RC3225F3091CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F3091CS is a 3.09 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 maintains Active product status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute components become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit higher power ratings or alternative certifications such as automotive qualification.

Substiute Parts

RC3225F3091CS

Samsung Electro-MechanicsIn Stock: 1020RC3225F3091CS Datasheet

Current PartRFQ

ERJ-14NF3091U

Panasonic Electronic ComponentsIn Stock: 6252ERJ-14NF3091U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F3091CS is determined by the following mandatory parameters:

Electrical Parameters (Non-negotiable):

• Resistance value: 3.09 kOhms
• Tolerance: ±1% (tighter tolerances acceptable)
• Power rating: minimum 0.333W (higher ratings acceptable)
• Temperature coefficient: ±100ppm/°C or better
• Operating temperature range: must encompass -55°C to 155°C

Mechanical Parameters (Non-negotiable):

• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Number of terminations: 2

Compliance Parameters (Required):

• RoHS3 compliance
• MSL rating: 1 (Unlimited) or equivalent

The ERJ-14NF3091U from Panasonic Electronic Components qualifies as a substitute because it maintains identical resistance, tolerance, package dimensions, temperature coefficient, and operating temperature range. The higher power rating (0.5W versus 0.333W) provides additional thermal margin and does not compromise circuit performance. Both components share RoHS3 compliance and MSL 1 ratings.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (RC3225F3091CS): The Samsung Electro-Mechanics RC3225F3091CS maintains Active product status and represents the preferred selection for new designs. This component is currently in stock with 957 pieces available. Use this part for all new circuit designs and production runs where supply is available.

Substitute Component (ERJ-14NF3091U): The Panasonic ERJ-14NF3091U qualifies as a direct electrical and mechanical substitute. This component carries AEC-Q200 automotive qualification, which provides additional reliability assurance beyond standard industrial specifications. However, the part is designated "Not For New Designs" by the manufacturer, indicating end-of-life status. The ERJ-14NF3091U is suitable for:

• Replacement in existing production runs when primary component supply is constrained
• Applications requiring automotive-grade reliability certification
• Designs where the higher 0.5W power rating provides beneficial thermal margin

The higher power rating of the substitute (0.5W versus 0.333W) does not introduce compatibility issues and may improve thermal performance in power-dissipation-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF3091U be used as a direct replacement for RC3225F3091CS in existing designs?

A: Yes. Both components share identical electrical specifications (3.09 kOhms, ±1% tolerance, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range) and identical package dimensions (1210/3225 Metric). The higher power rating of the substitute (0.5W versus 0.333W) does not create compatibility issues. Both components are RoHS3 compliant with MSL 1 ratings.

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF3091U?

A: This designation indicates that Panasonic has discontinued active development and long-term support for this part number. While the component remains functionally equivalent and suitable for replacement applications, it should not be selected for new circuit designs where the RC3225F3091CS (Active status) is available. Use the substitute only when primary component supply is unavailable.

Q: Are there physical dimension differences between these components?

A: Dimensions are functionally equivalent. RC3225F3091CS measures 0.126" L × 0.100" W (3.20mm × 2.55mm) with maximum seated height of 0.026" (0.66mm). ERJ-14NF3091U measures 0.126" L × 0.098" W (3.20mm × 2.50mm) with maximum seated height of 0.028" (0.70mm). These minor variations fall within standard PCB layout tolerances and do not affect interchangeability.

Q: Does the AEC-Q200 certification on the substitute provide additional benefits?

A: AEC-Q200 certification indicates the ERJ-14NF3091U meets automotive industry reliability and qualification standards. This certification is relevant only if your application requires automotive-grade components. For standard industrial applications, both components provide equivalent performance.

Q: Can the substitute be used in high-temperature applications?

A: Both components support the identical operating temperature range of -55°C to 155°C with ±100ppm/°C temperature coefficient. Neither component offers advantages in high-temperature performance. Selection should be based on availability and product status rather than thermal capability.

Q: What packaging formats are available for these components?

A: RC3225F3091CS is supplied in standard packaging (957 pieces in stock). ERJ-14NF3091U is supplied in Tape & Reel (TR) format (6157 pieces in stock). Verify packaging compatibility with your procurement and assembly processes before substitution.