UPB1A331MPD1TD Equivalent & Substitute Parts

Part Overview

The Nichicon UPB1A331MPD1TD is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 5000 hours at 105°C. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing production and maintenance applications. The UPB series has been superseded by newer designs offering improved performance characteristics, extended operational lifetimes, and enhanced compliance certifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	5000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.138" (4.60 mm)
Package Type	Radial, Can
Mounting Type	Through Hole
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.512" (13.00 mm)

Substitute Part Grouping Explanation

Substitution of the UPB1A331MPD1TD is determined by the following critical parameters:

Capacitance Value: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: Minimum 10 V (equal or higher acceptable)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.138" (4.60 mm) for direct PCB compatibility
Physical Dimensions: 0.315" Dia × 0.512" Height (exact match required)
Mounting Type: Through Hole (exact match required)
Operating Temperature Range: -40°C ~ 105°C (minimum requirement)

Substitute parts are grouped into two categories:

Direct Equivalents (10 V rated, identical lead spacing): Parts maintaining the original 10 V voltage specification with 0.138" (4.60 mm) lead spacing, ensuring drop-in replacement capability.

Voltage Upgrades (16 V or 25 V rated, identical lead spacing): Parts with higher voltage ratings and 0.138" (4.60 mm) lead spacing, suitable for applications where increased voltage margin is beneficial.

Lead Spacing Variant (10 V rated, 0.197" lead spacing): Rubycon 10YXM330MEFRTA8X11.5 with 0.197" (5.00 mm) lead spacing, requiring PCB modification for installation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Product Status	RoHS Status
UPB1A331MPD1TD	Nichicon	330 µF	10 V	±20%	5000 Hrs	0.138" (4.60 mm)	Obsolete	REACH Unaffected
UHE1C331MPD1TD	Nichicon	330 µF	16 V	±20%	7000 Hrs	0.138" (4.60 mm)	Not For New Designs	ROHS3 Compliant
10YXM330MEFRT78X11.5	Rubycon	330 µF	10 V	±20%	10000 Hrs	0.138" (4.60 mm)	Active	ROHS3 Compliant
10YXM330MEFRTA8X11.5	Rubycon	330 µF	10 V	±20%	10000 Hrs	0.197" (5.00 mm)	Active	ROHS3 Compliant
860240274006	Würth Elektronik	330 µF	10 V	±20%	8000 Hrs	0.138" (4.60 mm)	Active	ROHS3 Compliant
860040374005	Würth Elektronik	330 µF	16 V	±20%	7000 Hrs	0.138" (4.60 mm)	Active	ROHS3 Compliant
860160274017	Würth Elektronik	330 µF	10 V	±20%	7000 Hrs	0.138" (4.60 mm)	Active	ROHS3 Compliant
EKZH250ETD331MHB5D	Chemi-Con	330 µF	25 V	±20%	6000 Hrs	0.138" (4.60 mm)	Active	ROHS3 Compliant
EKZM250ETD331MHB5D	Chemi-Con	330 µF	25 V	±20%	8000 Hrs	0.138" (4.60 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Drop-In Replacement (10 V, 0.138" Lead Spacing):

The Rubycon 10YXM330MEFRT78X11.5 and Würth Elektronik 860240274006 are the primary candidates. Both maintain the original 10 V voltage specification and 0.138" (4.60 mm) lead spacing for direct PCB compatibility. The Rubycon part offers extended lifetime (10000 hours at 105°C) compared to the original 5000 hours. The Würth Elektronik part provides 8000 hours lifetime. Both are active products with ROHS3 compliance.

For Voltage-Upgraded Applications (16 V or 25 V, 0.138" Lead Spacing):

The Nichicon UHE1C331MPD1TD, Würth Elektronik 860040374005, Chemi-Con EKZH250ETD331MHB5D, and Chemi-Con EKZM250ETD331MHB5D provide higher voltage ratings while maintaining identical physical dimensions and lead spacing. These are suitable for designs requiring increased voltage margin. The Würth Elektronik 860040374005 and Chemi-Con parts are active products with full ROHS3 compliance.

For Extended Temperature Range:

The Würth Elektronik 860160274017 extends the operating temperature range to -55°C ~ 105°C, providing enhanced performance in extreme cold environments while maintaining the 10 V specification and 0.138" lead spacing.

For Alternative Lead Spacing (10 V, 0.197" Lead Spacing):

The Rubycon 10YXM330MEFRTA8X11.5 offers identical electrical specifications and extended lifetime but requires PCB modification due to the 0.197" (5.00 mm) lead spacing. This option is suitable only when PCB redesign is feasible.

Frequently Asked Questions (FAQ)

Q: Can I use a 16 V or 25 V rated capacitor in place of the 10 V UPB1A331MPD1TD?

A: Yes. Higher voltage-rated capacitors are electrically compatible with lower voltage applications. The 16 V and 25 V options provide additional voltage margin and are suitable for direct substitution when physical dimensions and lead spacing match.

Q: What is the significance of lead spacing in substitution?

A: Lead spacing determines PCB hole alignment. The original part uses 0.138" (4.60 mm) spacing. The Rubycon 10YXM330MEFRTA8X11.5 uses 0.197" (5.00 mm) spacing and requires PCB modification. All other substitutes maintain 0.138" spacing for direct installation.

Q: Why do some substitutes have longer lifetimes than the original?

A: Newer capacitor designs incorporate improved dielectric materials and manufacturing processes. The Rubycon YXM series offers 10000 hours at 105°C compared to the original 5000 hours, extending component reliability without changing electrical performance.

Q: Are all substitute parts ROHS3 compliant?

A: The original UPB1A331MPD1TD is REACH Unaffected. All listed substitutes are ROHS3 Compliant and REACH Unaffected, meeting current environmental regulations.

Q: What is the difference between the Würth Elektronik WCAP-AT1H, WCAP-ATUL, and WCAP-ATLL series?

A: These represent different product lines within Würth Elektronik's aluminum electrolytic capacitor portfolio. WCAP-AT1H (860240274006) is the standard 10 V line. WCAP-ATUL (860040374005) is the 16 V upgrade line. WCAP-ATLL (860160274017) extends the operating temperature range to -55°C. All maintain identical physical dimensions and lead spacing.

Q: Can I substitute the UPB1A331MPD1TD with a higher capacitance value?

A: No. Capacitance value is a critical electrical parameter. Only 330 µF parts are acceptable substitutes. Different capacitance values will alter circuit behavior and are not compatible.

Q: What packaging options are available for these substitutes?

A: The original part uses standard radial, can package. Substitute parts are available in Cut Tape (CT) and Tape & Box (TB) packaging formats. Packaging does not affect electrical or mechanical compatibility; it only affects procurement and handling methods.

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