PCR1C121MCL1GS Equivalent & Substitute Parts

Part Overview

The PCR1C121MCL1GS is a 120 µF, 16 V aluminum polymer capacitor in surface mount radial can package manufactured by Nichicon. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part is rated for automotive applications with AEC-Q200 compliance and operates across a temperature range of -55°C to 125°C.

Substiute Parts

PCR1C121MCL1GS

NichiconIn Stock: 892PCR1C121MCL1GS Datasheet

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PCS1C121MCL1GS

NichiconIn Stock: 3274PCS1C121MCL1GS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCR1C121MCL1GS is determined by the following critical parameters:

• Electrical Equivalence: Capacitance (120 µF), voltage rating (16 V), and tolerance (±20%) must match exactly
• Package Compatibility: Surface mount radial can package with compatible land pattern dimensions
• Performance Characteristics: ESR and ripple current ratings must support the intended application
• Environmental Compliance: RoHS3 compliance required for regulatory alignment

The PCS1C121MCL1GS meets these core substitution criteria while offering improved performance characteristics in specific operating conditions.

Parameter Comparison

Engineering Selection Recommendations

The PCS1C121MCL1GS is a direct electrical substitute for the obsolete PCR1C121MCL1GS, with both parts meeting ROHS3 compliance requirements. The substitute offers lower ESR (28 mOhm vs. 36 mOhm) and higher ripple current capability (2.8 A vs. 1.3 A @ 100 kHz), providing improved performance margins in power delivery applications.

Physical dimensions differ between the two parts. The PCS1C121MCL1GS is larger (0.315" diameter vs. 0.248" diameter) with correspondingly larger land pattern requirements (8.30 mm x 8.30 mm vs. 6.60 mm x 6.60 mm). PCB layout modifications are necessary to accommodate the substitute part.

The substitute operates to a maximum temperature of 105°C compared to 125°C for the main part. Applications requiring sustained operation above 105°C require thermal analysis to confirm compatibility.

Frequently Asked Questions (FAQ)

Q: Can the PCS1C121MCL1GS replace the PCR1C121MCL1GS in all applications?

A: Electrical substitution is valid for applications operating within the PCS1C121MCL1GS temperature range (-55°C to 105°C). PCB layout modifications are required due to larger physical dimensions and land pattern size.

Q: What are the key differences between these parts?

A: Both parts share identical capacitance (120 µF), voltage rating (16 V), and tolerance (±20%). The substitute offers lower ESR and higher ripple current. Physical size and maximum operating temperature differ between the two parts.

Q: Are both parts RoHS compliant?

A: Both the PCR1C121MCL1GS and PCS1C121MCL1GS are ROHS3 compliant.

Q: Does the larger package size of the substitute affect compatibility?

A: The PCS1C121MCL1GS requires a larger footprint on the PCB. The land pattern increases from 6.60 mm x 6.60 mm to 8.30 mm x 8.30 mm. PCB redesign is necessary for physical accommodation.

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

A: The substitute is rated to 105°C maximum, compared to 125°C for the main part. Applications with sustained operation above 105°C require thermal verification before substitution.