PCF1A121MCL1GS Equivalent & Substitute Parts

Part Overview

The PCF1A121MCL1GS is a 120 µF, 10 V aluminum polymer capacitor manufactured by Nichicon in the PCF series. This surface mount radial can component operates across -55°C to 105°C with an ESR of 23 mOhm and rated lifetime of 2000 hours at 105°C. The part is active and ROHS3 compliant, suitable for general purpose applications requiring stable capacitance and low equivalent series resistance in compact form factors.

Equivalent and substitute parts are identified when design requirements allow tolerance in voltage rating, ESR characteristics, physical dimensions, or manufacturer selection while maintaining core electrical performance for the application.

Key Parameters

Parameter	PCF1A121MCL1GS
Capacitance	120 µF
Voltage Rating	10 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	23 mOhm
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Ripple Current @ 100 kHz	3 A
Package Type	Radial, Can - SMD
Size / Dimension	0.315" Dia (8.00mm)
Height - Seated (Max)	0.276" (7.00mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30mm x 8.30mm)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution logic for the PCF1A121MCL1GS is based on the following allowed parameters:

Voltage Rating Upgrade: Parts rated at 16 V can substitute for 10 V applications, as higher voltage rating provides design margin without affecting capacitance or tolerance specifications.

ESR Tolerance: Substitute parts with ESR values between 23 mOhm and 30 mOhm are acceptable when ripple current handling and thermal performance remain within application limits.

Lifetime Enhancement: Parts with extended lifetime ratings (5000 Hrs or 15000 Hrs @ 105°C) provide improved reliability without changing electrical characteristics.

Physical Dimensions: Substitute parts with identical or smaller footprints (0.315" diameter or 0.248" diameter) and compatible land sizes (8.30mm x 8.30mm or 6.60mm x 6.60mm) are interchangeable on the same PCB layout.

Manufacturer Equivalence: Nichicon PCF, PCJ, PCS, and RPS series, as well as Chemi-Con NPCAP™-PXE and NPCAP™-PXA series, maintain equivalent electrical performance within specified tolerances.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	ESR (mOhm)	Lifetime @ 105°C	Size Dia	Height (Max)	Ripple Current @ 100 kHz	RoHS Status
PCF1A121MCL1GS	Nichicon	120 µF	10 V	23	2000 Hrs	0.315" (8.00mm)	0.276" (7.00mm)	3 A	ROHS3
PCJ1C121MCL1GS	Nichicon	120 µF	16 V	24	2000 Hrs	0.315" (8.00mm)	0.276" (7.00mm)	3.01 A	ROHS3
PCJ1A121MCL1GS	Nichicon	120 µF	10 V	25	2000 Hrs	0.248" (6.30mm)	0.236" (6.00mm)	2.53 A	ROHS3
PCS1A121MCL1GS	Nichicon	120 µF	10 V	27	5000 Hrs	0.248" (6.30mm)	0.236" (6.00mm)	2.3 A	ROHS3
RPS1A121MCN1GS	Nichicon	120 µF	10 V	30	2000 Hrs	0.315" (8.00mm)	0.264" (6.70mm)	2.6 A	ROHS3
APXE160ARA121MH70G	Chemi-Con	120 µF	16 V	24	2000 Hrs	0.315" (8.00mm)	0.264" (6.70mm)	3.01 A	ROHS3
APXA100ARA121MH70G	Chemi-Con	120 µF	10 V	27	15000 Hrs	0.315" (8.00mm)	0.264" (6.70mm)	2.8 A	ROHS3
APXE100ARA121MF61G	Chemi-Con	120 µF	10 V	25	2000 Hrs	0.248" (6.30mm)	0.228" (5.80mm)	2.53 A	ROHS3

Engineering Selection Recommendations

Direct Upgrade (Same Footprint, Enhanced Voltage): PCJ1C121MCL1GS and APXE160ARA121MH70G are 16 V rated upgrades maintaining the 8.00mm diameter footprint. Both are ROHS3 compliant with active product status and identical ripple current handling at 3.01 A @ 100 kHz.

Extended Lifetime Option: APXA100ARA121MH70G provides 15000 hour lifetime at 105°C compared to the standard 2000 hours, maintaining 10 V rating and 8.00mm footprint with ROHS3 compliance and active status.

Compact Footprint Alternatives: PCJ1A121MCL1GS, PCS1A121MCL1GS, and APXE100ARA121MF61G reduce physical size to 6.30mm diameter with compatible 6.60mm land size. PCS1A121MCL1GS offers extended 5000 hour lifetime in this smaller package.

Same-Series Equivalent: RPS1A121MCN1GS maintains the 8.00mm footprint with 10 V rating and ROHS3 compliance, though with higher ESR at 30 mOhm and reduced ripple current capacity at 2.6 A @ 100 kHz.

All substitute parts maintain 120 µF capacitance, ±20% tolerance, -55°C to 105°C operating range, and ROHS3 compliance with active product status.

Frequently Asked Questions (FAQ)

Q: Can PCJ1C121MCL1GS replace PCF1A121MCL1GS in a 10 V application?

A: Yes. PCJ1C121MCL1GS is rated for 16 V, which exceeds the 10 V requirement. The higher voltage rating provides design margin without affecting capacitance, tolerance, or ESR performance. Both maintain identical 8.00mm diameter footprint and ROHS3 compliance.

Q: What is the difference between Nichicon and Chemi-Con substitutes?

A: Both manufacturers provide equivalent electrical specifications for 120 µF, 10 V aluminum polymer capacitors with ±20% tolerance. Chemi-Con NPCAP™ series parts offer extended lifetime options (15000 Hrs) compared to standard Nichicon offerings. All listed parts are ROHS3 compliant and active status.

Q: Can I use a smaller footprint part like PCJ1A121MCL1GS on the same PCB?

A: PCJ1A121MCL1GS uses a 6.30mm diameter footprint with 6.60mm x 6.60mm land size, compared to the original 8.00mm diameter with 8.30mm x 8.30mm land size. Physical PCB layout modification is required. Electrical performance remains equivalent with 120 µF capacitance and 10 V rating.

Q: How does ESR affect substitute part selection?

A: ESR values for listed substitutes range from 23 mOhm to 30 mOhm. Lower ESR (23-25 mOhm) provides better ripple current handling and thermal performance. Selection depends on application ripple current requirements. PCF1A121MCL1GS at 23 mOhm supports 3 A @ 100 kHz, while RPS1A121MCN1GS at 30 mOhm supports 2.6 A @ 100 kHz.

Q: Which substitute offers the longest operational lifetime?

A: APXA100ARA121MH70G (Chemi-Con) provides 15000 hours @ 105°C, compared to 2000-5000 hours for other options. This part maintains 10 V rating, 8.00mm footprint, and ROHS3 compliance with active product status.

Q: Are all substitutes compatible with Tape & Reel packaging?

A: Yes. All listed substitute parts are supplied in Tape & Reel (TR) packaging format, maintaining supply chain compatibility with the original PCF1A121MCL1GS.

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