UPX1E331MHD1TO Equivalent & Substitute Parts

Part Overview

The UPX1E331MHD1TO is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by Nichicon in radial, through-hole configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 20000 hours at 105°C, making it suitable for general-purpose applications requiring stable capacitance performance.

Substiute Parts

UPX1E331MHD1TO

NichiconIn Stock: 1589UPX1E331MHD1TO Datasheet

Current PartRFQ

EY1K331MP51225ER

Chinsan (Elite)In Stock: 1061EY1K331MP51225ER Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UPX1E331MHD1TO is determined by the following critical parameters:

Capacitance value must remain 330 µF to maintain circuit functionality. Voltage rating must be equal to or greater than 25 V to ensure safe operation under specified conditions. Lead spacing of 0.197" (5.00mm) and radial can package configuration must match for direct PCB compatibility. Operating temperature range must encompass -55°C to 105°C. Polarization must remain polar. Mounting type must be through-hole.

The EY1K331MP51225ER qualifies as a substitute based on matching capacitance (330 µF), identical lead spacing (5.00mm), identical package configuration (radial, can), identical mounting type (through-hole), and identical operating temperature range (-55°C ~ 105°C). The higher voltage rating (80 V versus 25 V) provides additional safety margin and does not compromise circuit operation.

Parameter Comparison

Engineering Selection Recommendations

The EY1K331MP51225ER is a direct functional substitute for the obsolete UPX1E331MHD1TO. Both components maintain ROHS3 compliance and identical mechanical compatibility. The substitute part carries active product status, ensuring long-term availability and supply chain stability. The elevated voltage rating of 80 V provides operational headroom beyond the original 25 V specification without introducing compatibility issues. The reduced lifetime rating (10000 hours versus 20000 hours at 105°C) should be evaluated against application duty cycle requirements; for general-purpose applications with typical thermal profiles, this difference does not present a functional constraint.

Frequently Asked Questions (FAQ)

Q: Can the EY1K331MP51225ER directly replace the UPX1E331MHD1TO on existing PCBs?

A: Yes. Both components share identical lead spacing (5.00mm), package configuration (radial, can), and mounting type (through-hole). No PCB layout modifications are required.

Q: Does the higher voltage rating (80 V) of the substitute affect circuit operation?

A: No. A capacitor with higher voltage rating operates safely at lower voltages. The 80 V rating provides additional safety margin without altering electrical performance at 25 V operation.

Q: What is the significance of the reduced lifetime rating in the substitute part?

A: The EY1K331MP51225ER is rated for 10000 hours at 105°C compared to 20000 hours for the original part. This difference is relevant only for applications with sustained high-temperature operation. General-purpose applications typically operate at lower temperatures, where lifetime ratings extend significantly beyond these specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the UPX1E331MHD1TO and EY1K331MP51225ER are ROHS3 compliant, meeting environmental and regulatory requirements.

Q: Why is the original part listed as obsolete?

A: Nichicon has discontinued the UPX series. The EY1K331MP51225ER from Chinsan (Elite) provides equivalent electrical and mechanical performance with active product status, ensuring continued availability.