UKL1V331KHD1TO Equivalent & Substitute Parts

Part Overview

The Nichicon UKL1V331KHD1TO is a 330 µF, 35 V aluminum electrolytic capacitor in radial configuration with a rated lifetime of 2000 hours at 85°C. This component is classified as not for new designs, indicating it has been superseded in Nichicon's product portfolio. Equivalent and substitute parts are necessary to support legacy system maintenance, provide higher performance alternatives, or accommodate supply chain requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	35 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the UKL1V331KHD1TO are grouped based on the following substitution criteria:

Core Electrical Parameters (Must Match):

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)

Mechanical Parameters (Must Match):

Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.492" (12.50 mm)
Package Type: Radial, Can
Mounting Type: Through Hole

Allowable Upgrade Parameters:

Voltage Rating: 35 V or higher (50 V or 63 V rated substitutes are acceptable upgrades)
Operating Temperature Range: -40°C minimum to 85°C maximum or wider
Lifetime @ Temperature: Higher values indicate improved reliability
Ripple Current Capability: Higher values indicate enhanced performance

All substitute parts listed maintain identical lead spacing, case diameter, and mounting configuration, ensuring direct mechanical and electrical compatibility in PCB layouts.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Lifetime @ Temp.	Operating Temp. Range	Ripple Current @ 100 kHz	Product Status	Packaging
UKL1V331KHD1TO	Nichicon	330 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	825 mA @ 10 kHz	Not For New Designs	Cut Tape (CT)
UBT1H331MHD8TO	Nichicon	330 µF	50 V	±20%	10000 Hrs @ 125°C	-40°C ~ 125°C	1.33 A @ 100 kHz	Active	Cut Tape (CT)
ELXV500EMC331MK20S	Chemi-Con	330 µF	50 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	1.19 A @ 100 kHz	Active	Tape & Box (TB)
ELXY500ETD331MK20S	Chemi-Con	330 µF	50 V	±20%	7000 Hrs @ 105°C	-55°C ~ 105°C	1.19 A @ 100 kHz	Active	Tape & Box (TB)
ELXY500ETE331MK20S	Chemi-Con	330 µF	50 V	±20%	7000 Hrs @ 105°C	-55°C ~ 105°C	1.19 A @ 100 kHz	Active	Tape & Box (TB)
ELXZ630EC3331MK20S	Chemi-Con	330 µF	63 V	±20%	7000 Hrs @ 105°C	-55°C ~ 105°C	1.29 A @ 100 kHz	Active	Cut Tape (CT)
ELXZ630ETD331MK20S	Chemi-Con	330 µF	63 V	±20%	7000 Hrs @ 105°C	-55°C ~ 105°C	1.29 A @ 100 kHz	Active	Tape & Box (TB)
ELXZ630ETE331MK20S	Chemi-Con	330 µF	63 V	±20%	7000 Hrs @ 105°C	-55°C ~ 105°C	1.29 A @ 100 kHz	Active	Tape & Box (TB)

Engineering Selection Recommendations

Nichicon UBT1H331MHD8TO (50 V Upgrade) This part maintains Nichicon series continuity while providing a 50 V voltage rating upgrade from the original 35 V specification. The UBT1H331MHD8TO is classified as Active and offers significantly extended lifetime (10000 hours at 125°C versus 2000 hours at 85°C). It supports a wider operating temperature range (-40°C to 125°C) and delivers higher ripple current capability (1.33 A at 100 kHz). This option is suitable for applications requiring enhanced reliability and thermal performance within the Nichicon product family.

Chemi-Con ELXV500EMC331MK20S (50 V, AEC-Q200) This part provides a 50 V voltage rating upgrade with AEC-Q200 automotive qualification. It supports an extended operating temperature range (-55°C to 105°C) and offers 5000 hours lifetime at 105°C. The ELXV500EMC331MK20S is packaged in Tape & Box format and is classified as Active. This option is appropriate for automotive and industrial applications requiring recognized quality standards.

Chemi-Con ELXY500ETD331MK20S and ELXY500ETE331MK20S (50 V, AEC-Q200) Both ELXY series parts provide 50 V voltage rating with AEC-Q200 automotive qualification and 7000 hours lifetime at 105°C. They support the extended temperature range (-55°C to 105°C) and are classified as Active. These options offer improved lifetime performance compared to the ELXV500EMC331MK20S while maintaining the same voltage rating. Packaging differs between Cut Tape (ETD) and Tape & Box (ETE) variants.

Chemi-Con ELXZ630 Series (63 V, AEC-Q200) The ELXZ630EC3331MK20S, ELXZ630ETD331MK20S, and ELXZ630ETE331MK20S provide the highest voltage rating upgrade at 63 V with AEC-Q200 automotive qualification. All three variants deliver 7000 hours lifetime at 105°C and support the extended temperature range (-55°C to 105°C). These options are suitable for applications requiring maximum voltage margin and automotive-grade reliability. Packaging options include Cut Tape (EC3 and ETD) and Tape & Box (ETE) formats.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V or 63 V rated capacitor in place of the 35 V UKL1V331KHD1TO?

A: Yes. Higher voltage-rated capacitors are direct substitutes for lower voltage-rated capacitors when all other electrical and mechanical parameters match. A 50 V or 63 V rated capacitor will function correctly in a circuit designed for 35 V operation. The higher voltage rating provides additional safety margin and does not negatively affect circuit performance.

Q: Are all substitute parts mechanically compatible with the original UKL1V331KHD1TO?

A: Yes. All listed substitute parts share identical lead spacing (0.197" / 5.00 mm), case diameter (0.492" / 12.50 mm), and mounting type (Through Hole, Radial Can). They are direct mechanical replacements on PCBs designed for the UKL1V331KHD1TO footprint.

Q: What is the difference between Cut Tape (CT) and Tape & Box (TB) packaging?

A: Cut Tape packaging supplies individual components cut from a continuous tape reel, suitable for small quantity orders and manual assembly. Tape & Box packaging provides components on continuous tape within a box, optimized for automated pick-and-place assembly equipment. Both packaging formats contain identical components; the difference is in delivery and handling format only.

Q: Why do the substitute parts have higher lifetime ratings (5000-10000 hours) compared to the original 2000 hours?

A: Lifetime ratings reflect the number of hours a capacitor maintains its electrical specifications under specified temperature conditions. Higher lifetime ratings indicate improved internal design and materials. The original UKL1V331KHD1TO with 2000 hours at 85°C is an older design. Modern substitutes with 5000-10000 hours at 105°C or higher represent advances in capacitor technology and provide greater reliability margin for long-term applications.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive industry qualification standard for passive components. Parts bearing this certification have undergone rigorous testing for reliability, temperature cycling, and performance stability. AEC-Q200 qualified parts are suitable for automotive and high-reliability industrial applications. The original UKL1V331KHD1TO does not carry this certification; substitute parts with AEC-Q200 provide enhanced assurance for demanding applications.

Q: Can I mix different substitute part numbers in the same circuit board?

A: Yes. All substitute parts listed are electrically and mechanically compatible with each other and with the original UKL1V331KHD1TO. They share identical capacitance (330 µF), tolerance (±20%), lead spacing, and case diameter. Mixing different part numbers in the same assembly is acceptable from an engineering standpoint, though single-part standardization is preferred for inventory and traceability management.

Q: Which substitute should I choose for a new design?

A: The original UKL1V331KHD1TO is classified as Not For New Designs. For new designs, select from Active-status parts: Nichicon UBT1H331MHD8TO for Nichicon series continuity, or any Chemi-Con ELXV, ELXY, or ELXZ series part for automotive-qualified options with AEC-Q200 certification. The choice depends on voltage margin requirements (50 V or 63 V), temperature range needs, and packaging preferences.

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