RC3225F3400CS Equivalent & Substitute Parts

Part Overview

The RC3225F3400CS is a 340 Ohm ±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 and is ROHS3 compliant with MSL 1 moisture sensitivity rating.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this resistor category. The primary substitute listed is the ERJ-14NF3400U from Panasonic Electronic Components, which shares the same resistance value, tolerance, package format, and operating temperature range.

Substiute Parts

RC3225F3400CS

Samsung Electro-MechanicsIn Stock: 882RC3225F3400CS Datasheet

Current PartRFQ

ERJ-14NF3400U

Panasonic Electronic ComponentsIn Stock: 5220ERJ-14NF3400U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC3225F3400CS is based on the following criteria:

Electrical Parameters (Critical):

• Resistance value must be 340 Ohms
• Tolerance must be ±1% or tighter
• Temperature coefficient ±100ppm/°C
• Operating temperature range must span -55°C to 155°C minimum

Mechanical Parameters (Critical):

• Package format must be 1210 (3225 Metric)
• Physical dimensions must be compatible with PCB footprint
• Number of terminations must be 2

Performance Parameters (Conditional):

• Power rating of substitute must equal or exceed 0.333W (1/3W)
• Composition must be thick film
• Moisture sensitivity level MSL 1 or better

Compliance Parameters:

• RoHS3 compliance required
• REACH unaffected status maintained

The ERJ-14NF3400U meets all critical electrical and mechanical parameters. It provides a higher power rating (0.5W vs 0.333W), which is acceptable for substitution purposes. However, the ERJ-14NF3400U carries a "Not For New Designs" product status designation, which must be considered in design decisions.

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs: The RC3225F3400CS is the primary selection. It carries Active product status and is suitable for new design implementations. Samsung Electro-Mechanics maintains this component in active production with 774 pieces available in current inventory.

For Existing Designs or Replacement Applications: The ERJ-14NF3400U from Panasonic Electronic Components is electrically and mechanically compatible. All critical parameters align with the RC3225F3400CS specifications. The substitute provides equal or superior performance characteristics:

• Identical resistance and tolerance
• Higher power rating (0.5W vs 0.333W) provides additional thermal margin
• Identical operating temperature range
• Identical moisture sensitivity and compliance ratings

Product Status Consideration: The ERJ-14NF3400U carries "Not For New Designs" status. This designation indicates Panasonic has discontinued active development for this part number. For new product development, the RC3225F3400CS is the recommended choice. For legacy system support or replacement stock, the ERJ-14NF3400U remains functionally equivalent and is available in higher inventory quantities (5200 pieces).

Compliance and Regulatory: Both parts maintain ROHS3 compliance and REACH unaffected status. No regulatory barriers exist for either selection.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-14NF3400U directly replace the RC3225F3400CS on existing PCBs?

A: Yes. Both components use the 1210 (3225 Metric) package format with compatible physical dimensions. The ERJ-14NF3400U dimensions (3.20mm x 2.50mm) are within tolerance of the RC3225F3400CS (3.20mm x 2.55mm). Height specifications (0.70mm vs 0.66mm maximum) are also compatible. No PCB layout modifications are required.

Q: What is the significance of the higher power rating on the ERJ-14NF3400U?

A: The ERJ-14NF3400U is rated for 0.5W (1/2W) compared to the RC3225F3400CS at 0.333W (1/3W). In substitution applications, a higher power rating is acceptable and provides additional thermal margin. The component can safely dissipate more power without exceeding temperature limits. This does not create compatibility issues in circuits designed for the lower-rated component.

Q: Why is the ERJ-14NF3400U marked "Not For New Designs"?

A: This designation indicates Panasonic has transitioned this part number to end-of-life status and is not actively developing or promoting it for new applications. Existing inventory remains available and the part is fully functional. For new product development, Samsung's RC3225F3400CS is the recommended primary selection to ensure long-term supply continuity.

Q: Are there any electrical performance differences between these two parts?

A: No. Both components share identical resistance (340 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Electrical performance is equivalent. The primary difference is the power rating and product lifecycle status.

Q: What is MSL 1 moisture sensitivity level?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life under normal storage conditions. No special moisture control or baking procedures are required before soldering. Both the RC3225F3400CS and ERJ-14NF3400U carry this rating, simplifying inventory management and handling.

Q: Can I use these parts interchangeably in automotive applications?

A: The ERJ-14NF3400U carries AEC-Q200 automotive qualification. The RC3225F3400CS does not list automotive certification in the provided specifications. For automotive applications requiring AEC-Q200 compliance, the ERJ-14NF3400U is the appropriate selection. For non-automotive applications, both parts are suitable.