PCR1H390MCL4GS Equivalent & Substitute Parts

Part Overview

The PCR1H390MCL4GS is a 39 µF, 50 V aluminum polymer capacitor manufactured by Nichicon in the PCR series. This surface mount component is designed for automotive applications with AEC-Q200 qualification. The part is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Capacitance	39 µF
Voltage Rating	50 V
Type	Aluminum Polymer
Tolerance	±20%
ESR (Equivalent Series Resistance)	36 mOhm
Lifetime @ Temperature	4000 Hrs @ 125°C
Operating Temperature Range	-55°C ~ 125°C
Ripple Current @ 100 kHz	1.3 A
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PCR1H390MCL4GS is determined by the following critical parameters:

Capacitance value: 39 µF (exact match required)
Voltage rating: 50 V (minimum acceptable)
Package type: Radial, Can - SMD (physical and electrical compatibility)
Tolerance: ±20% (functional equivalence in circuit operation)
Mounting type: Surface Mount (PCB assembly compatibility)

The PCV1H390MCL1GS qualifies as a substitute based on matching capacitance, voltage rating, tolerance, package type, and mounting configuration. Differences in ESR, lifetime rating, and operating temperature range are secondary parameters that must be evaluated within specific application requirements.

Parameter Comparison

Parameter	PCR1H390MCL4GS (Main)	PCV1H390MCL1GS (Substitute)
Manufacturer	Nichicon	Nichicon
Capacitance	39 µF	39 µF
Voltage Rating	50 V	50 V
Type	Aluminum Polymer	Aluminum Polymer
Tolerance	±20%	±20%
ESR @ 100 kHz	36 mOhm	34 mOhm
Lifetime @ Temperature	4000 Hrs @ 125°C	3000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C
Ripple Current @ 100 kHz	1.3 A	2 A
Package Type	Radial, Can - SMD	Radial, Can - SMD
Size / Dimension	0.248" Dia (6.30mm)	0.315" Dia (8.00mm)
Height - Seated (Max)	0.315" (8.00mm)	0.472" (12.00mm)
Surface Mount Land Size	0.260" L x 0.260" W (6.60mm x 6.60mm)	0.327" L x 0.327" W (8.30mm x 8.30mm)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The PCV1H390MCL1GS is an active production substitute for the obsolete PCR1H390MCL4GS. Both components are ROHS3 compliant and manufactured by Nichicon as aluminum polymer capacitors with identical electrical specifications for capacitance, voltage rating, and tolerance.

Selection of the PCV1H390MCL1GS requires evaluation of the following differences:

Operating temperature maximum: The substitute is rated to 105°C versus 125°C for the original part. Applications requiring sustained operation above 105°C are not suitable for this substitute.
Lifetime rating: The substitute provides 3000 hours at 105°C compared to 4000 hours at 125°C for the original. Long-life automotive applications must assess this reduction against mission requirements.
Physical dimensions: The substitute is larger (0.315" diameter, 0.472" height) than the original (0.248" diameter, 0.315" height). PCB layout and thermal management must accommodate the increased footprint and land size (8.30mm x 8.30mm versus 6.60mm x 6.60mm).
Ripple current capability: The substitute provides superior ripple current handling (2 A @ 100 kHz versus 1.3 A), offering improved performance margin in high-frequency switching applications.

The original PCR1H390MCL4GS carried AEC-Q200 automotive qualification; the PCV1H390MCL1GS is designated for general purpose applications. Applications requiring automotive-grade certification must confirm compliance requirements with design authority.

Frequently Asked Questions (FAQ)

Q: Can the PCV1H390MCL1GS be used as a direct replacement for the PCR1H390MCL4GS?

A: Electrical substitution is valid for applications operating within the PCV1H390MCL1GS specifications: maximum 105°C ambient temperature and 3000-hour lifetime at that temperature. Physical substitution requires PCB layout modification to accommodate the larger footprint (8.30mm x 8.30mm land size versus 6.60mm x 6.60mm).

Q: What are the critical differences between these two parts?

A: The primary differences are operating temperature maximum (105°C versus 125°C), lifetime rating (3000 hours versus 4000 hours at rated temperature), and physical size. The substitute offers lower ESR (34 mOhm versus 36 mOhm) and higher ripple current capability (2 A versus 1.3 A).

Q: Are both parts RoHS compliant?

A: Yes, both the PCR1H390MCL4GS and PCV1H390MCL1GS are ROHS3 compliant. The original part is REACH unaffected; the substitute is REACH affected.

Q: Does the larger physical size of the substitute create compatibility issues?

A: The substitute requires a larger PCB footprint. The land size increases from 6.60mm x 6.60mm to 8.30mm x 8.30mm, and the component height increases from 8.00mm to 12.00mm. PCB layout must be verified to accommodate these dimensions and any thermal or spatial constraints.

Q: What is the impact of the lower maximum operating temperature on automotive applications?

A: The PCV1H390MCL1GS is rated for general purpose applications rather than automotive. Applications requiring AEC-Q200 qualification or sustained operation above 105°C must confirm that the substitute meets design specifications or identify alternative qualified components.

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