PCS0J391MCL1GS Equivalent & Substitute Parts

Part Overview

The PCS0J391MCL1GS is a 390 µF, 6.3 V aluminum polymer capacitor manufactured by Nichicon in the PCS series. This surface mount radial can capacitor is designed for general purpose applications requiring low ESR performance and extended operational life. The part is Active status and RoHS3 compliant, making it suitable for modern electronic assemblies. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	390 µF
Voltage Rating	6.3 V
Tolerance	±20%
Type	Aluminum Polymer
ESR (Equivalent Series Resistance)	22 mOhm
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Ripple Current @ 100 kHz	3.2 A
Package Type	Radial, Can - SMD
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.276" (7.00 mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30 mm x 8.30 mm)
Mounting Type	Surface Mount
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PCS0J391MCL1GS is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 390 µF (exact match required)
Voltage Rating: 6.3 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - SMD (exact match required)
Physical Dimensions: 0.315" Dia (8.00 mm), Height 0.276" (7.00 mm) maximum
Surface Mount Land Size: 0.327" L x 0.327" W (8.30 mm x 8.30 mm)
Mounting Type: Surface Mount (exact match required)
Operating Temperature Range: -55°C to 105°C (exact match required)

Allowable Variation Parameters:

ESR (Equivalent Series Resistance): May vary; lower ESR values are acceptable
Lifetime @ Temperature: May vary; equal or greater lifetime is acceptable
Ripple Current @ 100 kHz: May vary; equal or greater ripple current capability is acceptable
Manufacturer: Different manufacturers acceptable if all mandatory parameters match
Series designation: May differ between manufacturers

Substitute parts are grouped into two categories: direct equivalents from the same manufacturer (Nichicon series variants) and parametric equivalents from alternative manufacturers (Chemi-Con, KEMET) that meet or exceed performance specifications while maintaining identical electrical and mechanical compatibility.

Parameter Comparison

Parameter	PCS0J391MCL1GS (Main)	PCJ0J391MCL1GS	PCK0J391MCO1GS	APXE6R3ARA391MH70G	A766KE397M0JLAE022
Manufacturer	Nichicon	Nichicon	Nichicon	Chemi-Con	KEMET
Series	PCS	PCJ	PCK	NPCAP™-PXE	A766
Capacitance	390 µF	390 µF	390 µF	390 µF	390 µF
Voltage Rating	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Type	Aluminum Polymer	Aluminum Polymer	Aluminum Polymer	Aluminum Polymer	Aluminum Polymer
ESR @ 100 kHz	22 mOhm	14 mOhm	9 mOhm	14 mOhm	22 mOhm
Lifetime @ 105°C	5000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	5000 Hrs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 100 kHz	3.2 A	3.95 A	4.5 A	3.95 A	3.22 A
Size / Dimension	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.276" (7.00 mm)	0.276" (7.00 mm)	0.276" (7.00 mm)	0.264" (6.70 mm)	0.276" (7.00 mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30 mm x 8.30 mm)	0.327" L x 0.327" W (8.30 mm x 8.30 mm)	0.327" L x 0.327" W (8.30 mm x 8.30 mm)	0.327" L x 0.327" W (8.30 mm x 8.30 mm)	0.327" L x 0.327" W (8.30 mm x 8.30 mm)
Package Type	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and RoHS3 compliance, ensuring regulatory alignment with modern manufacturing standards. Selection between substitute options depends on specific application requirements:

PCJ0J391MCL1GS and APXE6R3ARA391MH70G offer reduced ESR (14 mOhm) compared to the main part, providing improved ripple current handling at 3.95 A @ 100 kHz. However, both parts specify 2000 Hrs lifetime @ 105°C, which is lower than the main part's 5000 Hrs rating.

PCK0J391MCO1GS provides the lowest ESR at 9 mOhm with the highest ripple current capability at 4.5 A @ 100 kHz, making it suitable for applications requiring superior high-frequency performance. Lifetime is specified at 2000 Hrs @ 105°C.

A766KE397M0JLAE022 from KEMET matches the main part's ESR (22 mOhm) and lifetime (5000 Hrs @ 105°C), providing direct performance equivalence. The KEMET part is REACH Unaffected, whereas the main part is REACH Affected.

APXE6R3ARA391MH70G from Chemi-Con features a reduced seated height of 0.264" (6.70 mm) compared to 0.276" (7.00 mm) for other parts, offering potential PCB layout advantages in space-constrained designs. This part is REACH Unaffected.

All substitute parts maintain identical capacitance, voltage rating, tolerance, operating temperature range, package type, and surface mount land size specifications, ensuring direct mechanical and electrical compatibility with the PCS0J391MCL1GS.