UHC1E331MPD Equivalent & Substitute Parts

Part Overview

The UHC1E331MPD 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 is rated for 2000 hours at 105°C and is suitable for high-temperature reflow applications. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)
Diameter	0.394" (10.00mm)
Height	0.630" (16.00mm)

Substitute Part Grouping Explanation

Substitution of the UHC1E331MPD is determined by the following critical parameters:

Electrical Compatibility: Capacitance (330 µF), voltage rating (25 V minimum), and tolerance (±20%) must match or exceed the original specification. Parts rated at higher voltages (35 V) are electrically compatible and provide improved voltage margin.

Thermal Performance: Lifetime rating at 105°C and operating temperature range determine suitability for the application. Extended lifetime ratings provide enhanced reliability.

Physical Compatibility: Lead spacing, package diameter, and height must accommodate the PCB layout. Parts with identical or smaller physical dimensions are mechanically compatible.

Compliance & Status: RoHS3 compliance and product status (Active vs. Not For New Designs vs. Obsolete) influence long-term availability and regulatory acceptance.

Substitute parts are grouped into three categories:

Upgrade Parts: Higher voltage rating (35 V) or extended lifetime, maintaining identical physical footprint.

Similar Parts: Equivalent electrical specifications with variations in physical dimensions or thermal performance.

Cross-Manufacturer Alternatives: Panasonic equivalents meeting the same electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Diameter	Height	Product Status	RoHS3
UHC1E331MPD	Nichicon	330 µF	25 V	2000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.630" (16.00mm)	Obsolete	—
UHE1V331MPD	Nichicon	330 µF	35 V	7000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.630" (16.00mm)	Not For New Designs	ROHS3 Compliant
UPJ1E331MPD6	Nichicon	330 µF	25 V	5000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.650" (16.50mm)	Not For New Designs	ROHS3 Compliant
UPW1V331MPD	Nichicon	330 µF	35 V	5000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.630" (16.00mm)	Not For New Designs	ROHS3 Compliant
UHD1E331MPD	Nichicon	330 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.650" (16.50mm)	Not For New Designs	ROHS3 Compliant
UHE1E331MPD	Nichicon	330 µF	25 V	7000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.591" (15.00mm)	Not For New Designs	ROHS3 Compliant
UHE1E331MPD6	Nichicon	330 µF	25 V	7000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.492" (12.50mm)	Not For New Designs	ROHS3 Compliant
UHV1E331MPD	Nichicon	330 µF	25 V	6000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	ROHS3 Compliant
UTT1E331MPD	Nichicon	330 µF	25 V	5000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	Obsolete	ROHS3 Compliant
EEU-EB1V331	Panasonic Electronic Components	330 µF	35 V	10000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.669" (17.00mm)	Active	ROHS3 Compliant
EEU-FC1V331	Panasonic Electronic Components	330 µF	35 V	3000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.630" (16.00mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Footprint Replacement (Identical Lead Spacing and Diameter):

UHE1E331MPD6 and UHE1V331MPD are direct mechanical replacements with identical lead spacing (0.197", 5.00mm) and diameter (0.394", 10.00mm). UHE1E331MPD6 maintains 25 V rating with extended 7000-hour lifetime. UHE1V331MPD upgrades to 35 V with 7000-hour lifetime, providing improved voltage margin and thermal performance.

Voltage-Upgraded Alternatives:

UPW1V331MPD and EEU-EB1V331 provide 35 V rating with identical lead spacing and diameter. UPW1V331MPD offers 5000-hour lifetime, while EEU-EB1V331 (Panasonic, Active status) provides 10000-hour lifetime with ROHS3 compliance, ensuring long-term availability.

Compact Footprint Options:

UHD1E331MPD, UHE1E331MPD, UHV1E331MPD, and UTT1E331MPD feature reduced lead spacing (0.138", 4.60mm) and smaller diameter (0.315", 8.00mm). These are suitable only if PCB layout accommodates the smaller footprint. UHE1E331MPD and UHV1E331MPD offer extended lifetime ratings (7000 and 6000 hours respectively).

Compliance Considerations:

All Nichicon substitute parts are ROHS3 compliant except the original UHC1E331MPD. Panasonic alternatives (EEU-EB1V331, EEU-FC1V331) are Active status with ROHS3 compliance, supporting regulatory requirements and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in place of the 25 V UHC1E331MPD?

A: Yes. A 35 V rated capacitor is electrically compatible and provides improved voltage margin. The higher voltage rating does not degrade performance in a 25 V application. UHE1V331MPD, UPW1V331MPD, EEU-EB1V331, and EEU-FC1V331 are all suitable 35 V alternatives.

Q: What is the impact of different lifetime ratings?

A: Lifetime rating indicates hours of operation at 105°C before capacitance degradation reaches 80% of initial value. Extended lifetime (5000+ hours) provides improved reliability and longer service life. The original UHC1E331MPD is rated 2000 hours; substitutes with 5000, 6000, 7000, or 10000-hour ratings offer enhanced durability.

Q: Are compact footprint parts (4.60mm lead spacing) direct replacements?

A: No. Compact parts (UHD1E331MPD, UHE1E331MPD, UHV1E331MPD, UTT1E331MPD) have reduced lead spacing (0.138", 4.60mm) versus the original (0.197", 5.00mm). These require PCB redesign and are suitable only if layout permits the smaller footprint.

Q: What is the difference between Nichicon and Panasonic alternatives?

A: Both manufacturers provide equivalent electrical specifications. Panasonic alternatives (EEU-EB1V331, EEU-FC1V331) are Active status, ensuring ongoing availability. EEU-EB1V331 offers the highest lifetime rating (10000 hours). EEU-FC1V331 includes AEC-Q200 automotive qualification.

Q: Can I use UPJ1E331MPD6 if the height is 0.650" instead of 0.630"?

A: Yes, if PCB clearance permits the additional 0.020" (0.50mm) height. UPJ1E331MPD6 maintains identical lead spacing and diameter, requiring only vertical clearance verification.

Q: Which substitute offers the best long-term availability?

A: EEU-EB1V331 (Panasonic, Active status) provides the best supply chain continuity. All Nichicon alternatives are classified as Not For New Designs or Obsolete, limiting future availability.

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