Equivalent & Substitute Parts for UVK1E331MPD

Part Overview

The UVK1E331MPD is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 2000 hours at 85°C and is classified as Not For New Designs. Due to its obsolescence status, equivalent and substitute parts from active product lines or higher-performance series are necessary for ongoing production and design updates. Substitutes must maintain the core electrical specifications (330 µF capacitance, 25 V rating, ±20% tolerance) while accommodating variations in thermal performance, ripple current handling, and mechanical dimensions.

Key Parameters

Parameter	UVK1E331MPD
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.138" (4.60mm)
Case Diameter	0.315" Dia (8.00mm)
Height (Seated Max)	0.512" (13.00mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Electrical Match: Capacitance (330 µF), voltage rating (25 V), and tolerance (±20%) must be identical
Mechanical Compatibility: Lead spacing (0.138" / 4.60mm), case diameter (0.315" / 8.00mm), and height (0.512" / 13.00mm) must match for direct PCB compatibility
Thermal Performance: Operating temperature range and lifetime rating determine suitability for specific applications
Compliance: RoHS3 compliance required; REACH status noted for supply chain considerations

Substitutes are categorized as follows:

Direct Substitutes (Identical Mechanical Footprint, Same Lead Spacing 4.60mm)

UPA1E331MPD (Nichicon UPA series, Active status, extended thermal range)
UHV1E331MPD (Nichicon UHV series, higher lifetime rating)
UKA1E331MPD (Nichicon UKA series, audio-grade application)
25YXJ330M8X11.5 (Rubycon YXJ series, Active status)
25ZLH330MEFC8X11.5 (Rubycon ZLH series, Active status, highest lifetime)
25ZLS330MEFC8X11.5 (Rubycon ZLS series, Active status)
337CKE025M (Cornell Dubilier CKE series, Active status)
ECA-1EM331 (Panasonic M-A series, Active status)
ECA-1EM331BJ (Panasonic M-A series, tape & box packaging, Active status)

Similar Substitute (Different Mechanical Footprint, Lead Spacing 5.00mm)

UVR1E331MPD (Nichicon UVR series, larger case diameter 0.394" / 10.00mm, height 0.551" / 14.00mm)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Case Dia	Height	Product Status	RoHS
UVK1E331MPD	Nichicon	UVK	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	ROHS3
UPA1E331MPD	Nichicon	UPA	330 µF	25 V	±20%	3000 Hrs @ 105°C	-55°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Active	ROHS3
UHV1E331MPD	Nichicon	UHV	330 µF	25 V	±20%	6000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	ROHS3
UKA1E331MPD	Nichicon	UKA	330 µF	25 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	ROHS3
UVR1E331MPD	Nichicon	UVR	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.394" (10.00mm)	0.551" (14.00mm)	Not For New Designs	ROHS3
25YXJ330M8X11.5	Rubycon	YXJ	330 µF	25 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Active	ROHS3
25ZLH330MEFC8X11.5	Rubycon	ZLH	330 µF	25 V	±20%	8000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Active	ROHS3
25ZLS330MEFC8X11.5	Rubycon	ZLS	330 µF	25 V	±20%	6000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Active	ROHS3
337CKE025M	Cornell Dubilier / Illinois Capacitor	CKE	330 µF	25 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Active	ROHS3
ECA-1EM331	Panasonic Electronic Components	M-A	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.138" (4.60mm)	0.315" (8.00mm)	0.492" (12.50mm)	Active	ROHS3
ECA-1EM331BJ	Panasonic Electronic Components	M-A	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.138" (4.60mm)	0.315" (8.00mm)	0.492" (12.50mm)	Active	ROHS3

Engineering Selection Recommendations

For Direct PCB Replacement (Identical Footprint)

Select from parts with lead spacing 0.138" (4.60mm), case diameter 0.315" (8.00mm), and height 0.512" (13.00mm):

UPA1E331MPD: Nichicon Active product with extended thermal range (-55°C ~ 105°C) and 3000-hour lifetime at 105°C. Recommended for applications requiring improved temperature performance over the original UVK1E331MPD.
25YXJ330M8X11.5 or 25ZLH330MEFC8X11.5: Rubycon Active products with superior lifetime ratings (7000 and 8000 hours respectively at 105°C). Suitable for long-life applications.
25ZLS330MEFC8X11.5: Rubycon Active product with 6000-hour lifetime at 105°C, offering balanced performance and availability.
337CKE025M: Cornell Dubilier Active product with 2000-hour lifetime at 105°C, suitable for bypass and decoupling applications.
ECA-1EM331 or ECA-1EM331BJ: Panasonic Active products with thermal performance matching the original (2000 hours at 85°C). ECA-1EM331BJ is available in tape & box packaging for automated assembly.

For Applications Tolerating Larger Footprint

UVR1E331MPD: Nichicon part with larger mechanical dimensions (lead spacing 0.197" / 5.00mm, case diameter 0.394" / 10.00mm, height 0.551" / 14.00mm). Use only if PCB layout permits the increased size.

Compliance Considerations

All listed substitutes are ROHS3 compliant. Verify REACH status with supplier if supply chain documentation is required for your application.

Frequently Asked Questions (FAQ)

Q: Can I use UVR1E331MPD as a direct replacement for UVK1E331MPD?

A: No. UVR1E331MPD has different mechanical dimensions (larger lead spacing, case diameter, and height). It is a similar electrical substitute only if your PCB layout accommodates the larger footprint. Direct PCB replacement requires matching lead spacing (0.138" / 4.60mm) and case dimensions.

Q: What is the difference between Nichicon UPA1E331MPD and the original UVK1E331MPD?

A: Both are 330 µF, 25 V capacitors with identical mechanical footprints. UPA1E331MPD is an Active product with extended thermal range (-55°C ~ 105°C versus -40°C ~ 85°C) and longer lifetime (3000 hours at 105°C versus 2000 hours at 85°C). UPA1E331MPD is suitable for replacement in new designs.

Q: Why do some substitutes have different heights (e.g., ECA-1EM331 at 0.492" versus UVK1E331MPD at 0.512")?

A: ECA-1EM331 has a slightly shorter seated height (0.492" versus 0.512"). This minor difference (0.020") typically does not affect PCB compatibility but should be verified against your specific board layout and clearance requirements.

Q: Are Rubycon 25YXJ330M8X11.5 and 25ZLH330MEFC8X11.5 interchangeable with Nichicon parts?

A: Yes, for electrical and mechanical purposes. Both Rubycon parts have identical lead spacing (0.138" / 4.60mm), case diameter (0.315" / 8.00mm), and height (0.512" / 13.00mm) as the original UVK1E331MPD. Rubycon parts offer higher lifetime ratings (7000 and 8000 hours at 105°C respectively) and are Active products.

Q: What does "Not For New Designs" mean for UVK1E331MPD?

A: This product status indicates the part is obsolete or being phased out by the manufacturer. New designs should use Active alternatives such as UPA1E331MPD, Rubycon YXJ/ZLH/ZLS series, or Panasonic ECA-1EM series.

Q: Which substitute offers the longest operational lifetime?

A: 25ZLH330MEFC8X11.5 (Rubycon ZLH series) with 8000 hours at 105°C, followed by 25YXJ330M8X11.5 (Rubycon YXJ series) with 7000 hours at 105°C.

Q: Can I use ECA-1EM331BJ in manual assembly applications?

A: ECA-1EM331BJ is packaged in Tape & Box (TB) format, designed for automated pick-and-place assembly. ECA-1EM331 in Bulk packaging is more suitable for manual assembly or small-volume production.

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