ROHS3 Compliant
B43851K2336M000	EPCOS - TDK Electronics	B43851	33 µF	250 V	3000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
EKMG251ELL330MK20S	Chemi-Con	KMG	33 µF	250 V	2000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
EKXJ351ELL330MK20S	Chemi-Con	KXJ	33 µF	350 V	10000 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant
MAL214263393E3	Vishay Beyschlag/Draloric/BC Components	142 RHS	33 µF	250 V	2500 Hrs @ 105°C	-40°C ~ 105°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Equivalent Electrical & Thermal Performance):

UVR2E330MHD and ESMG251ELL330MK20S provide direct electrical and mechanical equivalence to UVR2E330MHA. Both maintain 33 µF capacitance, 250 V rating, and 2000-hour lifetime at 85°C. UVR2E330MHD is a Nichicon part within the same UVR series and is recommended for applications requiring brand continuity. ESMG251ELL330MK20S is a Chemi-Con alternative with active product status and full RoHS3 compliance, suitable for new designs requiring multi-source qualification.

Upgraded Substitutes (Extended Lifetime & Temperature Range):

UCS2E330MHD, UCY2E330MHD3, B43821K2336M000, and B43851K2336M000 extend operational lifetime to 3000–10000 hours and support maximum operating temperatures of 105°C. These upgrades are appropriate for applications requiring enhanced reliability or operation in elevated thermal environments. UCS2E330MHD and UCY2E330MHD3 are Nichicon products with active status. B43821K2336M000 and B43851K2336M000 are EPCOS/TDK alternatives with specified ESR characteristics (5.6 Ohm @ 120 Hz).

Higher Voltage Alternatives:

UCY2V330MHD and EKXJ351ELL330MK20S increase rated voltage to 350 V while maintaining 33 µF capacitance. These parts are suitable for applications requiring voltage margin or operating in circuits with higher transient voltage conditions. EKXJ351ELL330MK20S carries AEC-Q200 automotive qualification and is rated for 10000 hours at 105°C.

Compliance & Supply Chain Considerations:

All recommended substitutes are RoHS3 compliant and carry active product status, ensuring regulatory alignment and long-term availability. UVR2E330MHA is obsolete and non-compliant; transition to any active substitute is necessary for new production.

Frequently Asked Questions (FAQ)

Q: Can UVR2E330MHD be used as a direct replacement for UVR2E330MHA?

A: Yes. UVR2E330MHD maintains identical electrical specifications (33 µF, 250 V, ±20% tolerance), mechanical dimensions, and lead spacing. The primary difference is improved RoHS3 compliance and active product status. No circuit modifications are required.

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

A: Direct substitutes (UVR2E330MHD, ESMG251ELL330MK20S) match the original part's 2000-hour lifetime at 85°C. Upgraded substitutes (UCS2E330MHD, UCY2E330MHD3) extend lifetime to 10000–12000 hours and increase maximum operating temperature to 105°C, providing enhanced reliability margins for demanding applications.

Q: Are higher voltage alternatives (350 V) compatible with 250 V circuits?

A: Yes. Higher voltage-rated capacitors (UCY2V330MHD, EKXJ351ELL330MK20S) are electrically compatible with 250 V circuits. The 350 V rating provides additional voltage margin and is suitable for applications with transient overvoltage conditions. No circuit modifications are required; the capacitor will operate safely at or below its rated voltage.

Q: What is the significance of the AEC-Q200 rating on EKXJ351ELL330MK20S?

A: AEC-Q200 is an automotive qualification standard. EKXJ351ELL330MK20S meets automotive reliability and quality requirements, making it suitable for automotive and high-reliability applications. This certification is not required for general-purpose industrial applications.

Q: Can I use EKXJ351ELL330MK20S in place of UVR2E330MHA?

A: Yes. EKXJ351ELL330MK20S is mechanically and electrically compatible. It provides upgraded specifications: 33 µF capacitance, 350 V rating (exceeds 250 V requirement), 10000-hour lifetime at 105°C, and AEC-Q200 automotive qualification. This is a high-reliability upgrade suitable for demanding applications.

Q: What are the ripple current differences between substitutes?

A: Ripple current capacity varies by part design and thermal rating. UCS2E330MHD and UCY2E330MHD3 support higher ripple currents (400–800 mA) compared to the original UVR2E330MHA (230–368 mA), reflecting their enhanced thermal performance. Verify ripple current specifications against circuit requirements before selection.

Q: Is ESMG251ELL330MK20S recommended for new designs?

A: Yes. ESMG251ELL330MK20S is a Chemi-Con part with active product status, full RoHS3 compliance, and 2000-hour lifetime at 85°C. It provides direct electrical equivalence and is suitable for new production designs requiring multi-source component qualification.

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