RC3225F46R4CS Equivalent & Substitute Parts

Part Overview

The RC3225F46R4CS is a 46.4 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) in a 1210 (3225 Metric) package. This component is classified as Active product status and is currently in stock with 1022 pieces available. The part is designed for applications requiring moisture-resistant thick film construction with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

RC3225F46R4CS

Samsung Electro-MechanicsIn Stock: 1091RC3225F46R4CS Datasheet

Current PartRFQ

ERJ-14NF46R4U

Panasonic Electronic ComponentsIn Stock: 10886ERJ-14NF46R4U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F46R4CS is determined by strict adherence to the following criteria:

Mandatory Matching Parameters:

• Resistance value: 46.4 Ohms
• Tolerance: ±1%
• Package / Case: 1210 (3225 Metric)
• Composition: Thick Film
• Number of Terminations: 2
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation:

• Power Rating: Substitute parts may have equal or higher power rating than the main part (0.333W minimum)
• Physical dimensions: Minor variations within package specification tolerance are acceptable
• Product Status: Substitutes may have different product status classifications

The ERJ-14NF46R4U from Panasonic Electronic Components meets all mandatory matching parameters with an increased power rating of 0.5W (1/2W), providing additional thermal margin while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

RC3225F46R4CS (Primary Selection): The RC3225F46R4CS maintains Active product status, indicating ongoing manufacturer support and availability. This part is recommended for new designs and applications where long-term supply continuity is required. ROHS3 compliance and unlimited MSL rating ensure suitability for standard industrial and commercial environments.

ERJ-14NF46R4U (Substitute Selection): The ERJ-14NF46R4U is classified as Not For New Designs, indicating the manufacturer has discontinued active development for this part number. However, it remains electrically and mechanically compatible with the RC3225F46R4CS for existing designs requiring component replacement or inventory supplementation. The increased power rating of 0.5W provides additional thermal headroom compared to the 0.333W specification of the main part. This substitute is suitable for legacy system maintenance and repair applications where the higher power rating does not create design conflicts.

Both parts maintain identical resistance, tolerance, temperature coefficient, operating temperature range, and compliance certifications. Physical dimensions remain within standard package tolerance specifications for the 1210 (3225 Metric) footprint.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF46R4U be used as a direct replacement for RC3225F46R4CS in existing designs?

A: Yes. The ERJ-14NF46R4U is electrically and mechanically compatible with the RC3225F46R4CS. Both parts share identical resistance (46.4 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and package footprint (1210 / 3225 Metric). The higher power rating of the substitute (0.5W vs. 0.333W) does not create compatibility issues and provides additional thermal margin.

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF46R4U?

A: This designation indicates that Panasonic has discontinued active development and promotion of this part number. While the component remains available and functional, new product designs should prioritize the RC3225F46R4CS or other Active-status alternatives. The ERJ-14NF46R4U is appropriate for sustaining production, repair, and maintenance of existing systems.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within standard package tolerance. The RC3225F46R4CS measures 0.126" L x 0.100" W (3.20mm x 2.55mm) with a maximum seated height of 0.026" (0.66mm). The ERJ-14NF46R4U 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 the 1210 (3225 Metric) package specification and do not affect PCB layout or assembly compatibility.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the RC3225F46R4CS and ERJ-14NF46R4U are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level). Both parts carry the same ECCN (EAR99) and HTSUS (8533.21.0030) classifications.

Q: What is the difference in power rating between these parts?

A: The RC3225F46R4CS is rated at 0.333W (1/3W), while the ERJ-14NF46R4U is rated at 0.5W (1/2W). The higher power rating of the substitute allows for greater current dissipation and thermal tolerance. In applications where the original 0.333W specification is adequate, the 0.5W substitute will operate with reduced thermal stress.

Q: Are there packaging differences between these parts?

A: The RC3225F46R4CS is supplied in standard packaging (not specified in detail). The ERJ-14NF46R4U is supplied in Tape & Reel (TR) format. Both parts are suitable for automated assembly processes. Packaging format selection depends on production volume and assembly equipment compatibility.