Equivalent & Substitute Parts for UHW1H331MPD

Part Overview

The Nichicon UHW1H331MPD is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package configuration. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product line. Organizations using this part in existing designs or legacy systems require qualified substitute options that maintain electrical and mechanical compatibility while offering active product status from alternative manufacturers.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	10000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.197" (5.00mm)
Case Diameter	0.394" (10.00mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UHW1H331MPD is determined by strict equivalence across the following parameters: capacitance (330 µF), voltage rating (50 V), tolerance (±20%), lifetime specification (10000 Hrs @ 105°C), operating temperature range (-40°C ~ 105°C), lead spacing (5.00mm), case diameter (10.00mm), and through-hole radial mounting configuration. All substitute parts listed maintain these core electrical and mechanical specifications. Height variation within the radial can package (21.50mm to 22.00mm) remains within acceptable PCB footprint tolerances for through-hole radial components. Impedance and ripple current characteristics vary among substitutes but do not disqualify parts meeting the primary electrical parameters.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Lead Spacing	Case Diameter	Height (Max)	Impedance	Product Status
UHW1H331MPD	Nichicon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	5.00mm	10.00mm	21.50mm	30 mOhms	Not For New Designs
50YXJ330M10X20	Rubycon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	5.00mm	10.00mm	22.00mm	60 mOhms	Active
50ZLH330MEFC10X20	Rubycon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	5.00mm	10.00mm	22.00mm	—	Active
50ZLJ330M10X20	Rubycon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	5.00mm	10.00mm	22.00mm	38 mOhms	Active
EEU-FS1H331	Panasonic Electronic Components	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	5.00mm	10.00mm	22.00mm	23 mOhms	Active
EKZN500ELL331MJ20S	Chemi-Con	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	5.00mm	10.00mm	21.50mm	38 mOhms	Active

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original UHW1H331MPD. The primary distinction among substitutes is product status: Rubycon (50YXJ330M10X20, 50ZLH330MEFC10X20, 50ZLJ330M10X20), Panasonic (EEU-FS1H331), and Chemi-Con (EKZN500ELL331MJ20S) all carry Active product status, whereas the original Nichicon part is Not For New Designs.

For applications requiring the lowest impedance characteristic, EEU-FS1H331 (23 mOhms) provides the best performance. For applications with space constraints favoring the original 21.50mm height, EKZN500ELL331MJ20S matches the UHW1H331MPD footprint exactly. Rubycon parts offer multiple series options (YXJ, ZLH, ZLJ) with varying impedance profiles (60 mOhms, unspecified, 38 mOhms respectively) to accommodate different circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace UHW1H331MPD with any of these substitute parts?

A: Yes. All listed parts share identical capacitance (330 µF), voltage rating (50 V), tolerance (±20%), lifetime specification (10000 Hrs @ 105°C), operating temperature range (-40°C ~ 105°C), lead spacing (5.00mm), and case diameter (10.00mm). Height variation (21.50mm to 22.00mm) is within acceptable through-hole radial component tolerances.

Q: What is the difference between the Rubycon YXJ, ZLH, and ZLJ series?

A: These are distinct Rubycon product lines within the same electrical specification envelope. The primary differences are impedance values (60 mOhms for YXJ, 38 mOhms for ZLJ) and ripple current handling. Selection depends on circuit-specific ripple current requirements.

Q: Does impedance variation affect my circuit?

A: Impedance differences (ranging from 23 mOhms to 60 mOhms) impact ripple current handling and high-frequency performance. Applications with high ripple current demands should prioritize lower impedance options such as EEU-FS1H331 (23 mOhms) or EKZN500ELL331MJ20S (38 mOhms).

Q: Are all substitutes available in the same packaging?

A: Yes. All parts are supplied in bulk packaging as radial, can through-hole components with identical lead spacing and case diameter specifications.

Q: Which substitute offers the best inventory availability?

A: EKZN500ELL331MJ20S (Chemi-Con) has the highest reported inventory at 10,390 pieces. 50ZLJ330M10X20 (Rubycon) has 5,037 pieces available.

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