RC3225F19R1CS Equivalent & Substitute Parts

Part Overview

The RC3225F19R1CS is a 19.1 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package form factor and performance envelope. The primary substitute identified is the ERJ-14NF19R1U from Panasonic Electronic Components, which shares identical resistance, tolerance, and package dimensions while offering enhanced power rating and automotive qualification.

Substiute Parts

RC3225F19R1CS

Samsung Electro-MechanicsIn Stock: 932RC3225F19R1CS Datasheet

Current PartRFQ

ERJ-14NF19R1U

Panasonic Electronic ComponentsIn Stock: 2375ERJ-14NF19R1U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F19R1CS is determined by strict adherence to the following parameters:

Critical Matching Parameters:

• Resistance value: 19.1 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package form factor: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)

Compatible Variation Parameters:

• Power rating: Substitute must equal or exceed 0.333W minimum
• Temperature coefficient: ±100ppm/°C (exact match)
• Operating temperature range: Must encompass -55°C to 155°C minimum
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 or equivalent (exact match required)

The ERJ-14NF19R1U qualifies as a direct substitute because it maintains all critical parameters while providing enhanced power rating (0.5W versus 0.333W), additional automotive qualification (AEC-Q200), and identical electrical and thermal characteristics within the same package envelope.

Parameter Comparison

Engineering Selection Recommendations

For Active Product Designs: The RC3225F19R1CS is the primary selection for new designs due to its Active product status. This component maintains full manufacturing support, standard lead times, and ongoing quality assurance from Samsung Electro-Mechanics.

For Substitute Selection: The ERJ-14NF19R1U from Panasonic Electronic Components is electrically and mechanically compatible as a substitute. However, this part carries "Not For New Designs" status, indicating it is available for legacy system support, repair, or replacement applications only. The substitute provides enhanced power rating (0.5W versus 0.333W) and automotive-grade qualification (AEC-Q200), making it suitable for applications requiring higher thermal margin or automotive compliance.

Compliance Considerations: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory compatibility and unlimited shelf life storage. The identical operating temperature range (-55°C to 155°C) and temperature coefficient (±100ppm/°C) confirm functional equivalence across standard industrial and commercial temperature environments.

Physical Compatibility: Dimensional variations between the two parts (height difference of 0.002" / 0.04mm) fall within standard PCB assembly tolerances and do not affect reflow soldering, component placement, or circuit board layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF19R1U be used as a direct replacement for RC3225F19R1CS in new designs?

A: No. While ERJ-14NF19R1U is electrically and mechanically compatible, it carries "Not For New Designs" status. New designs should specify RC3225F19R1CS to ensure long-term manufacturing support and component availability.

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

A: The ERJ-14NF19R1U provides higher power dissipation capability (0.5W) compared to the RC3225F19R1CS (0.333W). In applications where the circuit requires only 0.333W or less, both parts perform identically. The higher rating on the substitute provides additional thermal margin and may reduce component temperature rise in power-limited applications.

Q: Are the physical dimensions compatible for PCB assembly?

A: Yes. Both parts use the 1210 (3225 Metric) package form factor. The minor dimensional variations (0.002" height difference, 0.002" width difference) are within standard PCB assembly tolerances and do not affect placement, reflow, or circuit board layout.

Q: Does the AEC-Q200 automotive qualification on ERJ-14NF19R1U affect non-automotive applications?

A: No. AEC-Q200 qualification represents an additional quality and reliability standard. In non-automotive applications, this certification provides no functional impact but indicates enhanced quality assurance and testing protocols.

Q: Are there any moisture sensitivity or storage differences between these parts?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life and no special moisture-controlled storage requirements. Handling and storage procedures are identical.

Q: What is the tolerance specification and how does it affect circuit accuracy?

A: Both parts specify ±1% tolerance on the 19.1 Ohm resistance value. This means the actual resistance will fall between 18.909 Ohms and 19.291 Ohms. For circuits requiring tighter tolerance control, alternative parts with ±0.5% or ±0.1% tolerance specifications would be required.

Q: Can these parts be used interchangeably in existing production?

A: Substitution in existing production requires engineering review and approval. While electrical and mechanical compatibility is confirmed, the "Not For New Designs" status of ERJ-14NF19R1U indicates it should be used only for legacy system support or repair applications, not for ongoing production of new units.