UPJ1K331MHD6TN Equivalent & Substitute Parts

Part Overview

The UPJ1K331MHD6TN is a 330 µF, 80 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 5000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part carries a "Not For New Designs" product status, indicating that Nichicon has superseded this model in their current product portfolio. Identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where original components may no longer be readily available or where design improvements warrant component upgrades.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	80 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Height (Seated Max)	1.043" (26.50 mm)

Substitute Part Grouping Explanation

Substitution of the UPJ1K331MHD6TN is determined by the following critical parameters:

Capacitance Value: Must remain 330 µF to maintain circuit functionality
Voltage Rating: Substitute must equal or exceed 80 V; higher voltage ratings provide additional design margin
Tolerance: ±20% tolerance is acceptable for general-purpose applications
Package Configuration: Radial, can-style through-hole mounting with identical lead spacing (0.295" / 7.50 mm) ensures mechanical compatibility
Physical Dimensions: Case diameter (0.630" / 16.00 mm) and height must fit within existing PCB layouts; minor height variations are permissible if they do not exceed board clearance constraints
Polarization: Polar configuration must be maintained for correct circuit operation
Operating Temperature Range: Must support -55°C to 105°C minimum

The UPW2A331MHD1TN qualifies as a direct substitute based on these parameters. It maintains identical capacitance, tolerance, polarization, package style, and lead spacing while providing an upgraded voltage rating (100 V vs. 80 V) and extended lifetime (8000 Hrs vs. 5000 Hrs @ 105°C).

Parameter Comparison

Parameter	UPJ1K331MHD6TN (Main Part)	UPW2A331MHD1TN (Substitute)
Manufacturer	Nichicon	Nichicon
Capacitance	330 µF	330 µF
Tolerance	±20%	±20%
Voltage - Rated	80 V	100 V
Lifetime @ Temp.	5000 Hrs @ 105°C	8000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)	0.630" (16.00 mm)
Height - Seated (Max)	1.043" (26.50 mm)	1.063" (27.00 mm)
Package / Case	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Not For New Designs	Not For New Designs

Engineering Selection Recommendations

The UPW2A331MHD1TN is a qualified substitute for the UPJ1K331MHD6TN in applications where the original part is unavailable or where component refresh is warranted. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The substitute offers two measurable improvements: a 20 V higher voltage rating (100 V vs. 80 V) and a 3000-hour extended lifetime at 105°C (8000 Hrs vs. 5000 Hrs). These enhancements provide increased design margin and improved reliability without altering circuit performance or requiring PCB modifications.

The height difference of 0.020" (0.50 mm) between the two parts is negligible for through-hole applications and will not impact PCB layout or component clearance in standard designs. Verification of board clearance is recommended only if the application involves space-constrained environments or custom enclosures with tight vertical tolerances.

Frequently Asked Questions (FAQ)

Q: Can the UPW2A331MHD1TN be used as a direct replacement for the UPJ1K331MHD6TN?

A: Yes. Both parts share identical capacitance (330 µF), tolerance (±20%), polarization (polar), lead spacing (0.295" / 7.50 mm), case diameter (0.630" / 16.00 mm), and mounting configuration (through-hole radial). The substitute is electrically and mechanically compatible without requiring circuit modifications or PCB redesign.

Q: What are the key differences between these two parts?

A: The UPW2A331MHD1TN provides a higher voltage rating (100 V vs. 80 V) and extended lifetime (8000 Hrs vs. 5000 Hrs @ 105°C). The seated height increases by 0.020" (0.50 mm), which is negligible for standard applications.

Q: Will the height difference affect PCB layout?

A: The 0.020" (0.50 mm) height increase is minimal and will not impact standard PCB designs. Verification is necessary only in applications with restricted vertical clearance or custom enclosure constraints.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the UPJ1K331MHD6TN and UPW2A331MHD1TN are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why is the original part marked "Not For New Designs"?

A: The "Not For New Designs" status indicates that Nichicon has superseded this model in their current product portfolio. For new designs, the UPW2A331MHD1TN or other current-generation alternatives are recommended. For legacy system support and repair, the original part remains available.

Q: Can I use a higher voltage-rated capacitor in place of the original?

A: Yes. Using a higher voltage-rated capacitor (100 V vs. 80 V) provides additional design margin and does not degrade circuit performance. The circuit will operate normally with the increased voltage rating.

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