UPJ1A331MPD1TA Equivalent & Substitute Parts

Part Overview

The UPJ1A331MPD1TA is a 330 µF, 10 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 This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where the original specification must be maintained or upgraded within compatible electrical and mechanical parameters.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Ripple Current @ 120 Hz	350 mA
Impedance	260 mOhms
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UPJ1A331MPD1TA is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Lead Spacing: 0.138" (4.60 mm) (exact match required)
Case Diameter: 0.315" (8.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)

Allowable Upgrade Parameters:

Voltage Rating: May be equal to or greater than 10 V (higher voltage ratings provide enhanced reliability margin)
Height - Seated (Max): May be equal to or slightly greater than 0.492" (12.50 mm) within PCB layout constraints
Ripple Current: May be equal to or greater than 350 mA @ 120 Hz
Impedance: May be equal to or lower than 260 mOhms (lower impedance indicates improved performance)

Substitute parts are grouped into two categories: Upgrade Substitutes (higher voltage rating with active product status) and Parametric Equivalents (identical electrical specifications with alternative packaging).

Parameter Comparison

Parameter	UPJ1A331MPD1TA (Main)	UPA1C331MPD1TA (Upgrade)	UPA1E331MPD1TA (Upgrade)	UPJ1A331MPD1TD (Equivalent)
Manufacturer	Nichicon	Nichicon	Nichicon	Nichicon
Series	UPJ	UPA	UPA	UPJ
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	10 V	16 V	25 V	10 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 105°C	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Ripple Current @ 120 Hz	350 mA	409.5 mA	409.5 mA	350 mA
Impedance	260 mOhms	90 mOhms	90 mOhms	260 mOhms
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)	0.315" (8.00 mm)	0.315" (8.00 mm)	0.315" (8.00 mm)
Height - Seated (Max)	0.492" (12.50 mm)	0.512" (13.00 mm)	0.512" (13.00 mm)	0.492" (12.50 mm)
Product Status	Not For New Designs	Active	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): UPJ1A331MPD1TD is a parametric equivalent to UPJ1A331MPD1TA, maintaining identical electrical and mechanical specifications. Both parts are classified as Not For New Designs. Selection between these two should be based on PCB layout constraints and lead configuration requirements.

For Upgraded Performance (Higher Voltage Rating): UPA1C331MPD1TA (16 V rating) and UPA1E331MPD1TA (25 V rating) are upgrade substitutes with Active product status. These parts provide enhanced voltage margin and improved electrical performance characteristics, including lower impedance (90 mOhms versus 260 mOhms) and higher ripple current capability (409.5 mA versus 350 mA). Both upgrade options accommodate the slightly increased height of 0.512" (13.00 mm) compared to the original 0.492" (12.50 mm).

Compliance Considerations: All substitute parts maintain ROHS3 compliance. UPA1C331MPD1TA and UPA1E331MPD1TA are REACH Affected, while UPJ1A331MPD1TA and UPJ1A331MPD1TD are REACH Unaffected. Verify REACH compliance requirements for your specific application before final selection.

Frequently Asked Questions (FAQ)

Q: Can UPA1C331MPD1TA or UPA1E331MPD1TA be used as direct replacements for UPJ1A331MPD1TA? A: Yes. Both UPA series parts maintain the same capacitance (330 µF), tolerance (±20%), lead spacing (0.138" / 4.60 mm), case diameter (0.315" / 8.00 mm), and mounting type (Through Hole, Radial Can). The higher voltage ratings (16 V and 25 V respectively) are compatible with circuits designed for 10 V operation. Verify PCB layout accommodates the increased height of 0.512" (13.00 mm).

Q: What is the difference between UPJ1A331MPD1TA and UPJ1A331MPD1TD? A: These parts are parametric equivalents with identical electrical specifications and physical dimensions. The difference lies in packaging configuration (Cut Tape designation). Both are classified as Not For New Designs.

Q: Why do the UPA series substitutes have lower impedance? A: Lower impedance (90 mOhms versus 260 mOhms) is an inherent characteristic of the UPA series design and represents improved electrical performance. This does not affect compatibility but provides enhanced performance margin in the application.

Q: Are there height constraints when using UPA1C331MPD1TA or UPA1E331MPD1TA? A: The upgrade substitutes have a maximum seated height of 0.512" (13.00 mm) compared to the original 0.492" (12.50 mm), a difference of 0.020" (0.50 mm). Verify PCB layout and component clearance before substitution.

Q: Which substitute should be selected for new designs? A: UPA1C331MPD1TA and UPA1E331MPD1TA are both classified as Active products and are suitable for new designs. UPA1E331MPD1TA (25 V rating) provides the highest voltage margin. UPA1C331MPD1TA (16 V rating) offers a balance between performance upgrade and form factor compatibility.

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