RC3225F155CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F155CS is a 1.5 MOhms ±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 and is ROHS3 compliant with MSL 1 rating.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternative manufacturers while maintaining electrical and mechanical compatibility within specified tolerances.

Substiute Parts

RC3225F155CS

Samsung Electro-MechanicsIn Stock: 975RC3225F155CS Datasheet

Current PartRFQ

RMCF1210FT1M50

Stackpole Electronics IncIn Stock: 1152RMCF1210FT1M50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F155CS is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 1.5 MOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C to 155°C (minimum requirement)
• Number of Terminations: 2 (exact match required)

Allowable Variation Parameters:

• Power Rating: Substitute parts may exceed the 0.333W specification, provided the higher power rating does not introduce incompatibility with circuit design constraints
• Physical Dimensions: Minor variations within the 1210 package specification are acceptable
• Compliance Certifications: Additional certifications (such as AEC-Q200) do not disqualify a substitute part

The RMCF1210FT1M50 from Stackpole Electronics Inc qualifies as a direct substitute based on matching all mandatory parameters while providing an elevated power rating of 0.5W (1/2W).

Parameter Comparison

Engineering Selection Recommendations

RC3225F155CS (Samsung Electro-Mechanics) is the primary component specification. Selection of this part is appropriate when:

• Original equipment manufacturer (OEM) specifications explicitly require Samsung Electro-Mechanics sourcing
• Moisture-resistant construction is the specified feature requirement
• Standard industrial applications require ROHS3 compliance with MSL 1 rating
• Power dissipation does not exceed 0.333W under maximum operating conditions

RMCF1210FT1M50 (Stackpole Electronics Inc) is a qualified substitute when:

• RC3225F155CS availability is constrained or discontinued
• Circuit design permits power dissipation up to 0.5W without thermal or reliability concerns
• Automotive-grade AEC-Q200 qualification provides additional quality assurance for mission-critical applications
• ROHS3 compliance and MSL 1 rating satisfy regulatory and environmental requirements
• Physical dimensions (length, width, height) are compatible with PCB layout constraints

Both parts are Active products with equivalent electrical performance in the specified resistance, tolerance, and temperature coefficient parameters. Selection between these parts is determined by supply availability and application-specific power dissipation requirements.

Frequently Asked Questions (FAQ)

Q: Can RMCF1210FT1M50 be used as a direct replacement for RC3225F155CS in all applications?

A: The RMCF1210FT1M50 is electrically and mechanically compatible with RC3225F155CS for applications where power dissipation does not exceed 0.5W. The substitute part's higher power rating (0.5W vs. 0.333W) does not create incompatibility. Physical dimensions are within acceptable tolerance for 1210 package specifications. Verify circuit design permits the substitute part's AEC-Q200 automotive qualification if this certification is not required.

Q: What are the critical parameters that must match between the main part and substitute?

A: Resistance value (1.5 MOhms), tolerance (±1%), package format (1210 / 3225 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and number of terminations (2) must be identical. Power rating may exceed the original specification. Additional certifications do not disqualify a substitute part.

Q: Are there dimensional differences between RC3225F155CS and RMCF1210FT1M50?

A: Both parts conform to the 1210 (3225 Metric) package standard. Length is identical at 0.126" (3.20mm). Width varies slightly: RC3225F155CS is 0.100" (2.55mm) while RMCF1210FT1M50 is 0.098" (2.50mm). Height seated maximum is 0.026" (0.66mm) for RC3225F155CS and 0.028" (0.70mm) for RMCF1210FT1M50. These variations are within standard 1210 package tolerances and do not affect PCB placement or circuit performance.

Q: What is the significance of the AEC-Q200 rating on the RMCF1210FT1M50?

A: AEC-Q200 is an automotive industry qualification standard indicating the component meets stringent reliability and quality requirements for automotive applications. This certification does not affect electrical or mechanical compatibility with non-automotive applications. Parts with AEC-Q200 qualification are suitable for both automotive and general industrial use.

Q: Can the substitute part handle higher power dissipation than the original?

A: Yes. The RMCF1210FT1M50 is rated for 0.5W (1/2W) compared to the RC3225F155CS rating of 0.333W (1/3W). The substitute part can safely dissipate up to 0.5W. Circuit design must ensure actual power dissipation does not exceed the substitute part's rating. Higher power rating does not create reverse compatibility issues if the original application requires only 0.333W or less.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RC3225F155CS and RMCF1210FT1M50 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level. Both parts are suitable for applications requiring RoHS compliance and do not require special moisture handling or storage procedures.