UHD1E331MPD6TD Equivalent & Substitute Parts

Part Overview

The UHD1E331MPD6TD is a 330 µF, 25 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where original components are unavailable or inventory is depleted.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.551" (14.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 105°C
Lifetime @ 105°C	4000 Hrs
Polarization	Polar

Substitute Part Grouping Explanation

Substitute parts for the UHD1E331MPD6TD are grouped based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Package: Radial, Can (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.394" (10.00 mm) (exact match required)
Height: 0.551" (14.00 mm) (exact match required)
Mounting: Through Hole (exact match required)

Secondary Considerations:

Operating temperature range compatibility
Lifetime rating at 105°C
RoHS and REACH compliance status
Product status (Active vs. Not For New Designs)

All substitute parts listed meet the primary substitution criteria. Variations in ripple current ratings, impedance, and lifetime specifications indicate performance differences that may be relevant depending on application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp Range	Product Status	Impedance	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz
UHD1E331MPD6TD	Nichicon	UHD	330 µF	25 V	±20%	4000 Hrs	-40°C ~ 105°C	Not For New Designs	53 mOhms	42.5 mA	85 mA
EKZE250ETD331MJC5S	Chemi-Con	KZE	330 µF	25 V	±20%	4000 Hrs	-40°C ~ 105°C	Active	53 mOhms	515 mA	1.03 A
ELXZ250ETD331MJC5S	Chemi-Con	LXZ	330 µF	25 V	±20%	5000 Hrs	-55°C ~ 105°C	Active	90 mOhms	380 mA	760 mA
REA1013331M025K	KYOCERA AVX	REA	330 µF	25 V	±20%	4000 Hrs	-40°C ~ 105°C	Active	—	350 mA	490 mA
25ZLG330MEFCT810X12.5	Rubycon	ZLG	330 µF	25 V	±20%	4000 Hrs	-40°C ~ 105°C	Active	27 mOhms	786.5 mA	1.43 A
EEU-FM1E331B	Panasonic Electronic Components	FM-A	330 µF	25 V	±20%	4000 Hrs	-40°C ~ 105°C	Active	38 mOhms	903 mA	1.29 A

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance): EKZE250ETD331MJC5S (Chemi-Con KZE series) provides the closest electrical match with identical impedance (53 mOhms) and matching lifetime rating (4000 Hrs @ 105°C). This part is Active status and ROHS3 compliant, making it suitable for immediate deployment.

For Enhanced Reliability: ELXZ250ETD331MJC5S (Chemi-Con LXZ series) offers extended lifetime (5000 Hrs @ 105°C) and expanded operating temperature range (-55°C to 105°C). This part carries AEC-Q200 automotive qualification and is recommended for applications requiring higher reliability margins. REACH Unaffected status provides additional compliance advantage.

For High Ripple Current Applications: 25ZLG330MEFCT810X12.5 (Rubycon ZLG series) and EEU-FM1E331B (Panasonic FM-A series) deliver superior ripple current handling (1.43 A and 1.29 A @ 100 kHz respectively) with lower impedance values. These parts are suitable for applications with demanding AC ripple specifications.

For General Purpose Replacement: REA1013331M025K (KYOCERA AVX REA series) provides Active status with standard performance characteristics and is available in high inventory (1558 Pcs).

All substitute parts are ROHS3 compliant and share identical mechanical dimensions, ensuring direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for UHD1E331MPD6TD? A: Yes. All listed substitute parts match the critical electrical parameters (330 µF, 25 V, ±20% tolerance) and mechanical specifications (radial can package, 5.00 mm lead spacing, 10.00 mm diameter, 14.00 mm height). They are mechanically and electrically interchangeable on the PCB.

Q: What is the difference between "Upgrade" and "Parametric Equivalent" designations? A: Upgrade parts (EKZE250ETD331MJC5S, ELXZ250ETD331MJC5S, REA1013331M025K) are direct functional replacements with Active product status. Parametric Equivalent parts (25ZLG330MEFCT810X12.5, EEU-FM1E331B) meet all electrical and mechanical specifications but may have different performance characteristics such as ripple current handling or impedance.

Q: Does the difference in ripple current ratings affect compatibility? A: Ripple current ratings indicate the maximum AC current the capacitor can handle without exceeding temperature limits. Higher ripple current ratings provide additional design margin but do not affect basic compatibility. Selection depends on actual circuit ripple current requirements.

Q: Why does ELXZ250ETD331MJC5S have a higher impedance (90 mOhms) compared to the original part (53 mOhms)? A: Impedance differences reflect internal construction variations between manufacturers. The ELXZ series prioritizes extended lifetime (5000 Hrs) and automotive qualification (AEC-Q200) over impedance optimization. This trade-off is acceptable for applications not sensitive to impedance-dependent performance.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are ROHS3 compliant. REACH compliance varies: EKZE250ETD331MJC5S and ELXZ250ETD331MJC5S are REACH Unaffected; REA1013331M025K, 25ZLG330MEFCT810X12.5, and EEU-FM1E331B are REACH Unaffected.

Q: Which substitute part has the best inventory availability? A: EEU-FM1E331B (Panasonic) has the highest inventory at 8009 Pcs. EKZE250ETD331MJC5S (Chemi-Con) has 668 Pcs, ELXZ250ETD331MJC5S has 739 Pcs, REA1013331M025K has 1558 Pcs, and 25ZLG330MEFCT810X12.5 has 1038 Pcs.

Q: Can I use these parts in new designs? A: Yes. All substitute parts carry Active product status, making them suitable for new designs. The original UHD1E331MPD6TD is Not For New Designs and should not be used in new applications.

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