RC3225F24R3CS Equivalent & Substitute Parts

Part Overview

The RC3225F24R3CS is a 24.3 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

RC3225F24R3CS

Samsung Electro-MechanicsIn Stock: 668RC3225F24R3CS Datasheet

Current PartRFQ

ERJ-14NF24R3U

Panasonic Electronic ComponentsIn Stock: 21013ERJ-14NF24R3U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F24R3CS is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 24.3 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match or better required)
• Composition: Thick Film (exact match required)

Allowable Variation Parameters:

• Power Rating: Substitute parts may have equal or higher power dissipation rating
• Moisture Sensitivity Level: MSL 1 is acceptable across all candidates
• RoHS Status: ROHS3 compliance required for all substitutes

The identified substitute ERJ-14NF24R3U meets all mandatory parameters with an allowable increase in power rating from 0.333W to 0.5W, maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

RC3225F24R3CS (Primary Selection): The RC3225F24R3CS is the recommended primary component for new designs. It maintains Active product status with Samsung Electro-Mechanics, ensuring long-term availability and supply chain stability. The component is fully RoHS3 compliant with MSL 1 rating, suitable for standard industrial and commercial applications across the -55°C to 155°C operating range.

ERJ-14NF24R3U (Substitute Selection): The ERJ-14NF24R3U from Panasonic Electronic Components is electrically and mechanically compatible as a direct substitute. The higher power rating (0.5W versus 0.333W) provides additional thermal margin in the application circuit. However, this part carries "Not For New Designs" status, restricting its use to legacy system maintenance, field replacements, or applications where existing inventory must be utilized. The automotive AEC-Q200 qualification of the ERJ-14NF24R3U provides enhanced reliability documentation for demanding environments.

Selection Criteria:

• Use RC3225F24R3CS for new product development and long-term production runs
• Use ERJ-14NF24R3U only when RC3225F24R3CS is unavailable and legacy compatibility is acceptable
• Both parts satisfy identical electrical performance requirements within the specified tolerance and temperature range
• Dimensional compatibility is confirmed; PCB layout modifications are not required

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF24R3U be used as a direct replacement for RC3225F24R3CS in existing designs?

A: Yes. The ERJ-14NF24R3U is electrically and mechanically compatible. Both components share identical resistance value (24.3 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and 1210 package dimensions. The higher power rating (0.5W versus 0.333W) does not create incompatibility; it provides additional thermal capacity. Dimensional variations (width 2.50mm versus 2.55mm, height 0.70mm versus 0.66mm) are within standard PCB assembly tolerances.

Q: What is the significance of the "Not For New Designs" status on ERJ-14NF24R3U?

A: This designation indicates that Panasonic has discontinued active development and long-term production commitment for this part number. While the component remains functionally equivalent and available in current inventory (20,964 pieces), it should not be selected for new product designs requiring multi-year production support. This status does not affect electrical performance or reliability for existing applications.

Q: Are there any compliance differences between RC3225F24R3CS and ERJ-14NF24R3U?

A: Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8533.21.0030. Compliance status is equivalent. The ERJ-14NF24R3U carries additional AEC-Q200 automotive qualification, which is a superset qualification not present in the RC3225F24R3CS specification.

Q: What packaging formats are available for these parts?

A: RC3225F24R3CS is supplied in standard packaging (specific format not detailed in specifications). ERJ-14NF24R3U is available in Tape & Reel (TR) format, suitable for automated assembly processes. Packaging format selection depends on production volume and assembly equipment compatibility.

Q: Can these 1210 resistors be substituted with different package sizes?

A: No. The 1210 (3225 Metric) package is a specific mechanical and electrical standard. Substitution with different package sizes (0805, 1206, 1812, etc.) requires PCB layout redesign and is not considered a direct equivalent substitution. Package compatibility is a mandatory matching criterion.

Q: What is the temperature coefficient significance for this application?

A: Both parts specify ±100ppm/°C temperature coefficient, meaning resistance value changes by approximately 0.01% per degree Celsius across the operating range. This specification is identical between main and substitute parts, ensuring equivalent performance stability across the -55°C to 155°C operating window.