RC3225F5490CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F5490CS is a 549 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) surface mount package. This component features moisture-resistant construction with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

The RC3225F5490CS maintains Active product status with 1036 units currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, temperature coefficient) and mechanical compatibility (package size, termination count) while accounting for variations in power rating and application certifications.

Substiute Parts

RC3225F5490CS

Samsung Electro-MechanicsIn Stock: 1138RC3225F5490CS Datasheet

Current PartRFQ

ERJ-14NF5490U

Panasonic Electronic ComponentsIn Stock: 5491ERJ-14NF5490U Datasheet

SimilarRFQ

RMCF1210FT549R

Stackpole Electronics IncIn Stock: 5466RMCF1210FT549R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC3225F5490CS are qualified based on the following substitution criteria:

Mandatory Matching Parameters:

• Resistance value: 549 Ohms
• Tolerance: ±1%
• Package / Case: 1210 (3225 Metric)
• Number of Terminations: 2
• Composition: Thick Film

Allowable Variations:

• Power Rating: Substitutes must equal or exceed 0.333W (1/3W). Higher power ratings (0.5W / 1/2W) are acceptable as they provide additional thermal margin
• Temperature Coefficient: ±100ppm/°C maintained across all qualified substitutes
• Operating Temperature Range: -55°C ~ 155°C maintained across all qualified substitutes
• Regulatory Compliance: ROHS3 compliance and MSL 1 rating maintained
• Product Status: Active or Not For New Designs status does not disqualify substitution if electrical and mechanical parameters align
• Application Certifications: Automotive AEC-Q200 certification present in some substitutes provides additional qualification for automotive applications but is not required for general industrial use

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - RC3225F5490CS (Samsung Electro-Mechanics): The RC3225F5490CS is the recommended primary choice for new designs. It maintains Active product status, ensuring long-term availability and supply chain stability. The component is ROHS3 compliant with MSL 1 rating, suitable for standard industrial and consumer applications requiring moisture-resistant thick film construction.

Secondary Selection - RMCF1210FT549R (Stackpole Electronics Inc): The RMCF1210FT549R qualifies as a direct substitute with Active product status. This component provides identical electrical specifications (549 Ohms ±1%, ±100ppm/°C, -55°C ~ 155°C operating range) with increased power rating (0.5W vs. 0.333W), offering superior thermal margin. Automotive AEC-Q200 certification qualifies this part for automotive applications. Mechanical compatibility is confirmed with 1210 package, 2 terminations, and ROHS3 compliance. Dimensional variation (height 0.028" vs. 0.026") is within acceptable PCB assembly tolerances.

Tertiary Selection - ERJ-14NF5490U (Panasonic Electronic Components): The ERJ-14NF5490U meets all electrical and mechanical substitution criteria with identical resistance, tolerance, temperature coefficient, and operating temperature range. However, this component carries "Not For New Designs" product status, indicating Panasonic has discontinued active development. While currently in stock (5426 units), this status restricts recommendation to legacy system maintenance, repair, or applications where existing supply contracts are established. Automotive AEC-Q200 certification and 0.5W power rating provide equivalent performance to the Stackpole alternative.

Compliance Verification: All three components maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and EAR99 export classification. REACH status is unaffected across all parts. Selection between Active and Not For New Designs status should align with project lifecycle requirements and supply chain strategy.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF5490U replace RC3225F5490CS in new product designs?

A: ERJ-14NF5490U meets all electrical and mechanical substitution criteria (549 Ohms ±1%, 1210 package, ±100ppm/°C, -55°C ~ 155°C). However, Panasonic designates this part as "Not For New Designs," indicating discontinued active development. For new designs, RMCF1210FT549R (Stackpole, Active status) is the preferred substitute. ERJ-14NF5490U is suitable for legacy system maintenance where existing supply agreements exist.

Q: What is the significance of the power rating difference between RC3225F5490CS (0.333W) and substitute parts (0.5W)?

A: The RC3225F5490CS is rated at 0.333W (1/3W), while ERJ-14NF5490U and RMCF1210FT549R are rated at 0.5W (1/2W). Substitutes with higher power ratings provide additional thermal dissipation capability and margin. This variation does not affect substitution validity; higher power ratings ensure the substitute can handle the same or greater thermal load. Verify circuit power dissipation requirements do not exceed the lowest rated component in the substitution set.

Q: Are dimensional differences between RC3225F5490CS and substitute parts significant for PCB assembly?

A: Dimensional variations exist: RC3225F5490CS measures 0.126" L x 0.100" W with 0.026" max height; substitutes measure 0.126" L x 0.098" W with 0.028" max height. Length remains identical (3.20mm). Width variation (2.55mm vs. 2.50mm) and height variation (0.66mm vs. 0.70mm) are within standard PCB pad tolerance specifications for 1210 packages. No PCB redesign is required for substitution.

Q: Do automotive applications require AEC-Q200 certification?

A: Automotive applications benefit from AEC-Q200 certification, which RMCF1210FT549R and ERJ-14NF5490U provide. The RC3225F5490CS lacks this certification. For automotive use, RMCF1210FT549R (Active status) is the recommended choice. For non-automotive industrial or consumer applications, RC3225F5490CS is acceptable.

Q: What is the impact of "Not For New Designs" status on ERJ-14NF5490U?

A: "Not For New Designs" indicates Panasonic has ceased active development and marketing of this component. While currently in stock (5426 units available), this status signals potential future discontinuation. For new product development, select RC3225F5490CS (Active) or RMCF1210FT549R (Active). ERJ-14NF5490U is appropriate for repair, maintenance, or legacy system support where supply continuity is already established.

Q: Are all three parts ROHS3 compliant and suitable for regulated markets?

A: Yes. RC3225F5490CS, ERJ-14NF5490U, and RMCF1210FT549R are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All three carry EAR99 export classification and REACH Unaffected status. Regulatory compliance is equivalent across all substitutes for standard industrial and consumer markets.

Q: Can substitutes be mixed in the same production batch?

A: All three parts meet identical electrical specifications (549 Ohms ±1%, ±100ppm/°C, -55°C ~ 155°C) and mechanical requirements (1210 package, 2 terminations). Mixing is technically permissible from a functional standpoint. However, manufacturing and quality control practices typically recommend single-source component selection per production batch to maintain traceability, consistency, and warranty documentation. Consult procurement and quality assurance procedures for specific guidance.