RC3225F4870CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F4870CS is a 487 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 with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The part is designed for general-purpose applications requiring precision resistive elements with moisture resistance in compact surface-mount form factors. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across alternative manufacturers while accounting for differences in power rating, automotive qualification, and product lifecycle status.

Substiute Parts

RC3225F4870CS

Samsung Electro-MechanicsIn Stock: 1164RC3225F4870CS Datasheet

Current PartRFQ

ERJ-14NF4870U

Panasonic Electronic ComponentsIn Stock: 5677ERJ-14NF4870U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F4870CS is determined by strict adherence to the following parameters:

Mandatory Match Criteria:

• Resistance value: 487 Ohms (exact match required)
• Package type: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Tolerance: ±1% or better
• RoHS3 compliance status
• Moisture Sensitivity Level: MSL 1 or better

Allowable Variation Criteria:

• Power rating: Substitute must equal or exceed 0.333W minimum
• Temperature coefficient: ±100ppm/°C or better
• Operating temperature range: Must encompass -55°C to 155°C minimum
• Product status: Active or Not For New Designs both acceptable for equivalent substitution
• Packaging format: Tape & Reel acceptable as functional equivalent to standard packaging

The identified substitute ERJ-14NF4870U meets all mandatory criteria while providing enhanced power rating (0.5W vs. 0.333W) and automotive-grade qualification (AEC-Q200), making it suitable for applications requiring higher power dissipation or automotive reliability standards.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC3225F4870CS): The RC3225F4870CS remains the recommended choice for new designs due to its Active product status, ensuring long-term availability and manufacturer support. This part is suitable for general-purpose applications where standard power dissipation (0.333W) is sufficient and automotive qualification is not required.

Substitute Selection (ERJ-14NF4870U): The ERJ-14NF4870U is electrically and mechanically compatible as a direct substitute. Selection of this part is appropriate when:

• Higher power dissipation capability (0.5W) is required for thermal margin
• Automotive-grade reliability (AEC-Q200) is specified
• Supply continuity from Panasonic is preferred

The "Not For New Designs" status of ERJ-14NF4870U indicates this part is in mature lifecycle phase; however, it remains functionally equivalent and available in inventory (5620 Pcs). Use of this substitute in new designs should be evaluated against long-term supply and support requirements.

Compliance Verification: Both parts maintain ROHS3 compliance, MSL 1 rating, and identical electrical specifications (487 Ohms ±1%, ±100ppm/°C, -55°C to 155°C operating range). Dimensional variations (width 2.55mm vs. 2.50mm, height 0.66mm vs. 0.70mm) are within standard PCB layout tolerances for 1210 package footprints.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF4870U be used as a direct replacement for RC3225F4870CS in existing designs?

A: Yes. The ERJ-14NF4870U is electrically and mechanically compatible. Both parts share identical resistance (487 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), operating range (-55°C to 155°C), and package type (1210). The substitute provides higher power rating (0.5W vs. 0.333W), which is a non-limiting enhancement. Dimensional differences (width and height) are within standard 1210 package tolerances and do not affect PCB footprint compatibility.

Q: What is the significance of the "Not For New Designs" status on ERJ-14NF4870U?

A: This designation indicates the part is in mature or declining lifecycle phase at the manufacturer. While the part remains functionally equivalent and currently in stock, it may have limited future availability or reduced manufacturer support. For new product development, RC3225F4870CS (Active status) is preferred to ensure long-term supply continuity. ERJ-14NF4870U is suitable for replacement or repair of existing systems.

Q: Are there dimensional differences between these parts, and do they affect PCB design?

A: Minor dimensional variations exist: RC3225F4870CS measures 3.20mm L x 2.55mm W x 0.66mm H (max), while ERJ-14NF4870U measures 3.20mm L x 2.50mm W x 0.70mm H (max). These differences fall within standard 1210 (3225 Metric) package tolerances. Both parts use identical footprint patterns and are compatible with standard 1210 PCB layouts without design modification.

Q: Does ERJ-14NF4870U's AEC-Q200 automotive qualification affect its use in non-automotive applications?

A: No. AEC-Q200 qualification is an additional quality and reliability standard that exceeds general-purpose requirements. A part with automotive qualification can be used in non-automotive applications without restriction. The automotive-grade part may offer enhanced reliability margins, making it suitable for demanding environments regardless of application sector.

Q: What is the practical difference between 0.333W and 0.5W power ratings for this resistor?

A: The power rating indicates maximum continuous power dissipation. RC3225F4870CS is rated for 0.333W, while ERJ-14NF4870U is rated for 0.5W. In applications where actual power dissipation is below 0.333W, both parts perform identically. The higher rating on the substitute provides additional thermal margin and is never a limiting factor. Selection should be based on actual circuit power requirements; if 0.333W is sufficient, either part is acceptable.

Q: Are both parts RoHS3 compliant and suitable for regulated markets?

A: Yes. Both RC3225F4870CS and ERJ-14NF4870U are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. Both meet REACH requirements (REACH Unaffected status). These parts are suitable for applications in regulated markets including EU, China, and other regions with RoHS/REACH requirements.