RC3225F1821CS Equivalent & Substitute Parts

Part Overview

The RC3225F1821CS is a 1.82 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format. This component is rated for 0.333W (1/3W) power dissipation with a moisture-resistant design and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with 1017 units currently in stock.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative specifications within acceptable electrical and mechanical tolerances. The RC3225F1821CS has one identified equivalent substitute that maintains compatibility with the specified resistance value and package format.

Substiute Parts

RC3225F1821CS

Samsung Electro-MechanicsIn Stock: 1111RC3225F1821CS Datasheet

Current PartRFQ

ERJ-14NF1821U

Panasonic Electronic ComponentsIn Stock: 11662ERJ-14NF1821U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F1821CS is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.82 kOhms
• Tolerance: ±1%
• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Compliance: ROHS3 Compliant

Allowable Variation:

• Power rating may exceed the original specification (0.333W minimum required)
• Physical dimensions may vary within the 1210 package tolerance
• Packaging format may differ (bulk to Tape & Reel conversion acceptable)

The identified substitute ERJ-14NF1821U meets all mandatory parameters while providing a higher power rating of 0.5W (1/2W), which represents an acceptable upgrade for applications where additional thermal margin is beneficial.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (RC3225F1821CS): The RC3225F1821CS maintains Active product status and is the preferred selection for new designs. This component is currently in stock with 1017 units available and carries full ROHS3 compliance with unlimited moisture sensitivity rating.

Substitute Component (ERJ-14NF1821U): The ERJ-14NF1821U is electrically and mechanically compatible with the RC3225F1821CS across all critical parameters. However, this component carries a "Not For New Designs" product status designation. Selection of this substitute is appropriate only when the primary component is unavailable and existing design validation permits substitution. The higher power rating (0.5W versus 0.333W) provides thermal margin and does not create compatibility issues. The Panasonic component includes AEC-Q200 automotive qualification, which may provide additional reliability assurance for specific applications. Dimensional variations remain within acceptable PCB assembly tolerances for the 1210 package format.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF1821U be used as a direct replacement for RC3225F1821CS?

A: Yes. Both components share identical resistance (1.82 kOhms), tolerance (±1%), package format (1210), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3). The higher power rating of ERJ-14NF1821U (0.5W versus 0.333W) represents an acceptable upgrade that does not compromise circuit performance.

Q: What is the significance of the "Not For New Designs" status on ERJ-14NF1821U?

A: This designation indicates that Panasonic does not recommend this component for new product development. However, it remains available for existing designs and applications where supply continuity is required. The component continues to meet all specified electrical and mechanical parameters.

Q: Are there dimensional differences between these components?

A: Minor dimensional variations exist within the 1210 package specification. RC3225F1821CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with a maximum seated height of 0.026" (0.66mm). ERJ-14NF1821U measures 0.126" L x 0.098" W (3.20mm x 2.50mm) with a maximum seated height of 0.028" (0.70mm). These variations remain within standard PCB assembly tolerances and do not affect board-level compatibility.

Q: What packaging formats are available?

A: RC3225F1821CS is supplied in bulk packaging. ERJ-14NF1821U is supplied in Tape & Reel (TR) format. Both formats are compatible with standard SMD assembly processes. Format selection depends on production volume and assembly equipment capabilities.

Q: Do both components meet the same compliance requirements?

A: Yes. Both RC3225F1821CS and ERJ-14NF1821U are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.