RC3225F3403CS Equivalent & Substitute Parts

Part Overview

The RC3225F3403CS is a 340 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 currently in active production status and carries ROHS3 compliance certification with MSL 1 moisture sensitivity rating.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications. The RC3225F3403CS has documented substitute availability through Panasonic Electronic Components.

Substiute Parts

RC3225F3403CS

Samsung Electro-MechanicsIn Stock: 963RC3225F3403CS Datasheet

Current PartRFQ

ERJ-14NF3403U

Panasonic Electronic ComponentsIn Stock: 5389ERJ-14NF3403U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC3225F3403CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 340 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
• Moisture sensitivity level: 1 (Unlimited)

Allowable Variation:

• Power rating: The substitute may equal or exceed the original 0.333W specification
• Compliance certifications: Substitutes may carry different compliance profiles (RoHS status, automotive ratings) provided they do not introduce incompatibilities with the application

The ERJ-14NF3403U from Panasonic Electronic Components meets all mandatory matching parameters while providing a higher power rating of 0.5W (1/2W), making it suitable for applications where the original part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

RC3225F3403CS (Samsung Electro-Mechanics): Use as the primary component selection. The part is in active production status with ROHS3 compliance certification. Current inventory of 867 pieces is available. This component is suitable for new design implementations and applications requiring RoHS3 compliance.

ERJ-14NF3403U (Panasonic Electronic Components): Use as a substitute when RC3225F3403CS supply is constrained or unavailable. The ERJ-14NF3403U carries "Not For New Designs" status and RoHS non-compliance designation. However, it meets all mandatory electrical and mechanical parameters. The higher power rating (0.5W versus 0.333W) provides additional thermal margin. This substitute is appropriate for legacy design support, repair applications, or situations where RoHS compliance is not a requirement. Inventory availability is higher at 5309 pieces.

The dimensional differences (width 2.50mm versus 2.55mm, height 0.70mm versus 0.66mm) are within typical PCB layout tolerances for 1210 package footprints and do not preclude direct substitution on standard 1210 pads.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF3403U replace RC3225F3403CS in new product designs?

A: The ERJ-14NF3403U meets all mandatory electrical and mechanical parameters for direct substitution. However, the part carries "Not For New Designs" status from the manufacturer. If RoHS3 compliance is required, the RC3225F3403CS is the appropriate choice. For applications where RoHS compliance is not mandated, the ERJ-14NF3403U is electrically and mechanically compatible.

Q: What is the significance of the power rating difference (0.333W vs 0.5W)?

A: The ERJ-14NF3403U has a higher power dissipation rating. In applications where the circuit dissipates power within the 0.333W specification of the original part, the higher rating of the substitute provides additional thermal margin without affecting circuit performance. The substitute will not operate at higher power levels than the original design requires.

Q: Are there dimensional compatibility concerns?

A: The ERJ-14NF3403U dimensions (3.20mm x 2.50mm x 0.70mm) differ slightly from the RC3225F3403CS (3.20mm x 2.55mm x 0.66mm). Both parts conform to the 1210 (3225 Metric) package standard. These variations fall within standard PCB layout tolerances and do not prevent direct footprint substitution on designs using 1210 pads.

Q: What does "Not For New Designs" mean for the ERJ-14NF3403U?

A: This designation indicates that Panasonic recommends against using this part in new product development. The part remains available for existing applications and legacy support. For new designs, the RC3225F3403CS is the recommended primary selection.

Q: Are there compliance differences between these parts?

A: The RC3225F3403CS is ROHS3 compliant. The ERJ-14NF3403U is RoHS non-compliant. Both parts are REACH unaffected and carry EAR99 ECCN classification. Applications subject to RoHS requirements must use the RC3225F3403CS.

Q: Can these parts be used interchangeably in automotive applications?

A: The ERJ-14NF3403U carries AEC-Q200 automotive qualification. The RC3225F3403CS does not list automotive certification. For automotive applications requiring AEC-Q200 compliance, the ERJ-14NF3403U meets this requirement. For non-automotive applications, both parts are suitable.