Nichicon UKL1J331MHD 330µF 63V Radial Aluminum Electrolytic Capacitor Equivalent & Substitute Parts

Part Overview

The Nichicon UKL1J331MHD is a 330µF, 63V radial aluminum electrolytic capacitor rated for 2000 hours at 85°C. This part carries a "Not For New Designs" status, indicating it has been superseded in Nichicon's product portfolio. Equivalent and substitute parts are necessary for ongoing production support, legacy system maintenance, and applications requiring enhanced thermal performance or compliance certifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	63 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Electrical Equivalents (same capacitance, voltage, tolerance, and lead spacing):

Capacitance: 330 µF (exact match required)
Voltage Rating: 63 V (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 0.197" (5.00mm) (exact match required)
Package: Radial, Can (exact match required)
Mounting: Through Hole (exact match required)

Acceptable Variations for Direct Substitution:

Lifetime @ Temperature: Equal to or greater than 2000 Hrs @ 85°C
Operating Temperature Range: Equal to or wider than -40°C ~ 85°C
Ripple Current: Equal to or greater than specified values
Physical Dimensions: Height variation acceptable if PCB clearance permits

Upgrade Parts (higher voltage rating or enhanced thermal performance):

Voltage Rating: 100 V (backward compatible; higher voltage rating)
Lifetime @ Temperature: 5000 Hrs @ 105°C or 5000 Hrs @ 125°C (enhanced reliability)
Operating Temperature Range: Extended upper limit (improved thermal margin)

Similar Parts (different physical dimensions but identical electrical specifications):

Capacitance: 330 µF (exact match)
Voltage: 63 V (exact match)
Tolerance: ±20% (exact match)
Lead Spacing: 0.197" (5.00mm) (exact match)
Physical Size: Smaller diameter or height (space-constrained applications)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Size (Dia × Height)	Product Status	Inventory
UKL1J331MHD	Nichicon	UKL	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.492" × 1.043" (12.50 × 26.50mm)	Not For New Designs	788 Pcs
URS1J331MHD	Nichicon	URS	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.492" × 0.650" (12.50 × 16.50mm)	Active	774 Pcs
UPJ1J331MHD	Nichicon	UPJ	330 µF	63 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00mm)	0.492" × 1.043" (12.50 × 26.50mm)	Not For New Designs	5060 Pcs
UPM1J331MHD	Nichicon	UPM	330 µF	63 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00mm)	0.492" × 1.063" (12.50 × 27.00mm)	Not For New Designs	1599 Pcs
UBT1J331MHD8	Nichicon	UBT	330 µF	63 V	±20%	5000 Hrs @ 125°C	-40°C ~ 125°C	0.197" (5.00mm)	0.492" × 1.063" (12.50 × 27.00mm)	Active	1266 Pcs
UBW1J331MHD	Nichicon	UBW	330 µF	63 V	±20%	3000 Hrs @ 135°C	-55°C ~ 135°C	0.197" (5.00mm)	0.492" × 1.063" (12.50 × 27.00mm)	Active	883 Pcs
UVK2A331MHD	Nichicon	UVK	330 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.492" × 1.063" (12.50 × 27.00mm)	Not For New Designs	969 Pcs
UVR2A331MHD	Nichicon	UVR	330 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.492" × 0.984" (12.50 × 25.00mm)	Not For New Designs	1341 Pcs
UVR1J331MPD	Nichicon	UVR	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.394" × 0.866" (10.00 × 22.00mm)	Not For New Designs	13392 Pcs
100PK330MEFC12.5X25	Rubycon	PK	330 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.492" × 1.063" (12.50 × 27.00mm)	Active	2135 Pcs
100PX330MEFC12.5X25	Rubycon	PX	330 µF	100 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00mm)	0.492" × 1.043" (12.50 × 26.50mm)	Active	4200 Pcs

Engineering Selection Recommendations

Direct Substitution (Same Electrical & Mechanical Specifications):

URS1J331MHD is the primary direct substitute for UKL1J331MHD. Both parts share identical electrical specifications (330µF, 63V, ±20%, 2000 Hrs @ 85°C) and lead spacing (5.00mm). URS1J331MHD carries Active product status, making it suitable for new designs and ongoing production. The only difference is physical height: URS1J331MHD measures 0.650" (16.50mm) versus UKL1J331MHD at 1.043" (26.50mm), providing a space-saving advantage for height-constrained PCB layouts.

Enhanced Reliability Substitutes (Extended Lifetime & Temperature Range):

UPJ1J331MHD and UPM1J331MHD offer improved thermal performance with 5000 Hrs @ 105°C lifetime ratings and extended operating temperature range (-55°C ~ 105°C). These parts maintain identical electrical specifications and lead spacing. UPM1J331MHD includes AEC-Q200 automotive qualification, suitable for automotive-grade applications. Both parts are physically compatible with the original UKL1J331MHD footprint.

High-Temperature Automotive Substitutes:

UBT1J331MHD8 and UBW1J331MHD are designed for high-temperature environments. UBT1J331MHD8 provides 5000 Hrs @ 125°C with Active product status. UBW1J331MHD extends performance to 3000 Hrs @ 135°C with operating range -55°C ~ 135°C. Both are Active products suitable for automotive applications requiring enhanced thermal margins. Physical dimensions are compatible with standard PCB layouts.

Higher Voltage Upgrade Options:

UVK2A331MHD and UVR2A331MHD provide 100V rating while maintaining 330µF capacitance and ±20% tolerance. These are backward-compatible upgrades offering increased voltage margin for circuits operating near the 63V limit. UVK2A331MHD matches the original height (1.063"), while UVR2A331MHD is slightly shorter (0.984"). Both support general-purpose applications.

Cross-Manufacturer Alternative (Rubycon):

100PX330MEFC12.5X25 (Rubycon PX series) provides 330µF at 100V with 2000 Hrs @ 105°C lifetime and extended temperature range (-55°C ~ 105°C). This part is Active and offers superior thermal performance compared to the original UKL1J331MHD. Physical dimensions match the original footprint exactly (12.50 × 26.50mm). 100PK330MEFC12.5X25 (Rubycon PK series) is an alternative at 100V with standard 2000 Hrs @ 85°C rating and Active status.

Space-Constrained Applications:

UVR1J331MPD offers identical electrical specifications (330µF, 63V, ±20%, 2000 Hrs @ 85°C) in a compact 10.00 × 22.00mm package. This part is suitable only when PCB space is severely limited and the smaller footprint is acceptable. Lead spacing remains standard at 5.00mm.

Frequently Asked Questions (FAQ)

Q: Can I use URS1J331MHD as a direct replacement for UKL1J331MHD?

A: Yes. Both parts have identical electrical specifications (330µF, 63V, ±20%, 2000 Hrs @ 85°C) and standard lead spacing (5.00mm). The primary difference is physical height: URS1J331MHD is shorter (16.50mm vs. 26.50mm), which may be advantageous for space-constrained designs. URS1J331MHD carries Active product status, making it the recommended choice for new production.

Q: What is the difference between UPJ1J331MHD and UPM1J331MHD?

A: Both parts share identical electrical specifications and lifetime ratings (5000 Hrs @ 105°C). The key difference is that UPM1J331MHD includes AEC-Q200 automotive qualification and has lower impedance (49 mOhms vs. 72 mOhms). UPM1J331MHD is specified for automotive applications, while UPJ1J331MHD is for general-purpose use. Physical dimensions differ slightly: UPM1J331MHD height is 27.00mm versus UPJ1J331MHD at 26.50mm.

Q: Should I use UBT1J331MHD8 or UBW1J331MHD for high-temperature applications?

A: Selection depends on maximum operating temperature requirements. UBT1J331MHD8 provides 5000 Hrs @ 125°C with operating range -40°C ~ 125°C. UBW1J331MHD extends to 3000 Hrs @ 135°C with operating range -55°C ~ 135°C. Both are Active products. Choose UBW1J331MHD if your application requires operation above 125°C or extended low-temperature performance (-55°C).

Q: Can I substitute a 100V-rated capacitor for the original 63V part?

A: Yes, as an upgrade. Higher voltage ratings provide increased safety margin and are backward-compatible in circuits designed for lower voltages. UVK2A331MHD and UVR2A331MHD (100V) can replace UKL1J331MHD (63V) without functional issues. The 100V parts occupy slightly more physical space in some cases, so verify PCB clearance.

Q: What is the advantage of using 100PX330MEFC12.5X25 (Rubycon) over Nichicon alternatives?

A: 100PX330MEFC12.5X25 offers 2000 Hrs @ 105°C lifetime with extended operating range (-55°C ~ 105°C) and Active product status. It provides superior thermal performance compared to the original UKL1J331MHD (2000 Hrs @ 85°C) while maintaining identical physical dimensions and lead spacing. This part is suitable for applications requiring enhanced reliability without design changes.

Q: Is UVR1J331MPD suitable for my application?

A: UVR1J331MPD is electrically equivalent to UKL1J331MHD but features a compact 10.00 × 22.00mm package versus the standard 12.50 × 26.50mm. Use this part only if PCB space constraints require the smaller footprint. Verify that the reduced physical size does not compromise thermal dissipation or mechanical stability in your application.

Q: What does "Not For New Designs" product status mean?

A: Parts marked "Not For New Designs" have been superseded in the manufacturer's portfolio. They remain available for legacy system support and ongoing production of existing designs but should not be selected for new product development. Active-status alternatives like URS1J331MHD, UBT1J331MHD8, and UBW1J331MHD are recommended for new designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference are ROHS3 compliant and suitable for applications requiring RoHS compliance.

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