UTM1C331MHD Equivalent & Substitute Parts

Part Overview

The Nichicon UTM1C331MHD is a 330 µF, 16 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 2000 hours at 85°C. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The UTM series represents general-purpose capacitor technology suitable for through-hole mounting in standard PCB layouts with 7.50 mm lead spacing.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 85°C
Lifetime Rating	2000 Hrs @ 85°C

Substitute Part Grouping Explanation

Substitution of the UTM1C331MHD is determined by the following critical parameters:

Primary Matching Criteria:

Capacitance value: 330 µF (exact match required)
Tolerance: ±20% (standard for aluminum electrolytic capacitors)
Voltage rating: 16 V minimum (equal or higher voltage ratings are acceptable)
Package type: Radial, can configuration
Lead spacing: 0.295" (7.50 mm)
Case diameter: 0.630" (16.00 mm)
Mounting type: Through hole
Polarization: Polar

Substitution Categories:

Direct Equivalent (Same Voltage Rating): Parts with 16 V rating and identical physical dimensions maintain full pin-for-pin compatibility.

Upgrade Substitutes (Higher Voltage Rating): Parts rated at 35 V, 50 V, 63 V, or 100 V provide enhanced voltage margin while maintaining identical physical footprint and lead spacing. These are electrically compatible in 16 V applications.

Performance Variants: Differences in lifetime rating, operating temperature range, ripple current handling, and ESR characteristics allow selection based on specific application requirements while maintaining mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Case Diameter	Height (Max)	Lifetime @ Temp	Operating Temp Range	Product Status
UTM1C331MHD	Nichicon	330 µF	16 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.024" (26.00 mm)	2000 Hrs @ 85°C	-40°C to 85°C	Obsolete
UBX1V331MHL	Nichicon	330 µF	35 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.043" (26.50 mm)	2000 Hrs @ 150°C	-55°C to 150°C	Active
16YXG330MEFC8X11.5	Rubycon	330 µF	16 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	0.512" (13.00 mm)	4000 Hrs @ 105°C	-40°C to 105°C	Not For New Designs
678D337M050EK4J	Vishay Sprague	330 µF	50 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.032" (26.20 mm)	4000 Hrs @ 105°C	-55°C to 105°C	Active
337CKH100M	Cornell Dubilier / Illinois Capacitor	330 µF	100 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.043" (26.50 mm)	2000 Hrs @ 105°C	-40°C to 105°C	Active
678D337M063EK4D	Vishay Sprague	330 µF	63 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.032" (26.20 mm)	4000 Hrs @ 105°C	-55°C to 105°C	Active
678D337M063EK4O	Vishay Sprague	330 µF	63 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.032" (26.20 mm)	4000 Hrs @ 105°C	-55°C to 105°C	Active
EGXF101ELL331ML25S	Chemi-Con	330 µF	100 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.043" (26.50 mm)	3000 Hrs @ 125°C	-40°C to 125°C	Active
EKY-101ELL331ML25S	Chemi-Con	330 µF	100 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.043" (26.50 mm)	10000 Hrs @ 105°C	-40°C to 105°C	Active
EKYA101ELL331ML25S	Chemi-Con	330 µF	100 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.043" (26.50 mm)	10000 Hrs @ 105°C	-40°C to 105°C	Active
EKYB101ELL331ML25S	Chemi-Con	330 µF	100 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	1.043" (26.50 mm)	10000 Hrs @ 105°C	-40°C to 105°C	Active

Engineering Selection Recommendations

For Direct Replacement (Same Voltage, Same Footprint):

The Rubycon 16YXG330MEFC8X11.5 provides a direct 16 V equivalent with identical lead spacing and case diameter. However, this part is classified as "Not For New Designs," limiting its suitability for new production. The reduced height (0.512" vs. 1.024") may present clearance advantages in space-constrained layouts but requires PCB verification.

For Active Production (Recommended Primary Substitutes):

The Nichicon UBX1V331MHL is an active-status upgrade substitute from the same manufacturer as the original part. It maintains identical physical dimensions and lead spacing while providing 35 V rating and extended operating temperature range (-55°C to 150°C). This part is suitable for automotive applications and offers enhanced thermal performance.

The Vishay Sprague 678D337M050EK4J and 678D337M063EK4O/4D series provide 50 V and 63 V ratings respectively, with active product status and 4000-hour lifetime ratings at 105°C. These parts maintain full mechanical compatibility and are suitable for general-purpose applications.

For Extended Lifetime Requirements:

The Chemi-Con EKY-101ELL331ML25S, EKYA101ELL331ML25S, and EKYB101ELL331ML25S series offer 100 V ratings with 10,000-hour lifetime at 105°C, providing significantly extended service life. The EKYB variant offers the highest ripple current handling (1.125 A @ 120 Hz) and lowest impedance (28 mOhms) among the 100 V options.

The Chemi-Con EGXF101ELL331ML25S provides 100 V rating with AEC-Q200 automotive qualification and 3000-hour lifetime at 125°C, suitable for automotive applications requiring higher temperature operation.

Compliance Considerations:

All active-status substitute parts maintain RoHS3 compliance or equivalent environmental standards. The Vishay Sprague 678D series parts are RoHS non-compliant and should be evaluated against specific regulatory requirements. All parts carry REACH Unaffected or REACH Compliant status where specified.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V or 50 V rated capacitor in place of the 16 V UTM1C331MHD?

A: Yes. Higher voltage-rated capacitors are electrically compatible in lower-voltage applications. The UBX1V331MHL (35 V), 678D337M050EK4J (50 V), and 678D337M063EK4O (63 V) all maintain identical lead spacing (7.50 mm), case diameter (16.00 mm), and capacitance (330 µF), making them direct mechanical and electrical substitutes. The higher voltage rating provides additional safety margin without affecting circuit operation.

Q: What is the difference between the Chemi-Con 100 V variants (EKY-101ELL331ML25S, EKYA101ELL331ML25S, EKYB101ELL331ML25S)?

A: All three parts share identical electrical specifications: 330 µF, 100 V, ±20% tolerance, and 10,000-hour lifetime at 105°C. The primary difference is ripple current handling and impedance. The EKYB101ELL331ML25S offers the highest ripple current capacity (1.125 A @ 120 Hz) and lowest impedance (28 mOhms), making it suitable for applications with higher AC ripple current demands. The EKY-101ELL331ML25S and EKYA101ELL331ML25S provide 850 mA @ 120 Hz ripple current with 38 mOhms impedance.

Q: Is the Rubycon 16YXG330MEFC8X11.5 a suitable replacement?

A: The Rubycon 16YXG330MEFC8X11.5 provides an exact voltage match (16 V) and identical lead spacing and case diameter. However, it is classified as "Not For New Designs," indicating manufacturer discontinuation or transition. For new production, active-status alternatives such as the Nichicon UBX1V331MHL or Vishay Sprague 678D series are preferred. The Rubycon part may be acceptable for maintenance or repair of existing equipment where inventory exists.

Q: What is the significance of the different lifetime ratings (2000 Hrs, 3000 Hrs, 4000 Hrs, 10000 Hrs)?

A: Lifetime ratings indicate the expected operational duration at the specified temperature before capacitance degradation reaches 80% of the initial value. The original UTM1C331MHD is rated for 2000 hours at 85°C. Substitute parts with higher lifetime ratings (4000 or 10000 hours) provide extended service life and are suitable for applications requiring higher reliability or longer operational periods. Selection depends on the specific application's expected service duration and thermal environment.

Q: Are all substitute parts compatible with the original PCB layout?

A: Yes. All substitute parts maintain the critical mechanical parameters: 0.295" (7.50 mm) lead spacing, 0.630" (16.00 mm) case diameter, and radial, can package configuration. Height variations exist (ranging from 0.512" to 1.043"), but these do not affect PCB hole compatibility. Verify clearance above the PCB for parts with maximum heights of 1.043" to ensure no interference with adjacent components or enclosure constraints.

Q: Which substitute offers the best performance for automotive applications?

A: The Nichicon UBX1V331MHL is specifically rated for automotive applications with extended operating temperature range (-55°C to 150°C) and 2000-hour lifetime at 150°C. The Chemi-Con EGXF101ELL331ML25S provides AEC-Q200 automotive qualification with 100 V rating and 3000-hour lifetime at 125°C. Both parts maintain identical physical compatibility with the original UTM1C331MHD.

Q: What does "RoHS Compliant" or "RoHS non-compliant" mean for capacitor selection?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the part meets environmental regulations restricting lead, cadmium, mercury, and other hazardous materials. RoHS3 Compliant parts are suitable for applications subject to EU environmental directives and similar regulations. The Vishay Sprague 678D series parts are RoHS non-compliant and should be evaluated against specific regulatory requirements for your application or market.

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