RC3225F6651CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F6651CS is a 6.65 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) 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 alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

RC3225F6651CS

Samsung Electro-MechanicsIn Stock: 828RC3225F6651CS Datasheet

Current PartRFQ

RMCF1210FT6K65

Stackpole Electronics IncIn Stock: 8731RMCF1210FT6K65 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F6651CS is determined by strict adherence to the following criteria:

Critical Matching Parameters (Non-Negotiable):

• Resistance value: 6.65 kOhms
• Tolerance: ±1%
• Package: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Terminations: 2
• RoHS3 Compliance

Allowable Variation Parameters:

• Power Rating: Substitute parts may exceed the 0.333W specification (higher power ratings are acceptable as they provide equal or greater capability)
• Packaging Format: Original packaging (bulk) may differ from substitute packaging (Tape & Reel) without affecting electrical or mechanical compatibility
• Specific Features: Automotive qualifications (AEC-Q200) represent additional certifications and do not preclude substitution

The RMCF1210FT6K65 from Stackpole Electronics Inc qualifies as a direct substitute based on matching all critical parameters while providing enhanced power rating (0.5W vs. 0.333W) and automotive-grade qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RC3225F6651CS): Select the Samsung Electro-Mechanics RC3225F6651CS when the original specification is required, moisture-resistant thick film composition is mandated, or existing inventory and supply agreements are in place. This component maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute Selection (RMCF1210FT6K65): The Stackpole Electronics Inc RMCF1210FT6K65 is electrically and mechanically equivalent with the following distinctions:

• Enhanced power rating (0.5W vs. 0.333W) provides thermal margin in applications approaching the original specification limit
• AEC-Q200 automotive qualification certifies suitability for automotive-grade applications
• Tape & Reel packaging format supports automated assembly processes
• Identical RoHS3 compliance and unlimited moisture sensitivity rating
• Negligible dimensional variations (width and height) remain within standard PCB layout tolerances

Both components satisfy identical compliance requirements (RoHS3, REACH Unaffected, EAR99 classification) and environmental specifications (MSL 1, -55°C to 155°C operating range).

Frequently Asked Questions (FAQ)

Q: Can RMCF1210FT6K65 replace RC3225F6651CS in all applications?

A: Yes. The RMCF1210FT6K65 meets or exceeds all electrical and mechanical specifications of the RC3225F6651CS. The higher power rating (0.5W vs. 0.333W) is compatible with applications designed for the original component. Dimensional variations are negligible and do not affect PCB layout or assembly.

Q: What is the significance of the higher power rating on the substitute part?

A: The 0.5W rating on the RMCF1210FT6K65 indicates greater thermal dissipation capability than the 0.333W original specification. This represents a design enhancement and does not create incompatibility. Applications operating within the original 0.333W specification will function identically with the higher-rated substitute.

Q: Are there differences in package dimensions that affect PCB design?

A: Dimensional differences are minimal. Length matches exactly (0.126" / 3.20mm). Width varies by 0.002" (0.05mm) and height by 0.002" (0.04mm). These variations fall within standard PCB layout tolerances and do not require design modification.

Q: Does AEC-Q200 qualification on the substitute part affect compatibility?

A: No. AEC-Q200 is an additional automotive qualification on the Stackpole component. It represents enhanced testing and reliability verification but does not alter electrical or mechanical compatibility. Components with automotive qualification are suitable for both automotive and general industrial applications.

Q: What packaging format differences exist between these parts?

A: The RC3225F6651CS is supplied in bulk packaging format. The RMCF1210FT6K65 is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and does not affect component performance or electrical characteristics.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RC3225F6651CS and RMCF1210FT6K65 are ROHS3 Compliant with REACH Unaffected status and EAR99 classification. Compliance certifications are identical.

Q: What is the moisture sensitivity rating, and why is it important?

A: Both components carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture absorption concerns. This eliminates moisture-related handling restrictions and simplifies inventory management.