UKT1C331MPD1TA Equivalent & Substitute Parts

Part Overview

The UKT1C331MPD1TA is a 330 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 1000 hours at 105°C and is classified as Not For New Designs. Due to its obsolescence status and limited design support, identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support. Substitute parts are selected based on matching electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (package type, lead spacing, dimensions).

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Diameter	0.315" (8.00 mm)
Height (Max)	0.512" (13.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-55°C to 105°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitute parts for the UKT1C331MPD1TA are grouped based on the following substitution criteria:

Direct Electrical Equivalents: Parts matching all core electrical parameters—330 µF capacitance, 16 V voltage rating, ±20% tolerance, and polar radial configuration—are considered direct substitutes. These parts maintain identical electrical performance in the circuit.

Mechanical Compatibility: All substitute parts share identical package dimensions (0.315" diameter, 0.512" maximum height), lead spacing (0.138" / 4.60 mm), and through-hole mounting type, ensuring PCB-level compatibility without layout modifications.

Lifetime and Thermal Performance: Substitute parts may differ in rated lifetime at 105°C (ranging from 1000 to 3000 hours). Parts with extended lifetime ratings provide improved reliability margins for the same electrical function.

Voltage Derating: The UPA1E331MPD1TA variant operates at 25 V rating while maintaining 330 µF capacitance. This higher voltage rating provides additional safety margin in circuits designed for 16 V operation.

Product Status Consideration: Active status parts (UPA series) are preferred for new applications and ongoing support, while Not For New Designs parts are suitable for legacy system replacement only.

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Lifetime @ 105°C	Ripple Current @ 120 Hz	Ripple Current @ 10 kHz	Product Status	Inventory
UKT1C331MPD1TA	UKT	330 µF	16 V	1000 Hrs	265 mA	397.5 mA	Not For New Designs	1148 Pcs
UKA1C331MPD1TD	UKA	330 µF	16 V	2000 Hrs	265 mA	397.5 mA	Not For New Designs	1595 Pcs
UVZ1C331MPD1TD	UVZ	330 µF	16 V	1000 Hrs	265 mA	397.5 mA	Not For New Designs	2851 Pcs
UPA1C331MPD1TA	UPA	330 µF	16 V	3000 Hrs	409.5 mA	—	Active	738 Pcs
UPA1E331MPD1TA	UPA	330 µF	25 V	3000 Hrs	409.5 mA	—	Active	1044 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance): UKA1C331MPD1TD and UVZ1C331MPD1TD are direct substitutes for UKT1C331MPD1TA, maintaining 330 µF capacitance and 16 V rating. UKA1C331MPD1TD offers extended 2000-hour lifetime at 105°C compared to the original 1000-hour rating. Both parts are classified as Not For New Designs but remain suitable for legacy system maintenance.

For Upgraded Performance (Active Product Status): UPA1C331MPD1TA is the recommended upgrade path. This active-status part provides 3000-hour lifetime at 105°C, higher ripple current capability (409.5 mA @ 120 Hz), and lower impedance (90 mOhms). It maintains identical 330 µF / 16 V electrical specifications and mechanical compatibility.

For Higher Voltage Margin: UPA1E331MPD1TA operates at 25 V rating with the same 330 µF capacitance and 3000-hour lifetime. This variant is suitable for circuits where voltage derating or additional safety margin is required, while maintaining full mechanical and electrical compatibility at 16 V operation.

Compliance Considerations: All substitute parts are ROHS3 compliant. UPA series parts are REACH Affected; UKT, UKA, and UVZ series are REACH Unaffected. Select based on supply chain compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can UPA1C331MPD1TA directly replace UKT1C331MPD1TA without PCB modifications? A: Yes. Both parts share identical package dimensions (0.315" diameter, 0.512" height), lead spacing (0.138" / 4.60 mm), and through-hole mounting configuration. No PCB layout changes are required.

Q: What is the difference between UPA1C331MPD1TA and UPA1E331MPD1TA? A: Both parts are 330 µF capacitors with identical mechanical packaging and 3000-hour lifetime at 105°C. The primary difference is voltage rating: UPA1C331MPD1TA is rated 16 V, while UPA1E331MPD1TA is rated 25 V. The 25 V variant provides additional voltage margin in the same physical package.

Q: Why does UPA1C331MPD1TA show higher ripple current (409.5 mA @ 120 Hz) than the original UKT1C331MPD1TA (265 mA @ 120 Hz)? A: The UPA series demonstrates improved ripple current handling capability due to lower internal impedance (90 mOhms). This represents enhanced performance characteristics of the newer product line, not a compatibility issue.

Q: Is UKA1C331MPD1TD suitable for new designs? A: No. UKA1C331MPD1TD is classified as Not For New Designs. For new applications, UPA1C331MPD1TA (Active status) is the appropriate selection.

Q: What is the significance of the 1000-hour versus 3000-hour lifetime rating? A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation reaches specified limits. UPA series parts (3000 hours) provide extended service life compared to UKT and UVZ series (1000 hours). For legacy system replacement, either rating is acceptable; for new designs, the extended lifetime is preferred.

Q: Are all substitute parts available in the same packaging format? A: Yes. All listed substitute parts are supplied in Cut Tape (CT) packaging, matching the original UKT1C331MPD1TA format.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message