Equivalent & Substitute Parts for PLG1C331MCO1

Part Overview

The PLG1C331MCO1 is a 330 µF, 16 V aluminum polymer capacitor manufactured by Nichicon in the PLG series. This through-hole radial can capacitor is designed for general-purpose applications requiring stable capacitance and low equivalent series resistance. The part is currently active in production and ROHS3 compliant. Equivalent and substitute parts may be required due to inventory availability, lead time constraints, or specific performance requirements in ripple current handling and ESR characteristics.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Type	Aluminum Polymer
ESR (Equivalent Series Resistance)	13 mOhm
Lifetime @ Temperature	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Ripple Current @ 100 kHz	4.7 A
Mounting Type	Through Hole
Package	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PLG1C331MCO1 is determined by the following critical parameters:

Capacitance Value: Must be 330 µF (no tolerance variation acceptable for direct substitution)
Voltage Rating: Must be 16 V or higher
Tolerance: Must be ±20% or tighter
Type: Must be Aluminum Polymer
Operating Temperature Range: Must support -55°C to 105°C minimum
Lifetime Rating: Must meet or exceed 2000 Hrs @ 105°C
Mounting Type: Must be Through Hole
Package Style: Must be Radial, Can
Compliance: Must be ROHS3 compliant

The following parts meet these substitution criteria:

PLF1C331MDO1 (Nichicon PLF series): Lower ESR (9 mOhm vs. 13 mOhm), higher ripple current capability (6.1 A @ 100 kHz), larger physical dimensions
RR71C331MDN1 (Nichicon RR7 series): Lowest ESR (7 mOhm), highest ripple current capability (6.1 A @ 100 kHz), largest physical dimensions, includes low-frequency ripple current rating

Parameter Comparison

Parameter	PLG1C331MCO1	PLF1C331MDO1	RR71C331MDN1
Manufacturer	Nichicon	Nichicon	Nichicon
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	16 V	16 V	16 V
Tolerance	±20%	±20%	±20%
Type	Polymer	Polymer	Polymer
ESR	13 mOhm	9 mOhm	7 mOhm
Lifetime @ 105°C	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 100 kHz	4.7 A	6.1 A	6.1 A
Lead Spacing	0.138" (4.60 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Diameter	0.315" (8.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Max)	0.354" (9.00 mm)	0.512" (13.00 mm)	0.551" (14.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three parts—PLG1C331MCO1, PLF1C331MDO1, and RR71C331MDN1—are active production components manufactured by Nichicon and maintain ROHS3 compliance and REACH unaffected status. Selection between these parts depends on application-specific requirements:

PLG1C331MCO1 is suitable for applications with standard ripple current demands (4.7 A @ 100 kHz) and space constraints requiring the smallest footprint (8.00 mm diameter, 9.00 mm height).

PLF1C331MDO1 provides improved ESR performance (9 mOhm) and higher ripple current capability (6.1 A @ 100 kHz) while maintaining the same electrical specifications. Physical dimensions are larger (10.00 mm diameter, 13.00 mm height), requiring PCB layout accommodation.

RR71C331MDN1 offers the lowest ESR (7 mOhm) and highest ripple current performance (6.1 A @ 100 kHz), with additional low-frequency ripple current specification (610 mA @ 120 Hz). This part requires the largest PCB footprint (10.00 mm diameter, 14.00 mm height) and is suitable for applications demanding superior thermal and ripple current performance.

Frequently Asked Questions (FAQ)

Q: Can PLF1C331MDO1 or RR71C331MDN1 be used as direct replacements for PLG1C331MCO1?

A: Yes, both parts are direct electrical substitutes. All three share identical capacitance (330 µF), voltage rating (16 V), tolerance (±20%), operating temperature range (-55°C to 105°C), and lifetime rating (2000 Hrs @ 105°C). However, physical dimensions differ, requiring PCB layout verification before substitution.

Q: What are the key differences between these three parts?

A: The primary differences are ESR and ripple current capability. PLG1C331MCO1 has 13 mOhm ESR and 4.7 A ripple current. PLF1C331MDO1 reduces ESR to 9 mOhm with 6.1 A ripple current. RR71C331MDN1 achieves the lowest ESR at 7 mOhm with 6.1 A ripple current and includes low-frequency ripple current specification. Physical size increases from PLG to PLF to RR71.

Q: Are there PCB layout considerations when substituting these parts?

A: Yes. PLG1C331MCO1 has a lead spacing of 0.138" (4.60 mm) and 8.00 mm diameter. PLF1C331MDO1 and RR71C331MDN1 both have 0.197" (5.00 mm) lead spacing and 10.00 mm diameter. Substituting PLG with PLF or RR71 requires PCB pad repositioning. Height differences (9.00 mm, 13.00 mm, and 14.00 mm respectively) must also be verified for clearance in the application.

Q: Do all three parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting the same regulatory requirements.

Q: Which part should be selected for high ripple current applications?

A: PLF1C331MDO1 and RR71C331MDN1 both support 6.1 A ripple current at 100 kHz, compared to 4.7 A for PLG1C331MCO1. RR71C331MDN1 additionally provides low-frequency ripple current specification (610 mA @ 120 Hz), making it suitable for applications with mixed-frequency ripple current demands.

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