UHE1H331MPD Equivalent & Substitute Parts

Part Overview

The UHE1H331MPD is a 330 µF, 50 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product line. The UHE series offers a 7000-hour lifetime rating at 105°C and is suitable for general-purpose applications requiring through-hole mounting.

Finding equivalent and substitute parts is necessary due to the product's discontinued status for new designs. Alternative components with matching or superior electrical characteristics and current availability provide design flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ 105°C	7000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height	0.984" (25.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Substitution Criteria (Must Match):

Capacitance: 330 µF
Voltage Rating: 50 V (or higher for upgrade options)
Tolerance: ±20%
Polarization: Polar
Mounting Type: Through Hole
Package: Radial, Can
Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.394" (10.00 mm)

Secondary Consideration (Beneficial but Not Mandatory):

Lifetime @ 105°C: Equal to or greater than 7000 hours
Operating Temperature Range: -40°C ~ 105°C
RoHS3 Compliance

Substitution Categories:

Direct Equivalents (Same Voltage Rating - 50 V): Parts meeting all primary criteria with 50 V rating. These provide pin-for-pin compatibility and identical electrical performance envelope.

Similar Parts (Same Voltage Rating - 50 V): Parts meeting all primary criteria with 50 V rating but with different lifetime ratings. These are electrically compatible but may have different thermal performance characteristics.

Upgrade Options (Higher Voltage Rating - 63 V): Parts meeting all primary criteria but with 63 V rating instead of 50 V. These provide enhanced voltage margin and are mechanically and electrically compatible for applications where higher voltage headroom is acceptable.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Height (Max)	Impedance	Product Status	Inventory
UHE1H331MPD	Nichicon	330 µF	50 V	7000 Hrs	0.984" (25.00 mm)	55 mOhms	Not For New Designs	11558 Pcs
UHW1H331MPD	Nichicon	330 µF	50 V	10000 Hrs	0.846" (21.50 mm)	30 mOhms	Not For New Designs	5542 Pcs
UHD1H331MPD	Nichicon	330 µF	50 V	4000 Hrs	1.063" (27.00 mm)	28 mOhms	Not For New Designs	2569 Pcs
50ZLH330MEFC10X23	Rubycon	330 µF	50 V	10000 Hrs	0.984" (25.00 mm)	28 mOhms	Active	12716 Pcs
50ZLJ330M10X20	Rubycon	330 µF	50 V	10000 Hrs	0.866" (22.00 mm)	38 mOhms	Active	5037 Pcs
EEU-FS1H331	Panasonic Electronic Components	330 µF	50 V	10000 Hrs	0.866" (22.00 mm)	23 mOhms	Active	1436 Pcs
EKZN500ELL331MJ20S	Chemi-Con	330 µF	50 V	10000 Hrs	0.846" (21.50 mm)	38 mOhms	Active	10390 Pcs
EEU-FM1H331L	Panasonic Electronic Components	330 µF	50 V	5000 Hrs	1.063" (27.00 mm)	22 mOhms	Active	4312 Pcs
EKY-500ELL331MJ25S	Chemi-Con	330 µF	50 V	7000 Hrs	1.043" (26.50 mm)	55 mOhms	Active	2572 Pcs
63ZLH330MEFC10X23	Rubycon	330 µF	63 V	10000 Hrs	0.984" (25.00 mm)	69 mOhms	Active	27476 Pcs
EEU-FS1J331L	Panasonic Electronic Components	330 µF	63 V	10000 Hrs	1.004" (25.50 mm)	33 mOhms	Active	905 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Voltage, Active Status):

Select from parts with Active product status and 50 V rating for new designs. The 50ZLH330MEFC10X23 (Rubycon) offers identical height to the UHE1H331MPD with superior 10000-hour lifetime and lower impedance. The EKZN500ELL331MJ20S (Chemi-Con) provides equivalent electrical performance with Active status and high inventory availability.

For Space-Constrained Applications:

The 50ZLJ330M10X20 (Rubycon) and EEU-FS1H331 (Panasonic) both feature reduced height (0.866" / 22.00 mm) while maintaining 10000-hour lifetime ratings and Active product status. These are suitable where PCB height is limited.

For Thermal Performance Priority:

The EEU-FS1H331 (Panasonic) offers the lowest impedance at 23 mOhms among 50 V options, reducing heat generation in high-ripple-current applications.

For Voltage Margin Enhancement:

The 63ZLH330MEFC10X23 (Rubycon) and EEU-FS1J331L (Panasonic) provide 63 V rating with identical capacitance and tolerance. These are suitable for applications where increased voltage headroom improves reliability margins. Both maintain Active product status and 10000-hour lifetime.

Compliance Consideration:

All listed substitutes maintain ROHS3 compliance and REACH compliance status consistent with the original part, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can UHE1H331MPD be directly replaced with any of the listed substitutes?

A: Yes, all listed 50 V rated parts meet the primary substitution criteria: 330 µF capacitance, ±20% tolerance, polar configuration, through-hole mounting, 5.00 mm lead spacing, and 10.00 mm case diameter. Physical fit and electrical function are preserved. Height variations exist; verify PCB layout clearance before selection.

Q: What is the difference between "Direct Equivalent," "Similar," and "Upgrade" categories?

A: Direct Equivalents match the original voltage rating (50 V) with equal or superior lifetime ratings and Active product status. Similar parts match voltage and capacitance but may have different lifetime ratings. Upgrade options provide higher voltage rating (63 V) for enhanced voltage margin while maintaining mechanical compatibility.

Q: Does selecting a higher voltage rating (63 V) affect circuit performance?

A: No. A 63 V rated capacitor operates safely in a 50 V circuit. The higher voltage rating provides additional safety margin without altering capacitance, tolerance, or frequency response. Impedance values differ slightly; verify ripple current handling if critical to the application.

Q: Are there height restrictions I should consider?

A: Yes. The original UHE1H331MPD is 0.984" (25.00 mm) tall. Substitutes range from 0.846" to 1.063" in height. Verify PCB layout and component clearance, particularly for space-constrained designs. Shorter options (0.846" / 22.00 mm) are available from Rubycon and Chemi-Con.

Q: Which substitute offers the best thermal performance?

A: The EEU-FS1H331 (Panasonic) features the lowest impedance at 23 mOhms, reducing resistive heating in high-ripple-current applications. The 50ZLH330MEFC10X23 (Rubycon) offers 28 mOhms impedance with identical height to the original part.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance, ensuring regulatory alignment with the original UHE1H331MPD.

Q: What is the inventory status of these substitutes?

A: All listed substitutes are in stock. The 63ZLH330MEFC10X23 (Rubycon) has the highest inventory at 27476 pieces. The EEU-FS1J331L (Panasonic) has the lowest at 905 pieces. Verify current availability with your supplier for production quantities.

Q: Can I use UHD1H331MPD as a substitute despite its lower lifetime rating?

A: UHD1H331MPD meets all primary substitution criteria but offers only 4000-hour lifetime at 105°C compared to the original 7000 hours. This part is suitable only if application thermal stress is minimal or if the reduced lifetime is acceptable for the intended use case. Product status is Not For New Designs.

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