RC3225F6490CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F6490CS is a 649 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 with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, temperature coefficient) and mechanical compatibility (package size, termination count) while accounting for variations in power rating and application-specific certifications.

Substiute Parts

RC3225F6490CS

Samsung Electro-MechanicsIn Stock: 830RC3225F6490CS Datasheet

Current PartRFQ

CRCW1210649RFKEA

Vishay DaleIn Stock: 13356CRCW1210649RFKEA Datasheet

SimilarRFQ

ERJ-14NF6490U

Panasonic Electronic ComponentsIn Stock: 3373ERJ-14NF6490U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC3225F6490CS are qualified based on the following criteria:

Electrical Compatibility Requirements:

• Resistance value: 649 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)

Mechanical Compatibility Requirements:

• Package format: 1210 (3225 Metric) (exact match required)
• Number of terminations: 2 (exact match required)
• Composition: Thick film (exact match required)

Allowable Variations:

• Power rating: Substitutes may have equal or higher power dissipation capacity (0.5W acceptable for 0.333W applications)
• Packaging format: Tape & Reel acceptable for component-level substitution
• Application certifications: Automotive AEC-Q200 qualification is an enhancement, not a requirement

The identified substitute parts meet all electrical and mechanical compatibility criteria while offering enhanced power handling or automotive-grade certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CRCW1210649RFKEA (Vishay Dale)

The CRCW1210649RFKEA is the preferred substitute for the RC3225F6490CS. This part maintains identical electrical specifications (649 Ohms ±1%, ±100ppm/°C, -55°C to 155°C) and mechanical compatibility (1210 package, 2 terminations, thick film composition). The higher power rating of 0.5W provides additional thermal margin compared to the 0.333W specification of the original part. The component carries Active product status and ROHS3 compliance with AEC-Q200 automotive qualification, supporting applications requiring automotive-grade reliability.

Secondary Substitute: ERJ-14NF6490U (Panasonic Electronic Components)

The ERJ-14NF6490U meets all electrical and mechanical compatibility requirements with identical resistance, tolerance, temperature coefficient, and operating temperature range. The 0.5W power rating exceeds the original specification. However, this part carries a "Not For New Designs" product status designation, limiting its suitability for new development projects. The AEC-Q200 automotive certification is present. This substitute is appropriate for legacy system maintenance or replacement applications where design freeze conditions apply.

Selection Criteria:

For new designs and active development: Select CRCW1210649RFKEA based on Active product status and full compliance with current manufacturing standards.

For legacy system support or replacement applications: ERJ-14NF6490U is acceptable where design constraints or inventory management require use of existing qualified parts.

Frequently Asked Questions (FAQ)

Q: Can the CRCW1210649RFKEA replace the RC3225F6490CS in existing designs?

A: Yes. The CRCW1210649RFKEA provides identical electrical performance (649 Ohms ±1%, ±100ppm/°C) and mechanical compatibility (1210 package, 2 terminations). The higher power rating (0.5W vs. 0.333W) is a non-limiting enhancement for applications designed around the original 0.333W specification.

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF6490U?

A: This designation indicates that Panasonic has discontinued active development and marketing of this part for new applications. While the component remains functionally equivalent and available in inventory, it is not recommended for new product designs. Use this part only for replacement or maintenance of existing systems where the part is already qualified.

Q: Are there dimensional differences between these substitute parts?

A: Minor dimensional variations exist within acceptable tolerances. The RC3225F6490CS has a maximum seated height of 0.026" (0.66mm), while both substitutes specify 0.024" (0.60mm) and 0.028" (0.70mm) respectively. These variations remain within the 1210 package specification and do not affect PCB layout or assembly compatibility.

Q: Do all three parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level). The CRCW1210649RFKEA and ERJ-14NF6490U include additional AEC-Q200 automotive qualification, which is not specified for the RC3225F6490CS but does not create incompatibility.

Q: What is the difference between Tape & Reel and standard packaging?

A: Tape & Reel (TR) packaging is the standard format for automated assembly processes. Both substitute parts are supplied in Tape & Reel format, which is compatible with standard pick-and-place equipment. This packaging format does not affect component performance or electrical characteristics.