PLV1D331MDL1TD Equivalent & Substitute Parts

Part Overview

The PLV1D331MDL1TD is a 330 µF, 20 V aluminum polymer capacitor manufactured by Nichicon in the PLV series. This through-hole radial can capacitor is designed for general-purpose applications with a rated lifetime of 3000 hours at 105°C. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, maintenance, and production continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	20 V
Type	Aluminum Polymer
Tolerance	±20%
ESR (Equivalent Series Resistance)	24 mOhm
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PLV1D331MDL1TD is determined by the following critical parameters:

Capacitance Value: 330 µF (exact match required)
Voltage Rating: Minimum 20 V (equal or higher voltage rating is acceptable)
Package Type: Radial, Can through-hole configuration
Lead Spacing: 0.197" (5.00 mm) for PCB compatibility
Case Diameter: 0.394" (10.00 mm) for mechanical fit
Type: Aluminum Polymer construction
Tolerance: ±20%

The RNU1E331MDN1PH meets all substitution criteria with identical capacitance, lead spacing, case diameter, and package configuration. The higher voltage rating (25 V vs. 20 V) and improved ESR characteristics make this part suitable for direct replacement in the same circuit application.

Parameter Comparison

Parameter	PLV1D331MDL1TD (Main Part)	RNU1E331MDN1PH (Substitute)
Manufacturer	Nichicon	Nichicon
Capacitance	330 µF	330 µF
Voltage Rating	20 V	25 V
Type	Aluminum Polymer	Aluminum Polymer
Tolerance	±20%	±20%
ESR @ 100 kHz	24 mOhm	14 mOhm
Lifetime @ 105°C	3000 Hrs	2000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Seated Max)	0.512" (13.00 mm)	0.551" (14.00 mm)
Mounting Type	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The RNU1E331MDN1PH is the designated equivalent for the obsolete PLV1D331MDL1TD based on the following factors:

Compliance & Availability: The RNU1E331MDN1PH maintains active product status with 8426 units in stock, compared to the obsolete PLV1D331MDL1TD. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Electrical Compatibility: The substitute part provides identical capacitance (330 µF) and tolerance (±20%) with a higher voltage rating (25 V vs. 20 V). The improved ESR of 14 mOhm compared to 24 mOhm reduces power dissipation in high-frequency ripple current applications.

Mechanical Fit: Lead spacing (5.00 mm) and case diameter (10.00 mm) are identical, ensuring direct PCB compatibility. The height difference of 0.039" (1.00 mm) is within typical PCB clearance tolerances for through-hole components.

Thermal Performance: While the substitute part has a rated lifetime of 2000 hours at 105°C compared to 3000 hours for the original, both parts operate across the same temperature range (-55°C ~ 105°C) and are suitable for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can the RNU1E331MDN1PH be used as a direct replacement for the PLV1D331MDL1TD?

A: Yes. Both parts share identical capacitance (330 µF), lead spacing (5.00 mm), case diameter (10.00 mm), and package configuration (radial, can through-hole). The substitute has a higher voltage rating and lower ESR, making it electrically compatible and functionally superior for the same application.

Q: What is the significance of the voltage rating difference (20 V vs. 25 V)?

A: A higher voltage rating does not negatively affect circuit performance when the operating voltage remains at or below the original specification. The 25 V rating of the substitute provides additional safety margin and is acceptable for circuits designed for 20 V operation.

Q: Will the height difference (0.512" vs. 0.551") affect PCB assembly?

A: The 0.039" (1.00 mm) height difference is negligible for through-hole components and falls within standard PCB clearance tolerances. No design modifications are required.

Q: Why does the substitute part have a lower lifetime rating (2000 Hrs vs. 3000 Hrs)?

A: Lifetime ratings are specific to component design and manufacturing process. The RNU1E331MDN1PH's 2000-hour rating at 105°C remains suitable for general-purpose applications. Verify application-specific thermal stress requirements if extended lifetime is critical.

Q: Are both parts compliant with current regulations?

A: Yes. Both the PLV1D331MDL1TD and RNU1E331MDN1PH are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

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