RC3225F6191CS Equivalent & Substitute Parts

Part Overview

The RC3225F6191CS is a 6.19 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 with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with 985 units currently in stock.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit higher power ratings or alternative certifications. The ERJ-14NF6191U from Panasonic Electronic Components serves as a qualified equivalent, though it carries a "Not For New Designs" status and offers enhanced automotive qualification.

Substiute Parts

RC3225F6191CS

Samsung Electro-MechanicsIn Stock: 1057RC3225F6191CS Datasheet

Current PartRFQ

ERJ-14NF6191U

Panasonic Electronic ComponentsIn Stock: 20885ERJ-14NF6191U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F6191CS is determined by strict adherence to the following parameters:

Critical Match Requirements:

• Resistance value: 6.19 kOhms (exact match)
• Tolerance: ±1% (minimum requirement)
• Package: 1210 (3225 Metric) (identical footprint)
• Composition: Thick Film (electrical characteristics)
• Temperature Coefficient: ±100ppm/°C (stability specification)
• Operating Temperature Range: -55°C to 155°C (minimum coverage)
• RoHS3 Compliance (regulatory requirement)

Acceptable Variations:

• Power Rating: Substitutes may exceed 0.333W (higher ratings provide additional thermal margin)
• Moisture Sensitivity Level: Substitutes may exceed MSL 1 (more stringent handling is acceptable)
• Product Status: Active or Not For New Designs (both are valid for replacement applications)
• Certifications: Additional qualifications (such as AEC-Q200) are acceptable enhancements

The ERJ-14NF6191U meets all critical match requirements while offering 0.5W power rating and automotive AEC-Q200 qualification, making it a valid substitute despite its "Not For New Designs" status.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (RC3225F6191CS): Select the RC3225F6191CS for new designs and applications requiring long-term supply continuity. This component maintains Active product status, ensuring ongoing manufacturer support and availability. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating, suitable for standard industrial and commercial applications.

Substitute Component (ERJ-14NF6191U): The ERJ-14NF6191U is suitable for replacement and retrofit applications where supply of the primary component is unavailable. Although designated "Not For New Designs," this component meets all critical electrical and mechanical specifications. The higher 0.5W power rating provides additional thermal margin in applications where the 0.333W rating is marginal. The AEC-Q200 automotive qualification indicates enhanced reliability screening and is acceptable for non-automotive applications.

Compliance Considerations: Both components maintain ROHS3 compliance and MSL 1 rating. Dimensional variations (width and height) are within acceptable tolerances for standard PCB assembly processes and do not affect functional performance or thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF6191U replace RC3225F6191CS in existing designs?

A: Yes. The ERJ-14NF6191U meets all critical electrical specifications: identical 6.19 kOhms resistance, ±1% tolerance, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Physical dimensions are functionally compatible within standard PCB assembly tolerances. The higher 0.5W power rating does not create compatibility issues.

Q: What does "Not For New Designs" mean for the ERJ-14NF6191U?

A: This designation indicates that Panasonic recommends against using this part in new product development. However, it remains a valid substitute for existing designs and replacement applications. The part continues to be manufactured and is available in inventory (20,857 units).

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist: the ERJ-14NF6191U is 0.002" narrower (2.50mm vs 2.55mm) and 0.002" taller (0.70mm vs 0.66mm). These differences are within standard PCB assembly tolerances and do not affect electrical performance or thermal behavior.

Q: Must the substitute part have AEC-Q200 certification?

A: No. AEC-Q200 certification is an enhancement provided by the ERJ-14NF6191U but is not required for substitution. The primary component (RC3225F6191CS) does not carry this certification, and applications not requiring automotive qualification are unaffected by its presence or absence in the substitute.

Q: Can I use a higher power-rated resistor as a substitute?

A: Yes. The 0.5W rating of the ERJ-14NF6191U exceeds the 0.333W requirement of the RC3225F6191CS. Higher power ratings provide additional thermal margin and do not compromise circuit performance. The substitute will operate safely in applications designed for the lower-rated component.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RC3225F6191CS and ERJ-14NF6191U are ROHS3 compliant, meeting current regulatory requirements for hazardous substance restrictions.

Q: What is the significance of MSL 1 rating?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life and no special moisture control requirements during storage or handling. Both components carry this rating, eliminating moisture-related constraints for substitution.