UMA0G331MDD Equivalent & Substitute Parts

Part Overview

The UMA0G331MDD is a 330 µF, 4 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 85°C and operates across a temperature range of -40°C to 85°C, serving general-purpose applications requiring stable capacitance and ripple current handling.

Substiute Parts

UMA0G331MDD

NichiconIn Stock: 1163UMA0G331MDD Datasheet

Current PartRFQ

RL81C331MDN1

NichiconIn Stock: 1115RL81C331MDN1 Datasheet

SimilarRFQ

UVR1C331MPD

NichiconIn Stock: 3861UVR1C331MPD Datasheet

SimilarRFQ

UWX0G331MCL1GB

NichiconIn Stock: 3500UWX0G331MCL1GB Datasheet

SimilarRFQ

ECE-A0GKA331

Panasonic Electronic ComponentsIn Stock: 1083ECE-A0GKA331 Datasheet

SimilarRFQ

ECE-A0GKA331I

Panasonic Electronic ComponentsIn Stock: 941ECE-A0GKA331I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the UMA0G331MDD is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 4 V minimum (equal or higher voltage acceptable)
• Polarization: Polar (required for electrolytic type)
• Mounting Type: Through Hole (for direct PCB compatibility)
• Package Type: Radial, Can (mechanical fit requirement)
• Operating Temperature Range: -40°C ~ 85°C minimum (or compatible subset)

Secondary Compatibility Factors:

• Lead Spacing: 0.098" (2.50mm) preferred for direct footprint compatibility
• Physical Dimensions: 0.315" diameter preferred; height variation acceptable within design constraints
• Ripple Current Ratings: Must support application requirements at specified frequencies

Substitute parts are grouped into two categories: direct through-hole radial can replacements with matching lead spacing, and alternative configurations that maintain electrical equivalence while accommodating design flexibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Preferred for Through-Hole Applications):

ECE-A0GKA331 and ECE-A0GKA331I are the primary recommended substitutes. Both are manufactured by Panasonic Electronic Components with active product status, ensuring long-term availability. These parts maintain identical capacitance (330 µF), tolerance (±20%), voltage rating (4 V), and lead spacing (0.098" / 2.50mm) as the UMA0G331MDD. The matching lead spacing enables direct PCB footprint compatibility without layout modifications. Both parts are ROHS3 compliant and operate within the required temperature range (-40°C ~ 85°C). The primary difference between these two is packaging: ECE-A0GKA331 is supplied in bulk, while ECE-A0GKA331I is supplied in tape and box format. Note that these parts have a reduced lifetime rating of 1000 hours at 85°C compared to the original 2000 hours; this must be evaluated against application requirements.

Alternative Substitutes (Higher Voltage Rating):

UVR1C331MPD is a Nichicon aluminum electrolytic capacitor with 16 V rating, providing voltage margin above the original 4 V specification. This part maintains the 330 µF capacitance and ±20% tolerance. However, the lead spacing is 0.138" (4.60mm), requiring PCB layout verification for compatibility. The product status is "Not For New Designs," limiting its suitability for new development. UVR1C331MPD is suitable only for maintenance and repair of existing equipment where the larger lead spacing accommodates the existing PCB footprint.

Polymer Alternative (Enhanced Performance):

RL81C331MDN1 is a Nichicon aluminum-polymer capacitor with 16 V rating and significantly enhanced ripple current capability (500 mA @ 120 Hz, 5 A @ 100 kHz compared to 145 mA and 217.5 mA respectively). This part features active product status and extended temperature range (-55°C ~ 105°C). However, the lead spacing is 0.138" (4.60mm) and height is 0.354" (9.00mm), requiring PCB design verification. The polymer construction provides lower ESR (12 mOhm) and superior thermal performance. This substitute is appropriate for applications requiring enhanced ripple current handling or extended temperature operation, provided PCB layout accommodates the different lead spacing.

Surface Mount Alternative:

UWX0G331MCL1GB is a surface-mount variant with identical electrical specifications to the original part (330 µF, 4 V, ±20% tolerance). This part is suitable only for designs transitioning to surface-mount technology and is not a direct replacement for through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 16 V rated capacitor in place of the 4 V UMA0G331MDD?

A: Yes. Higher voltage ratings are electrically compatible with lower voltage applications. The 16 V rated substitutes (UVR1C331MPD and RL81C331MDN1) will function correctly in circuits designed for 4 V operation. However, verify that the different lead spacing (0.138" vs. 0.098") accommodates your PCB footprint.

Q: What is the difference between ECE-A0GKA331 and ECE-A0GKA331I?

A: Both parts are electrically identical 330 µF, 4 V Panasonic capacitors with matching lead spacing (0.098" / 2.50mm). The difference is packaging: ECE-A0GKA331 is supplied in bulk, while ECE-A0GKA331I is supplied in tape and box format. Select based on your procurement and assembly requirements.

Q: Why does the RL81C331MDN1 have much higher ripple current ratings?

A: RL81C331MDN1 uses aluminum-polymer construction instead of standard aluminum electrolytic technology. Polymer capacitors have lower internal resistance (ESR), enabling higher ripple current handling. This makes RL81C331MDN1 suitable for applications with demanding ripple current requirements, provided the different lead spacing (0.138" / 4.60mm) is compatible with your PCB layout.

Q: Is the reduced lifetime rating of Panasonic parts (1000 hrs vs. 2000 hrs) a concern?

A: The lifetime rating depends on your application's thermal and operational profile. If your circuit operates continuously at 85°C with sustained ripple current, the reduced 1000-hour rating may be insufficient. For typical applications operating below maximum temperature and ripple current specifications, the 1000-hour rating is adequate. Evaluate your specific operating conditions before selection.

Q: Can I use the surface-mount UWX0G331MCL1GB as a replacement?

A: No, not as a direct replacement. The UWX0G331MCL1GB is designed for surface-mount assembly and requires different PCB pads and soldering processes. Use this part only if you are redesigning the circuit for surface-mount technology.

Q: What does "Not For New Designs" mean for the UVR1C331MPD?

A: This designation indicates that Nichicon has discontinued this part for new product development. While the part remains available for maintenance and repair of existing equipment, it should not be selected for new designs. For new applications, choose ECE-A0GKA331, ECE-A0GKA331I, or RL81C331MDN1.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original UMA0G331MDD. All parts are also REACH unaffected and classified as EAR99 for export purposes.