RC3225F6653CS Equivalent & Substitute Parts

Part Overview

The RC3225F6653CS is a 665 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format with a power rating of 0.333W (1/3W). This component is classified as Active product status and is RoHS3 compliant with moisture resistant characteristics suitable for general industrial applications.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across resistance value, tolerance, package format, and operating temperature range. The primary substitute identified is the ERJ-14NF6653U from Panasonic Electronic Components, which shares the same resistance, tolerance, package, and temperature specifications while offering increased power dissipation capability.

Substiute Parts

RC3225F6653CS

Samsung Electro-MechanicsIn Stock: 1160RC3225F6653CS Datasheet

Current PartRFQ

ERJ-14NF6653U

Panasonic Electronic ComponentsIn Stock: 14290ERJ-14NF6653U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F6653CS is determined by strict equivalence across the following parameters:

Mandatory Matching Parameters:

• Resistance value: 665 kOhms
• Tolerance: ±1%
• Package format: 1210 (3225 Metric)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Composition: Thick Film
• Number of terminations: 2

Allowable Variation Parameters:

• Power rating: Equal to or greater than 0.333W
• Physical dimensions: Within standard 1210 package tolerances
• Moisture Sensitivity Level: 1 (Unlimited) or equivalent
• Compliance certifications: May differ based on application requirements

The ERJ-14NF6653U meets all mandatory matching parameters and exceeds the power rating specification at 0.5W (1/2W), making it a direct electrical and mechanical substitute. Dimensional variations remain within acceptable 1210 package specifications.

Parameter Comparison

Engineering Selection Recommendations

RC3225F6653CS (Primary Selection): The RC3225F6653CS is the recommended primary component for new designs. It maintains Active product status, ensuring continued manufacturer support and availability. RoHS3 compliance satisfies regulatory requirements for consumer and industrial applications. The 0.333W power rating is suitable for standard signal conditioning and biasing circuits where thermal dissipation is not a limiting factor.

ERJ-14NF6653U (Substitute for Existing Designs): The ERJ-14NF6653U is suitable as a substitute in existing designs or legacy system maintenance where component replacement is necessary. The increased power rating of 0.5W provides additional thermal margin in applications approaching the original 0.333W specification. However, the "Not For New Designs" status and RoHS non-compliance restrict its use to retrofit and repair scenarios. The AEC-Q200 automotive qualification indicates suitability for automotive applications where the RC3225F6653CS may not be specified.

Selection between these parts depends on application context: use RC3225F6653CS for new designs requiring RoHS compliance; use ERJ-14NF6653U only when replacing existing RC3225F6653CS components in operational systems or when automotive-grade reliability is required.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-14NF6653U be used as a direct replacement for the RC3225F6653CS in new circuit designs?

A: The ERJ-14NF6653U is electrically and mechanically compatible with the RC3225F6653CS. However, the ERJ-14NF6653U carries a "Not For New Designs" status and is RoHS non-compliant. New designs should specify the RC3225F6653CS to ensure compliance with current regulatory standards and manufacturer support.

Q: What is the significance of the power rating difference between 0.333W and 0.5W?

A: The ERJ-14NF6653U's higher power rating of 0.5W indicates greater thermal dissipation capability. In applications where the RC3225F6653CS operates near its 0.333W limit, the ERJ-14NF6653U provides additional thermal margin. However, both components are electrically equivalent at the specified resistance and tolerance values.

Q: Are there dimensional differences between these parts that affect PCB layout?

A: Both components use the 1210 (3225 Metric) package format with compatible footprints. The RC3225F6653CS measures 0.126" L x 0.100" W with 0.026" maximum seated height, while the ERJ-14NF6653U measures 0.126" L x 0.098" W with 0.028" maximum seated height. These variations remain within standard 1210 package tolerances and do not require PCB layout modifications.

Q: What does the AEC-Q200 rating on the ERJ-14NF6653U indicate?

A: AEC-Q200 is an automotive industry qualification standard for passive components. The ERJ-14NF6653U's AEC-Q200 rating indicates compliance with automotive reliability and environmental stress testing requirements. The RC3225F6653CS does not carry this automotive specification.

Q: Why is the RC3225F6653CS RoHS3 compliant while the ERJ-14NF6653U is not?

A: RoHS3 compliance reflects current regulatory requirements for hazardous substance restrictions. The RC3225F6653CS meets these current standards, while the ERJ-14NF6653U's non-compliance indicates it was manufactured under earlier standards. For applications subject to RoHS regulations, the RC3225F6653CS is the appropriate selection.

Q: Can both parts be used interchangeably in existing inventory systems?

A: Both parts share identical electrical specifications (665 kOhms ±1%, ±100ppm/°C, -55°C ~ 155°C operating range) and package format. From a functional standpoint, they are interchangeable in operational circuits. However, inventory management should maintain separate tracking due to differences in product status, compliance certifications, and manufacturer support.