RC3225F2943CS Equivalent & Substitute Parts

Part Overview

The RC3225F2943CS is a 294 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 and operates across the temperature range of -55°C to 155°C. The part is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts become necessary when the primary part experiences supply constraints, inventory depletion, or when design requirements permit the use of alternative manufacturers' components that meet or exceed the electrical and mechanical specifications of the original part.

Substiute Parts

RC3225F2943CS

Samsung Electro-MechanicsIn Stock: 1072RC3225F2943CS Datasheet

Current PartRFQ

ERJ-14NF2943U

Panasonic Electronic ComponentsIn Stock: 2647ERJ-14NF2943U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F2943CS is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 294 kOhms
• Tolerance: ±1%
• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Number of terminations: 2
• RoHS compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Power rating: Substitute parts may have equal or higher power dissipation ratings (0.333W or greater)
• Physical dimensions: Minor variations within supplier device package specifications are acceptable
• Packaging format: Original part uses standard packaging; substitutes may use alternative packaging (Tape & Reel)
• Product status: Substitutes may have different product status classifications
• Certifications: Substitutes may include additional certifications (such as AEC-Q200) beyond the base requirements

The ERJ-14NF2943U from Panasonic Electronic Components qualifies as a substitute because it maintains all mandatory parameters while offering a higher power rating (0.5W vs. 0.333W) and includes automotive-grade AEC-Q200 certification.

Parameter Comparison

Engineering Selection Recommendations

RC3225F2943CS (Samsung Electro-Mechanics): Select this part for new designs and applications requiring active product status with standard industrial compliance. The component is currently in active production with 1058 pieces available in inventory.

ERJ-14NF2943U (Panasonic Electronic Components): This substitute is suitable for applications where the higher power rating (0.5W) provides additional thermal margin or where AEC-Q200 automotive qualification is required. However, this part carries "Not For New Designs" status, indicating it is in mature or declining production phase. Use this substitute only when the RC3225F2943CS is unavailable and the application permits use of a mature-phase component. The substitute maintains full electrical and mechanical compatibility with identical resistance, tolerance, temperature coefficient, and operating temperature specifications.

Both parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), ensuring compatibility in standard manufacturing and storage environments.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF2943U be used as a direct replacement for RC3225F2943CS?

A: Yes. Both components share identical resistance value (294 kOhms), tolerance (±1%), package format (1210/3225 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The ERJ-14NF2943U provides higher power dissipation (0.5W vs. 0.333W), which is compatible with circuits designed for the lower-rated part.

Q: What are the physical dimension differences between these parts?

A: The RC3225F2943CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with maximum seated height of 0.026" (0.66mm). The ERJ-14NF2943U measures 0.126" L x 0.098" W (3.20mm x 2.50mm) with maximum seated height of 0.028" (0.70mm). Both dimensions fall within the 1210 package specification and are compatible with standard PCB layouts designed for this package format.

Q: Why does the substitute have "Not For New Designs" status?

A: Product status reflects the manufacturer's production phase classification. "Not For New Designs" indicates the part is in mature production with limited future availability. This status does not affect electrical performance or reliability for existing applications but signals that long-term supply may be constrained. For new designs, the RC3225F2943CS (Active status) is the preferred choice.

Q: Are both parts RoHS compliant?

A: Yes. Both RC3225F2943CS and ERJ-14NF2943U are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), meeting current environmental and manufacturing standards.

Q: What is the significance of the AEC-Q200 certification on the substitute?

A: AEC-Q200 is an automotive-grade qualification standard. The ERJ-14NF2943U includes this certification, indicating it meets automotive industry reliability and performance requirements. This certification is not present on the RC3225F2943CS but does not prevent use of the substitute in non-automotive applications.