UHW1E331MPD Equivalent & Substitute Parts

Part Overview

The UHW1E331MPD is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by Nichicon in the UHW series. This radial, through-hole component is rated for 9000 hours at 105°C and is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part is currently active in production with 849 units in stock. Equivalent substitute parts are identified to provide procurement flexibility, extended availability, and alternative sourcing options while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ Temperature	9000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Height (Seated Max)	0.512" (13.00 mm)

Substitute Part Grouping Explanation

Substitute parts for the UHW1E331MPD are qualified based on strict equivalence across the following critical parameters:

Electrical Specifications: Capacitance value (330 µF), voltage rating (25 V), and tolerance (±20%) must be identical
Thermal Performance: Lifetime rating of 9000 hours at 105°C is mandatory
Operating Range: Temperature range of -40°C to 105°C must be maintained
Mechanical Compatibility: Lead spacing (4.60 mm), case diameter (8.00 mm), and height (13.00 mm) must match for PCB footprint compatibility
Mounting Configuration: Through-hole radial package type is required for direct board-level substitution

The Rubycon 25ZLJ330M8X11.5 meets all these criteria and qualifies as a parametric equivalent. Both parts share identical capacitance, voltage, tolerance, thermal rating, temperature range, and physical dimensions, ensuring direct substitution without circuit redesign or PCB modification.

Parameter Comparison

Parameter	UHW1E331MPD (Nichicon)	25ZLJ330M8X11.5 (Rubycon)
Capacitance	330 µF	330 µF
Voltage Rating	25 V	25 V
Tolerance	±20%	±20%
Lifetime @ 105°C	9000 Hrs	9000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Polarization	Polar	Polar
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)	0.315" (8.00 mm)
Height (Seated Max)	0.512" (13.00 mm)	0.512" (13.00 mm)
Mounting Type	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can
Applications	General Purpose	General Purpose
Product Status	Active	Active

Engineering Selection Recommendations

Both the UHW1E331MPD and 25ZLJ330M8X11.5 are active production parts from established manufacturers. Selection between these components should be based on:

Availability: The Rubycon 25ZLJ330M8X11.5 has significantly higher inventory (75,891 units) compared to the Nichicon UHW1E331MPD (849 units), making it suitable for high-volume procurement or extended lead-time mitigation
Compliance Status: The Rubycon part carries explicit ROHS3 compliance and REACH unaffected certifications, providing documented regulatory alignment for applications requiring these standards
Electrical Performance: Both parts meet identical electrical specifications and thermal ratings, ensuring functional equivalence in circuit operation

Frequently Asked Questions (FAQ)

Q: Can the Rubycon 25ZLJ330M8X11.5 be used as a direct replacement for the Nichicon UHW1E331MPD?

A: Yes. Both parts are parametric equivalents with identical capacitance (330 µF), voltage rating (25 V), tolerance (±20%), thermal lifetime (9000 Hrs @ 105°C), operating temperature range (-40°C to 105°C), and physical dimensions. Direct PCB substitution is possible without circuit modification.

Q: Are there any differences in ripple current handling between these parts?

A: The Rubycon part exhibits slightly higher ripple current at low frequency (660 mA @ 120 Hz versus 600 mA @ 120 Hz) and lower impedance (75 mOhms versus 100 mOhms). Both specifications remain within acceptable ranges for general-purpose applications and do not restrict substitution.

Q: What is the lead spacing, and does it affect PCB compatibility?

A: Both parts have identical lead spacing of 0.138 inches (4.60 mm) and matching case dimensions (0.315" diameter, 0.512" height). PCB footprints designed for either part are directly compatible.

Q: Are there compliance or certification differences?

A: The Rubycon 25ZLJ330M8X11.5 carries explicit ROHS3 compliance and REACH unaffected certifications. Both parts are classified as EAR99 for export control purposes. Compliance requirements should be verified against your specific application standards.

Q: Which part should be selected for new designs?

A: Both parts are suitable for new designs. Selection should prioritize availability, supply chain stability, and any specific compliance documentation requirements for your application. The Rubycon part offers higher inventory availability and explicit regulatory certifications.

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