UFW1H331MPD1TD Equivalent & Substitute Parts

Part Overview

The UFW1H331MPD1TD is a 330 µF, 50 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 This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product portfolio. The UFW series is designed for audio applications with a rated lifetime of 2000 hours at 85°C and operating temperature range of -40°C to 85°C. Identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where original components may have limited availability or extended lead times.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height (Max)	0.689" (17.50 mm)
Mounting Type	Through Hole
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UFW1H331MPD1TD is determined by the following critical parameters: capacitance value (330 µF), voltage rating (50 V), tolerance (±20%), physical dimensions (0.394" diameter, 0.689" maximum height, 0.197" lead spacing), and through-hole radial mounting configuration. All substitute parts must match these core electrical and mechanical specifications to ensure direct compatibility in existing PCB layouts and circuit designs.

The substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalents (Nichicon): Parts from the same manufacturer with identical electrical ratings and mechanical dimensions but from different series (UKA, UVK, UVR, UKW). These represent current or recent production alternatives within Nichicon's portfolio.

Active Status Alternatives (Multi-Manufacturer): Parts from Panasonic Electronic Components, Würth Elektronik, and Chemi-Con that meet all electrical and mechanical requirements and carry Active product status, indicating current production and long-term availability.

Extended Temperature Variants: Parts with enhanced temperature ratings (105°C lifetime rating) that provide superior thermal performance while maintaining all other specifications.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Product Status	Inventory (Pcs)
UFW1H331MPD1TD	Nichicon	UFW	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	1059
UKA1H331MPD1TD	Nichicon	UKA	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	Not For New Designs	1373
UVK1H331MPD1TD	Nichicon	UVK	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	6069
UVR1H331MPD1TD	Nichicon	UVR	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	11119
UKW1H331MPD1TD	Nichicon	UKW	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	2003
ECA-1HM331B	Panasonic Electronic Components	M-A	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Active	82918
860010675019	Würth Elektronik	WCAP-ATG8	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Active	2159
860020675021	Würth Elektronik	WCAP-ATG5	330 µF	50 V	±20%	2000 Hrs @ 105°C	-40°C ~ 105°C	Active	1717
EEU-HD1H331B	Panasonic Electronic Components	HD	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	Active	1704
ESMG500ETD331MJ16S	Chemi-Con	SMG	330 µF	50 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	Active	848

Engineering Selection Recommendations

For Direct Replacement in Existing Designs: The Nichicon UVR1H331MPD1TD and UVK1H331MPD1TD offer the highest inventory availability (11119 and 6069 units respectively) among Nichicon alternatives. Both maintain identical electrical specifications and mechanical dimensions to the UFW1H331MPD1TD, ensuring pin-compatible installation without PCB modification.

For New Production or Long-Term Availability: The ECA-1HM331B from Panasonic Electronic Components is recommended as the primary substitute. This part carries Active product status, indicating current production and long-term supply commitment. With 82918 units in stock, it provides superior availability and supply chain stability compared to legacy Nichicon series.

For Enhanced Thermal Performance: The EEU-HD1H331B (Panasonic) and 860020675021 (Würth Elektronik) both offer extended temperature ratings (2000 hours at 105°C) and wider operating ranges (-55°C to 105°C). These are suitable for applications requiring improved thermal margin or operation in elevated ambient conditions.

For General Purpose Applications: The 860010675019 from Würth Elektronik (WCAP-ATG8 series) provides Active status with standard 85°C thermal rating and represents a robust alternative from an established industrial supplier.

All substitute parts listed are ROHS3 compliant and carry identical HTSUS and ECCN classifications, ensuring regulatory and export compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can I substitute UFW1H331MPD1TD with any of the listed parts without PCB modification?

A: Yes. All listed substitute parts share identical lead spacing (0.197" / 5.00 mm), diameter (0.394" / 10.00 mm), and maximum height (0.689" / 17.50 mm). Direct PCB hole-to-hole compatibility is maintained across all substitutes.

Q: What is the difference between the Nichicon UFW, UKA, UVK, UVR, and UKW series?

A: These represent different product series within Nichicon's aluminum electrolytic capacitor portfolio. The UFW, UVK, UVR, and UKW series share identical 85°C thermal ratings and -40°C to 85°C operating ranges. The UKA series offers an extended 105°C thermal rating with -55°C to 105°C operating range. All five series are classified as Not For New Designs.

Q: Why should I consider Active status parts like ECA-1HM331B or EEU-HD1H331B?

A: Active status indicates current production and manufacturer commitment to long-term supply. Parts classified as Not For New Designs may face eventual discontinuation and supply constraints. Active alternatives provide supply security for ongoing production and future repairs.

Q: Are there differences in ripple current handling between substitutes?

A: Yes. Ripple current specifications vary by series. The UFW1H331MPD1TD is rated for 570 mA at 120 Hz and 855 mA at 10 kHz. Alternatives range from 410 mA to 649 mA at 120 Hz depending on series. For applications with specific ripple current requirements, verify the substitute part's ripple current rating against circuit design specifications.

Q: What is the significance of the ±20% tolerance specification?

A: The ±20% tolerance indicates that actual capacitance values may range from 264 µF to 396 µF. This tolerance applies uniformly across all listed substitutes. Circuit designs must account for this tolerance range in their electrical calculations.

Q: Can I use parts with 105°C thermal ratings as direct replacements for 85°C rated parts?

A: Yes. Parts with higher thermal ratings (105°C) are backward compatible with applications designed for 85°C operation. The enhanced thermal capability provides additional margin and does not degrade performance in standard temperature environments.

Q: What packaging formats are available?

A: The UFW1H331MPD1TD is supplied in Cut Tape (CT) packaging. Substitute parts are available in Cut Tape (CT) or Tape & Box (TB) formats. Verify packaging format requirements for your procurement and assembly processes.

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