UPB1E331MPD Equivalent & Substitute Parts

Part Overview

The UPB1E331MPD is a 330 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 7000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and ripple current handling.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage - Rated	25 V
Lifetime @ Temperature	7000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Lead Spacing	0.197" (5.00mm)
Size / Dimension	0.394" Dia (10.00mm)
Height - Seated (Max)	0.551" (14.00mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
Ripple Current @ 120 Hz	255 mA
Ripple Current @ 100 kHz	331.5 mA

Substitute Part Grouping Explanation

Substitution for the UPB1E331MPD is determined by strict equivalence across the following parameters: capacitance (330 µF), tolerance (±20%), rated voltage (25 V), polarization (polar), mounting type (through hole), and package type (radial, can). Parts are grouped into three categories based on provided specifications:

Direct Equivalents (Same Voltage Rating - 25V): Parts maintaining identical electrical ratings and physical dimensions with the same 5.00mm lead spacing and 10.00mm diameter. These include UHE1E331MPD6, UHD1E331MPD, UHE1E331MPD, UHV1E331MPD, and UTT1E331MPD from Nichicon, plus EEU-EB1E331 from Panasonic. Differences exist in lifetime ratings, ripple current capabilities, and impedance characteristics, but all meet the core electrical and mechanical requirements.

Upgraded Alternatives (Higher Voltage Rating - 35V): Parts with increased voltage rating (35 V) provide enhanced safety margin in applications. These include 35YXJ330M10X12.5 and 35ZLH330MEFC10X12.5 from Rubycon, EKYB350ELL331MJC5S from Chemi-Con, and B41888C5337M from EPCOS. Higher voltage rating allows operation in circuits with voltage transients while maintaining identical capacitance and physical footprint compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Size Dia	Height (Max)	Ripple @ 120Hz	Ripple @ 100kHz	Product Status
UPB1E331MPD	Nichicon	330 µF	25 V	7000 Hrs	5.00mm	10.00mm	14.00mm	255 mA	331.5 mA	Obsolete
UHE1E331MPD6	Nichicon	330 µF	25 V	7000 Hrs	5.00mm	10.00mm	12.50mm	605.5 mA	865 mA	Not For New Designs
UHD1E331MPD	Nichicon	330 µF	25 V	3000 Hrs	4.60mm	8.00mm	16.50mm	696.5 mA	995 mA	Not For New Designs
UHE1E331MPD	Nichicon	330 µF	25 V	7000 Hrs	4.60mm	8.00mm	15.00mm	588 mA	840 mA	Not For New Designs
UHV1E331MPD	Nichicon	330 µF	25 V	6000 Hrs	4.60mm	8.00mm	13.00mm	495 mA	990 mA	Not For New Designs
UTT1E331MPD	Nichicon	330 µF	25 V	5000 Hrs	4.60mm	8.00mm	11.50mm	178.8 mA	298 mA	Obsolete
EEU-EB1E331	Panasonic	330 µF	25 V	10000 Hrs	4.60mm	8.00mm	16.00mm	255 mA	331.5 mA	Active
35YXJ330M10X12.5	Rubycon	330 µF	35 V	10000 Hrs	5.00mm	10.00mm	14.00mm	605.5 mA	865 mA	Active
35ZLH330MEFC10X12.5	Rubycon	330 µF	35 V	10000 Hrs	5.00mm	10.00mm	14.00mm	731.5 mA	1.33 A	Active
B41888C5337M	EPCOS - TDK Electronics	330 µF	25 V	7000 Hrs	5.00mm	10.00mm	14.60mm	—	900 mA	Active
EKYB350ELL331MJC5S	Chemi-Con	330 µF	35 V	10000 Hrs	5.00mm	10.00mm	14.00mm	525 mA	1.05 A	Active

Engineering Selection Recommendations

For direct replacement in existing designs, UHE1E331MPD6 from Nichicon provides identical electrical specifications with improved ripple current handling and maintains the same 5.00mm lead spacing and 10.00mm diameter as the original UPB1E331MPD. This part is available in higher inventory quantities and offers superior performance characteristics.

For new designs, EEU-EB1E331 from Panasonic is recommended as an active product with extended 10000-hour lifetime at 105°C, ROHS3 compliance, and equivalent electrical ratings. This part eliminates obsolescence risk while maintaining full compatibility with the original specifications.

For applications requiring enhanced voltage margin or improved ripple current performance, upgraded alternatives with 35 V rating are available. The 35YXJ330M10X12.5 from Rubycon and EKYB350ELL331MJC5S from Chemi-Con maintain identical physical footprint (5.00mm lead spacing, 10.00mm diameter, 14.00mm height) while providing 10000-hour lifetime ratings and active product status.

For automotive applications requiring AEC-Q200 qualification, B41888C5337M from EPCOS provides equivalent electrical performance with extended operating temperature range (-55°C to 105°C) and automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can UHE1E331MPD6 directly replace UPB1E331MPD in existing PCB layouts?

A: Yes. UHE1E331MPD6 maintains identical lead spacing (5.00mm) and diameter (10.00mm) as the original part. Height difference (12.50mm vs 14.00mm) provides additional clearance margin. Electrical specifications are equivalent across capacitance, voltage, tolerance, and operating temperature range.

Q: What is the difference between 25V and 35V rated alternatives?

A: The 35V alternatives (35YXJ330M10X12.5, EKYB350ELL331MJC5S) provide higher voltage rating while maintaining identical capacitance and physical dimensions. These parts are suitable for circuits with voltage transients or where additional safety margin is required. They are not interchangeable in applications where the 25V rating is a design constraint.

Q: Why do some substitutes have different lead spacing (4.60mm vs 5.00mm)?

A: Parts with 4.60mm lead spacing (UHD1E331MPD, UHE1E331MPD, UHV1E331MPD, UTT1E331MPD, EEU-EB1E331) require PCB layout modification and cannot be used as direct drop-in replacements. These parts are suitable only for new designs where PCB layout can be adjusted.

Q: Which substitute offers the longest operational lifetime?

A: EEU-EB1E331, 35YXJ330M10X12.5, 35ZLH330MEFC10X12.5, and EKYB350ELL331MJC5S all provide 10000-hour lifetime at 105°C, compared to the original part's 7000-hour rating.

Q: Is RoHS3 compliance required for substitution?

A: RoHS3 compliance is provided by most active alternatives (UHE1E331MPD6, UHD1E331MPD, UHE1E331MPD, UHV1E331MPD, UTT1E331MPD, EEU-EB1E331, 35YXJ330M10X12.5, 35ZLH330MEFC10X12.5, B41888C5337M, EKYB350ELL331MJC5S). Verify compliance requirements for your specific application before selection.

Q: What is the impedance difference between substitutes?

A: Impedance varies across alternatives, ranging from 39 mOhms (35ZLH330MEFC10X12.5) to 400 mOhms (UTT1E331MPD). Lower impedance values indicate better high-frequency ripple current performance. Select based on your circuit's ripple current requirements at operating frequency.

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