Equivalent & Substitute Parts for UEP1E331MHD1TO

Part Overview

The UEP1E331MHD1TO is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 2000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part carries a "Not For New Designs" status, indicating that while it remains available in inventory, alternative solutions should be evaluated for new development projects.

Identifying equivalent and substitute parts is necessary due to the product's discontinued design status and to ensure long-term supply chain reliability for existing applications.

Substiute Parts

UEP1E331MHD1TO

NichiconIn Stock: 1235UEP1E331MHD1TO Datasheet

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UEP1V331MHD1TO

NichiconIn Stock: 1546UEP1V331MHD1TO Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the UEP1E331MHD1TO is determined by the following criteria:

Electrical Parameters (Must Match or Exceed):

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Lifetime @ Temperature: 2000 Hrs @ 105°C (exact match required)
• Polarization: Bi-Polar (exact match required)

Mechanical Parameters (Must Match):

• Lead Spacing: 0.197" (5.00mm)
• Package Type: Radial, Can
• Mounting Type: Through Hole
• Size / Dimension: 0.492" Dia (12.50mm)
• Height - Seated (Max): 0.866" (22.00mm)

Voltage Rating (Can Be Equal or Higher):

• Minimum acceptable: 25 V
• Higher voltage ratings provide additional design margin and are acceptable substitutes

The UEP1V331MHD1TO qualifies as a substitute because it maintains all electrical and mechanical parameters while providing an upgraded voltage rating of 35 V, offering improved reliability margin in the same physical package.

Parameter Comparison

Engineering Selection Recommendations

Both the UEP1E331MHD1TO and UEP1V331MHD1TO carry "Not For New Designs" status, indicating that neither part is recommended for new development initiatives. However, for existing applications currently using the UEP1E331MHD1TO, the UEP1V331MHD1TO provides a direct substitute with identical electrical and mechanical characteristics.

The UEP1V331MHD1TO offers a higher voltage rating (35 V versus 25 V) while maintaining the same physical footprint and thermal performance. This upgrade provides additional design margin without requiring PCB modifications or circuit redesign.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for existing applications.

Frequently Asked Questions (FAQ)

Q: Can the UEP1V331MHD1TO replace the UEP1E331MHD1TO in existing designs?

A: Yes. The UEP1V331MHD1TO is a direct substitute with identical capacitance (330 µF), tolerance (±20%), thermal performance (2000 Hrs @ 105°C), operating temperature range (-55°C ~ 105°C), and physical dimensions. The higher voltage rating (35 V) is compatible with circuits designed for 25 V operation.

Q: Are there any PCB layout changes required when substituting to the UEP1V331MHD1TO?

A: No. Both parts share identical lead spacing (0.197" / 5.00mm), package type (Radial, Can), and overall dimensions (0.492" Dia × 0.866" Height). No PCB modifications are necessary.

Q: What is the significance of the higher voltage rating on the substitute part?

A: The 35 V rating on the UEP1V331MHD1TO provides additional voltage margin compared to the 25 V rating of the UEP1E331MHD1TO. This allows the substitute to operate safely in circuits with higher transient voltages or design margin requirements, while remaining fully compatible with 25 V nominal applications.

Q: Are both parts compliant with current regulatory standards?

A: Both the UEP1E331MHD1TO and UEP1V331MHD1TO are ROHS3 compliant and REACH unaffected. However, both carry "Not For New Designs" status, indicating they are legacy components. For new development, alternative current-generation capacitors should be evaluated.

Q: What is the difference between the part numbers UEP1E and UEP1V?

A: The difference lies in the voltage rating designation. "UEP1E" indicates a 25 V rating, while "UEP1V" indicates a 35 V rating. All other electrical and mechanical specifications remain identical between these two variants within the UEP series.