UFG1A331MPM Equivalent & Substitute Parts

Part Overview

The UFG1A331MPM is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, with a rated lifetime of 1000 hours at 85°C and designed for audio applications. Due to its obsolete status and limited thermal performance specifications, equivalent and substitute parts with improved reliability characteristics, extended operational temperature ranges, and longer service life are available from the same manufacturer.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Mounting Type	Through Hole
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for UFG1A331MPM is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V minimum (equal or higher voltage acceptable)
Package: Radial, Can with 0.197" (5.00 mm) lead spacing
Mounting: Through Hole
Polarization: Polar

Secondary Considerations:

Operating temperature range
Lifetime rating at specified temperature
Product status (active vs. obsolete)
Ripple current capability
Impedance characteristics

Substitute parts are grouped into two categories:

Category A - Direct 10V Replacements (Same Voltage Rating):

UBT1A331MPD8 (Nichicon UBT series, automotive-grade, 5000 Hrs @ 125°C)
UBW1A331MPD (Nichicon UBW series, automotive-grade, 2000 Hrs @ 135°C)
UKL1A331MPDANA (Nichicon UKL series, general purpose, 1000 Hrs @ 105°C)

Category B - Higher Voltage Ratings (16V, 25V, 35V):

UBT1C331MPD8 (16 V, automotive-grade, 5000 Hrs @ 125°C)
UBW1C331MPD (16 V, automotive-grade, 2000 Hrs @ 135°C)
UFW1E331MPD (25 V, audio-grade, 2000 Hrs @ 85°C)
UHV1V331MPD (35 V, general purpose, 6000 Hrs @ 105°C)
UKA1V331MPD (35 V, audio-grade, 2000 Hrs @ 105°C)
UPJ1C331MPD6 (16 V, general purpose, 5000 Hrs @ 105°C)
UPM1C331MPD6 (16 V, automotive-grade AEC-Q200, 5000 Hrs @ 105°C)

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Lifetime Rating	Operating Temp Range	Product Status	Applications	Height (Max)	Ripple Current @ 120 Hz
UFG1A331MPM	UFG	330 µF	10 V	1000 Hrs @ 85°C	-40°C ~ 85°C	Obsolete	Audio	0.551" (14.00 mm)	247 mA
UBT1A331MPD8	UBT	330 µF	10 V	5000 Hrs @ 125°C	-40°C ~ 125°C	Active	Automotive	0.571" (14.50 mm)	310 mA
UBT1C331MPD8	UBT	330 µF	16 V	5000 Hrs @ 125°C	-40°C ~ 125°C	Active	Automotive	0.571" (14.50 mm)	340 mA
UBW1A331MPD	UBW	330 µF	10 V	2000 Hrs @ 135°C	-55°C ~ 135°C	Active	Automotive	0.571" (14.50 mm)	310 mA
UBW1C331MPD	UBW	330 µF	16 V	2000 Hrs @ 135°C	-55°C ~ 135°C	Active	Automotive	0.571" (14.50 mm)	340 mA
UFW1E331MPD	UFW	330 µF	25 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	Audio	0.551" (14.00 mm)	420 mA
UHV1V331MPD	UHV	330 µF	35 V	6000 Hrs @ 105°C	-40°C ~ 105°C	Not For New Designs	General Purpose	0.551" (14.00 mm)	680 mA
UKA1V331MPD	UKA	330 µF	35 V	2000 Hrs @ 105°C	-55°C ~ 105°C	Not For New Designs	Audio	0.551" (14.00 mm)	350 mA
UKL1A331MPDANA	UKL	330 µF	10 V	1000 Hrs @ 105°C	-40°C ~ 105°C	Not For New Designs	General Purpose	0.531" (14.60 mm)	400 mA
UPJ1C331MPD6	UPJ	330 µF	16 V	5000 Hrs @ 105°C	-55°C ~ 105°C	Not For New Designs	General Purpose	0.551" (14.00 mm)	480 mA
UPM1C331MPD6	UPM	330 µF	16 V	5000 Hrs @ 105°C	-55°C ~ 105°C	Not For New Designs	Automotive	0.571" (14.50 mm)	510 mA

Engineering Selection Recommendations

For Direct Replacement (10V Rating):

UBT1A331MPD8 is the preferred active substitute. It maintains the 10 V voltage rating while providing significantly improved reliability with 5000 hours lifetime at 125°C versus the original 1000 hours at 85°C. The part is currently in active production status and ROHS3 compliant. Height increase from 14.00 mm to 14.50 mm must be verified for PCB clearance.

UBW1A331MPD offers extended operating temperature range (-55°C to 135°C) and is suitable for automotive applications requiring thermal robustness. Product status is active.

UKL1A331MPDANA maintains the original height specification (14.60 mm) but is classified as not for new designs. This part is suitable only for legacy system maintenance.

For Higher Voltage Applications:

UBT1C331MPD8 and UBW1C331MPD provide 16 V ratings with improved thermal performance. These are appropriate when circuit design permits higher voltage margins.

UPM1C331MPD6 is AEC-Q200 qualified for automotive applications requiring formal qualification documentation.

For Legacy Audio Applications:

UFW1E331MPD (25 V) and UKA1V331MPD (35 V) maintain audio-grade specifications but are classified as not for new designs. These are suitable for audio equipment redesigns where original specifications must be preserved.

Frequently Asked Questions (FAQ)

Q: Can UFG1A331MPM be directly replaced with UBT1A331MPD8?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), lead spacing (5.00 mm), and through-hole radial package configuration. The primary difference is improved lifetime rating (5000 Hrs @ 125°C vs. 1000 Hrs @ 85°C) and active product status. Height increases from 14.00 mm to 14.50 mm; verify PCB clearance before substitution.

Q: What is the difference between 10V and 16V rated parts?

A: Voltage rating indicates the maximum continuous DC voltage the capacitor can withstand. A 16V part can be used in 10V circuits with improved voltage margin and typically lower impedance. However, physical dimensions may differ. Verify all mechanical constraints before substitution.

Q: Are automotive-grade parts (UBT, UBW, UPM series) suitable for audio applications?

A: Automotive-grade parts meet stricter reliability and temperature specifications than audio-grade parts. They are functionally compatible with audio circuits and provide superior performance margins. No technical incompatibility exists; automotive parts represent an upgrade path.

Q: Why are some substitute parts marked "Not For New Designs"?

A: This designation indicates the manufacturer is transitioning away from these series. While functionally suitable for replacement and maintenance, they should not be selected for new product development. Active status parts (UBT, UBW series) are recommended for new designs.

Q: What is the significance of impedance values in the specification?

A: Impedance (measured in milliohms) affects ripple current handling and high-frequency performance. Lower impedance values indicate better performance at high frequencies. UBT1C331MPD8 (100 mOhms) provides superior high-frequency characteristics compared to UFG1A331MPM (not specified).

Q: Can height differences affect PCB layout?

A: Yes. UFG1A331MPM height is 14.00 mm; UBT and UBW series are 14.50 mm; UKL1A331MPDANA is 14.60 mm. Verify clearance to adjacent components, solder mask, and conformal coating requirements before substitution.

Q: Is ROHS3 compliance maintained across all substitute parts?

A: Yes. All listed substitute parts maintain ROHS3 compliance. REACH status varies; verify specific regulatory requirements for your application region.

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